How many people on average hitting 750+ and is the vmod hard?
Perkam
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How many people on average hitting 750+ and is the vmod hard?
Perkam
I'm still getting black screens. I'm going to try a few more things, but do you have any advice?Quote:
Originally Posted by Oese
lower the clock or hard mod for more volts
it's not stable
@ perkam: 750+ is easy with a voltmod and decent cooling. But a good air or water cooler is a must.. pencilmod is as easy or difficult as with 3870..
@ jason: black screens are gone here since i figured out leaving the last voltage setting blank (it will get that voltage from the other fields...) but it throws those stripey gray screens and sometimes freezes.. strange.. hope for rbe new version :yepp:
Ummm...I am hard-modded. See sig. I don't see why CAT 8.8 would require more volts to be stable at the same speed as opposed to CAT 8.7. It seems more like a powerplay issue. I can get to Windows, but if I try to open GPU-Z for instance I get either a black screen, no monitor input, a blue screen (not BSOD), a blue screen w/ vertical stripes, or a white screen...strange. I also noticed 1 red light come on on the 4850 after it blanked out.Quote:
Originally Posted by Slovnaft
I've been testing CAT8.8 on XP-32, but I run a dual-boot, and can still get into VISTA-64 w/ CAT8.7 w/o any issues. Also, restoring XP-32 back to CAT8.7 works fine as well. 8.8 works fine in XP w/ stock BIOS.
I used your template. Only thing I changed was the max clocks. I'm running 820/1200 w/ 1.35v/2.10v. So, I guess I'll have to stick w/ CAT8.7 until someone figures this out. Lowering my clocks is not an effective solution unless 8.8 can give some serious clock-for-clock improvements.Quote:
Originally Posted by Oese
Did you change any other settings in RBE? What settings are you using on the 'Additional Features' tab? I also tried to change the 'One-click update' and the 'Also decreases voltage' checkbox, but that didn't do anything for stability.
And does anyone know if the 'Also decreases voltage' checkbox will allow us to set the 2D voltage lower than before? Since my hard-mod increases all voltages I'd like to set 2D even lower, so idle temps/power consumption can be as low as possible when running 250/500 or 500/750.
i got problems with my template too. tried again today morning.. it works basically, but i also get those stripey screens now and then, lock-ups and the red led lighting on the card. i found that v gpu reads 0 if the screen goes black, and below 800mV if those stripey screens occur.
I as well think that its some interference with driver-side powerplay profiles that get mixed up.. for me, i would only need lower voltages in bios and the opportunity to overclock via ccc. then i'll apply pencil and lower voltages in bios and overclock with ccc. until thats possible, i'll go with amd gpu tool i think.. or, lowered voltages in bios + pencil and ATT, with which i can possibly then use higher voltage and higher clocks.. will try that out..
the decrease voltages is meant for 4870 i think as 1.201v is actually more then 4850 stock vgpu.. that led to blackscreens here as well..
RBE v1.14 is available now!
Here are the new things:
v1.14
- Fixed bug with method one overdrive hack not working. Should run fine now.
- Added fan control for 4870 X2. Completely new controller chip, was a big pain in the ass to code... :-/
- Made spin up fix, powerplay functionality and voltage decrease in the one-click update for 4xx0 cards seperately selectable.
- Fixed WinFlash check sum correction bug.
- Added and fixed a lot of small things. Too many and too minor to mention all... :-)
Please tell me your opinion about everything! :)
I appreciate all your hard work man! :up:Quote:
Originally Posted by BAGZZlash
I haven't tried 1.14 yet as I'm at work. Can you comment on the proper way to set up the clocks/volts? Have a look at Oese's template above, and let me know if that's the correct format. Mine looks just like that except I have 820/1200 set as max clocks. It works fine in CAT8.7 on both XP-32 & Vista-64.
However, CAT8.8 seems to hate my BIOS modifications in both XP-32 and Vista-64. I keep getting blank screens. The stock BIOS works fine in 8.8.
Also, Windows DreamScene causes my clocks to constantly shift from low to med clocks (in CAT8.7). I've got it turned off for now.
Oh, and what does the 'voltage decrease' do? Can I select a lower voltage like 0.8v w/ that?
Thanks!
Jason
:toast:
@ BAGZZlash: wow just in time! Very nice!!! Will report back!!
This was my first pencil mod ever, and if you do the easier of the 2 pencil mods you can hit 750+ EASILY.Quote:
Originally Posted by perkam
It was pretty easy, I just had to shade A LOT for the first one.
yihaa hash method works for my card with 8.8.. only a lil more mhz would be nice ;)
Soo unlocking overdrive still not working?Quote:
Originally Posted by Oese
it is working but only 720mhz..
but perhaps i'll try 4870 hash ;)
mmh i found something that works for me..
http://www.abload.de/thumb/biosfco.jpg
So you had to give up your 250/500 clocks?Quote:
Originally Posted by Oese
And it looks like you didn't set your 3D voltage so it's defaulting to 1.15v instead of 1.2v? Or does some other BIOS edit fix that?
are u using Catalyst 8.8 + Vista64?
http://img170.imageshack.us/img170/341/vantageslc1.jpg
No, but I had the same problem w/ 8.8-Beta on Vista-64.Quote:
Originally Posted by Barr3l Rid3r
What does your template look like?
no, now i'm on 250/500 with 0.85v set in the bios, with pencil this works out as 1v.Quote:
Originally Posted by jason4207
but you just have to set clocks 01 and 02 the same (250/500) and voltage to whatever you need. That seems to work really. But i can't set 3d voltages then it will blank out. all the other fields can be left untouched this way..
really really complicated to test all these things :hitself: dont know if voltage change simply isn't possible above 1,158v or if you have to type a certain number.. just dont know..
@ barrel: yepp, cat 8.8 and vista 64bit..
http://www.abload.de/thumb/bios1kgz.jpg
Can you post your latest template please?Quote:
Originally Posted by Oese
Does 0.84v set in BIOS give you an actual voltage that is less than setting 0.94v in BIOS?
i'm running at the bios settings posted above now, tested a few games and benchies and no problems.. 0.84v gives 1v because of the pencil, 0.94v gives something slightly above 1.1v.. so that works..
don't need to change 3d to a higher value if you can use just more pencil and lower it in 2d... same outcome..
what about 1.20v? it should increase another 0.1v (worked previously here) but it might show missing adapter message.Quote:
Originally Posted by Oese
could give it a try.. did you try it with cat 8.8?
btw, awesome card. just figured out how to play twoworlds with HDR+AA, Drakensang as well.. using bioshock.exe its no problem..
and there the card has its real muscles: HDR, 8xAA, AAA, 16xAF working really really fast... awesome. With the 3870 i had to forget about AA/AF, not to mention AAA. with the 4850, AAA costs virtually nothing, so does AA and AF.. most of the time i run cpu limited :banana:
what voltage are you running for those clocks...very nice BTW :up:Quote:
Originally Posted by Barr3l Rid3r
yeah, 750+ is pretty easy with a volt mod since these cards i have aren't that great and at 1.30v they do this no problem...Quote:
Originally Posted by perkam
as for whether the mod is hard, it isn't too bad as there is an alternate solder point sort of away from everything that anyone should be able to do. i did mine right in the mix but was a bit sloppy. i also had to use two 50K ohm VRs as i had no 100K on hand. makes for a really fine control though which isn't a bad thing, just a little messy looking.Quote:
Originally Posted by 3oh6
http://3oh6.com/forum_posted/reviews...4850_mod-4.jpg
http://3oh6.com/forum_posted/reviews...4850_mod-5.jpg
i would personally go with the alternate spot as it should be much easier with nothing around it :up:
its almost like these cards are build to be volt-modded *g
@ barrel: no luck, black screen with cat 8.8. perhaps one must do all voltage entries from 01 to 06 manually if using anything above stock via bios? i'll try later.
perhaps this will become my first hardmod some day as i really like this card and pencil is a mess. until now i only used pencilmod and bios as this is easily removable but has its disadvantages as well.. also i need a better solding station, my solder iron is thick like a thumb, nicely appropriate to unsolder all components of the whole vgpu area at once *g
So, it looks like you gave up the 'medium' clocks now. I could care less about them anyway, but I'm curious.Quote:
Originally Posted by Oese
Do you think 8.8 has any advantages over 8.7? I'm doing a lot of work trying to get 8.8 to work w/ the BIOS mod...is it worth it? I'm guessing that all new CAT releases may have this problem, so I'm willing to put in the effort to keep my OC w/ future drivers that may help performance.
I also have this small quirk where in GRID on the 24hr races I always see my fps drop from a constant ~60 to a constant ~24 when 9:30 is left on the clock. I usually just finish the race, and then restart the game to fix it. I'm wondering if anyone else has seen this problem, and I was hoping 8.8 or these new BIOS settings would fix it.
I have VR's installed, so it should be easy to re-adjust my voltage. Can we go below 0.84v?
So, even your above template doesn't work w/ Cat 8.8?Quote:
Originally Posted by Oese
Has ATI figured out a way to force us to get 4870 if we want to use updated drivers?
Please update if you figure out how to get 8.8 to work w/ BIOS mod. I'll stick w/ 8.7 until this mess gets sorted out.
lowering clocks and voltages works just fine with cat 8.8 as well as setting 3d-clocks in the bios the way i use it now. i do not know whether < 0.85v is possible but i think so.. i just picked 0.85v to try whether below 0.9v is possible and it is.
dont get me wrong, i did not try everything as i now first wanted a working bios after about 30 flashs in the last week *g. it seems bios/cat8.8 behaves different with the hash-mod via rbe 1.14 then without.
without that hash-mod i was able to uppen voltage via bios if the last voltage field (09) is left blank so it seems, but then downvolting is not possible, except you did that entries in the 07/08 fields (which will lead to those f***ed up gray screens and lock-ups). with that hash-mod it will blank out if a voltage higher then 1.158v is set somewhere so it seems.
hash 4870 does not work on 4850 cards (at least mine)...
and so for the moment i gave up on ccc overclocking and those mid-clocks as i do not really know when they're applied as well as on upping voltages via the bios... i have a few more ideas, will try later..
hehe and dont think the 4870's are better off. they cant neither lower nor uppen the voltages in the bios.. so i think we 4850-users are better off really *g except for the better v-regs and ddr5 on the 4870's of course...
mmh i will test medium clocks again as well.. some games seem to clock down for a millisecond and then some stutter occurs..
OK, so use the last template you posted w/ the hash mod (or w/o) to get 8.8 working? :confused:
http://www.abload.de/thumb/bios1kgz.jpg
Is that working best for you so far?
I don't use CCC to OC...just BIOS.
http://www.abload.de/thumb/bios2ei3.jpg
this one w/o hash mod works best. 2d, low 3d and 3d clocks, at least 2d and 3d work, low 3d will do so as well i think..
0.8v gives me voltage readings that are near about 8.4v setting.. so somewhere there will be a lower borderline..
still no chance for higher 3d voltages.. dont know how that worked before ?????
I'm about to try it.Quote:
Originally Posted by Oese
Just going to stay w/ 8.7 tonight so I can play some GRID, but I'll try 8.8 later or tomorrow.
Thanks!
Edit: On 8.7 I was getting 1.32v idle and 1.30v load! Weird.
I went back to my old BIOS settings and was back at 1.05v idle/1.35v load.
I never tried 8.8, though.
with cat 8.7 i did not have any problems!
1.32v idle/1.30v load is INDEED weird. Perhaps with 0.8 the cat8.7 driver defaults to 1,15v instead of 0.84-0.9v...
With 8.8 it works, but perhaps one should stick with 0.9v as lowest voltage..
I think about using higher low 3d clocks.. 625/1000 with 1.15v real to avoid any powerplay related stutter when clocking down the whole way from 800/1125 to 500/750..
Ive just installed the 8.8's and am also having problems. My xfire cards bios are set to 160/500 idle & 750/1050 load, but now only boot with one card 750/993 and the other 625/993 powerplay doesnt appear to work at all. Also AMD GPU Clock Tool doesn't work. Back to 8.52.2 until its figured out.
best use the same bios for both cards and set voltages and clocks as in the above posted picture.. should work with cat 8.8
I have used the same bios for both cards. ill have a look at your settings.
Well I fixed this problem. I just reduced the setting from 8x MSAA to 4x MSAA. It's pegged at 60fps now (I was getting dips into the 40's before and the annoying 24fps extended drop before) and I can't notice the AA hit at all. This game is so smooth and gorgeous at 60fps 1680x1050 4XMSAA 16xAF Ultra settings!Quote:
Originally Posted by jason4207
I'm stickin' w/ 8.7 until I find out exactly what's going on. I also changed my medium clocks to match my low clocks. I see no reason for the medium clocks at this point. 250/500 is plenty fast for anything except games, and the card likes to switch b/n low and medium a lot when I'm on the desktop.
I've got my settings like this now:
do you really see switching between medium and low clocks on the desktop??
Mine swithces between 2d and 3d everytime I open IE. It really flips out if I try to use windows dreamscene.Quote:
Originally Posted by Oese
is there anybody know where to adjust the 2d settings in ATi 4850? i already tried adjusting almost all the values in RBE but it seems no improvement in 2dbench in pcmark05 :(
thanks in advance :)
For people who are having trouble with modded bios and new drivers Cat 8.7 Cat 8.8. Here my story and possible fix:
My voltmodded (full load 1.35v) HD4850 runs with a modified bios which has 2D set to 160/300 @ 0.89v and has 3D set to 850/1150 @ 1.158v.
With Cat 8.6 i had no problems at all. These bios settings ran fine and were completely stable. Also I didnt have any blinking whatsoever.
Then Cat 8.7 came out. Right after installed those drivers (clean install) I started to have problems. I got blinking when the card was switching from 2d to 3d and got black screens and even lock ups when the card was under full 3d load during games. Reflashing my modified bios didn't work. I even changed it to higher clocks in 2d (500/500) and lower clocks in 3d (800/1100) But I didn't help.
So I reverted back to Cat 8.6 and all ran fine again.:confused:
Then Cat 8.8 beta came out. I hoped that my problem would be solved now, but alas, I experienced the same problems I had with Cat 8.7.
So back to Cat 8.6 it was.
I was beginning to suspect that there had to be something going on with my modified bios (based on the MSI bios) that wasn't working well with Cat 8.7 and 8.8 beta. perhaps it had something to do with PowerPlay in the new drivers
Then I did the following. I turned of my voltmod and I reflashed my card to my old original Asus bios and installed Cat 8.8 beta. All run fine now. Games ran fine and i had no problems, as is to be expected with a fully unmodded card
Then I turned on the voltmod, now the card only gets more juice. Still i had no problems, so I concluded that there was notihning wrong with Cat 8.8 beta and with my voltmod.
Then I redid the bios mod on a fresh copy of the MSI bios with RBE 1.13.
I modded it to the same values I had before (2d 160/300 and 3d 850/1150) flashed, and kept my fingers crossed.
And lo and behold: it runs fine now with Cat 8.8 beta. I get no blinking, black screens or lockups in games
So the trick for me was to install Cat 8.8 with a default unmodded bios in the card, and after the drivers installed then flash a new modded bios (which was modded with RBE 1.13) into the card
I tried to mod my 4850 bios with rbe,i flashed the modded bios ok but it does not seem to have worked.
the first pic is the stock one and the second is what i edited in rbe,the second pic is a from the bios that is on my card now,which i dumped with gpu-z.What have i done wrong? My card seems to be working ok still,but the clocks have not changed.
Funny thing happened to my 4850 as well, similar to your story. But first you should know that:Quote:
Originally Posted by DemonEyez
- I have no voltmods whatsoever, PCB is untouched except for an aftermarket cooler and MEM/VRM heatsinks.
So, I was until a couple days ago with CAT 8.7 and a modded BIOS found here at Xtreme forums made by Factotum. This modded BIOS had manually tweaked voltages both for 2D and 3D clocks (0.968 and 1.158 respectively) and the upper limit for the core was raised to 950. The normal operation clocks were unchanged to let the user do its own OC using CCC.
All was fine except for the fact that I could not go above 710/1100 without crashing on some games (725/1100 was fine with Vantage 'though). I assume this was related with a vGPU too low. Anyway, 710 was just fine for me and my daily gaming purposes.
Yesterday I went and update to CAT 8.8 while keeping the modded BIOS. BAM, blank screen while loading up Vista 64! Since this happened to me before when I upgraded from 8.6 to 8.7 (I was at the time using the 'famous' MSI modded BIOS), I knew this was somehow related with the ATI drivers not recongnizing the new voltage parameters.
Ok then, today I went and flashed the card back to a SAPPHIRE default BIOS (the most recent one I think, version 011.004.000.000.029193) and proceeded to upgrade the drivers to CAT 8.8.
Vista booted fine, I checked if the OC was well between acceptable values (tried the usual 700/1100). All fine, no artifacting and so on.
Ok, so now all that was left to do was to try a modded BIOS based on the SAPPHIRE default, edited with the newest RBE 1.14. To keep track with changes, I just modded the HASH values to method #1 (uper limits to 720 core) and reflashed. No voltage or clock info settings changes for the moment.
Vista 64 booted fine, as I expected, but the funny thing is that, although I haven't changed any of the clock info settings, the 2D clocks are now 500/500 and not 500/750 as I expected them to be.
Any idea on why or how this happened?
Is now safe for me to try and change some of the voltage, specifically in the 2D part?
Is there any way to raise the upper limits for the core a bit more, say 750?
Will these changes be compatible with the CAT 8.8?
Thanks in advance for the help :)
Yep. Just grab the GPU-Z window (Sensor tab) and drag it around real fast. You should see the clocks change...at least I did.Quote:
Originally Posted by Oese
Dreamscene locked my clocks at default 675/1000, and seemed to block any other program from being able to change clocks. *This was w/ a previous BIOS, though. I haven't re-tested w/ the BIOS pic I posted above.
Hey, has anyone tried Gainward's HD4850 Golden Sample BIOS with a reference Sapphire/Powercolor/ASUS/whatever ? Gainward's GS uses Samsung 0.8ns VRAM. Would this be a problem with reference 4850's that use Qimonda?
Interesting read here in the last few days.. i will try installing cat 8.8 drivers with a stock bios and then mod it..
@ tigger: you set the clocks in the wrong place. clock info 03 is your 3d clock you have to set..
@ caped crusader: i saw even 250/500 with cat 8.8 at stock bios with an 250/500 setting NOWHERE in the bios. I suspect cat 8.8 has powerplay profiles built into the driver which will be chosen at first install dependent on the card/bios... something like this...
Yeah, that makes sense... never thought of that. But it's unusual for ATI for add a feature and not publicize it...Quote:
Originally Posted by Oese
Just a question: Does 0.8ns allow you to overclock higher? Or are they just faster...what exactly does this value mean? :PQuote:
Originally Posted by Caped Crusader
It's the speed of the memory in nano seconds. The lower the value the faster the memory can run in Mhz.
Cool, I just ordered one, they only cost 15 bucks more than the cheapest reference 4850 in my country. How much should I be able to overclock my hd 4850 vram to?Quote:
Originally Posted by Draxx
So anyone tried this Gainward bios on reference boards :)
http://www.techpowerup.com/vgabios/2...12.080806.html
This has 700/1100 stock clocks and a limit of 750Mhz/1150Mhz on CCC
Dnt have my PCI card in hand so a bit iffy to try out :P
Yes definately its not a good idea to put a bios made for samsung memory in a reference qimonda card.Quote:
Originally Posted by Caped Crusader
And why is that exactly? Different timings/volatge maybe? (noob question)Quote:
Originally Posted by Barr3l Rid3r
^^Well just tried the gainward Golden Sample bios out now on my Sapphire reference card , and it was giving a few red dots on some parts of the screen after the boot up. Flashed back to the powercolor bios and everything is back to normal. Seems the ram-timings are different :P
Do you guys think the 8-pin pci-e cable for the gainward 4850 golden sample will allow for higher clocks?
the golden sample will clock good especially on the ram i suppose and is an overall nice card. the cooler as well...
i think without watercooling i would consider to buy it.
when you want to apply water i'd choose cheapest card available and mod biosses etc myself.. 8pin connector does not help in oc. the 6pin of an decent psu has enough power. its added just to comply to the pcie specs.. pwm's would be a decision maker, but i dont know about the gs pwm's whether they are different... the pcs+ seems to have different (and supposedly better) pwm's.
@ caped crusader: i think this is also the cause for the problems we have with cat 8.8...
Don't think so... the card already has all the power she can eat, but no harm in trying I suppose...Quote:
Originally Posted by praesto
I still can't seem to get my card to run 1.2V via BIOS mod....I only read 1.8V max while in 3d. I've tried 1.2, 1.21, 1.3, and 1.35 in RBE to no avail.
What voltage are you guys entering in RBE to get 1.2V? I noticed some of you are leaving the voltage blank....is that on hard mods, or what?
Use 1.158 V. This is the max value, that can be set for HD4850. This will give you 1.2 V measured by multimeter.Quote:
Originally Posted by binormalkilla
All right I'll give it a shot. Thanks man. :up:Quote:
Originally Posted by arroyo
0.8ns means you can do 1000/08 = 1250Quote:
Originally Posted by praesto
So with a chip rated at 0.8ns, theoratically you can reach 1250MHz with that chip.
So in theory these Samsung 0.8ns (1250MHz) chips are higher/better rated than those Quimonda 1.0ns (1000MHz) chips, that's theoratical.
In practice we see that the Quimonda chips can do 1200Mhz with slightly higher voltage.
Would be nice if those Samsung chips have the same potential after a voltmod
Can't wait to see the first voltmod and results for those Samsung based cards. Because running the GDDR3 on a HD4850 @ 1300Mhz or even 1400MHz would have a substantial positive effect on the memory bottleneck
The mean difference would be in the subtimings of the ram chips. Is those are to different - and most of the time they are - you'll get screen corruption or end up with a card that will not boot at all!Quote:
Originally Posted by Caped Crusader
hey guys, er, I just flashed my 4850 BIOS and it went a little sour (I used win ati flash...). Anyways, I have a BIOS on a thumb drive and a BIOS on my desktop, but how can I flash one of them back, as I can't boot into windows, I'm not sure how to boot into DOS (man thats embarrassing), and even if I was I'm pretty sure I deleted ATI Flash (the DOS flash utility).
haallp...
@ demoneyez: how much voltage do the quimonda need for 1200? i tried 2.1v and that did not make them any faster.. edit: tried 2.2, again only minor advantages..
btw guys i tried that recipe for v-modded bios and cat 8.8.. uninstalled 8.8, cleaned registry, used driver sweeper newest version, flashed stock bios, rebootet a few times, installed cat 8.8 again, rebooteted few times and then started with modding the 3d-vgpu in the bios. result: 1.158v works fine, but dioes not push the actual measured volts, anything above that will black screen... so no way really here..
used rbe 1.13 for trying that out like it was written here..
Ok I flashed 1.158V today and it looks like it's the same....however I noticed that when I used the middle left ground point I measured 1.21V, and if I used the front ground I ground I got 1.17V....weird.
Well I guess I'm stuck at 750 MHz on the core.....I'm going to test more just to make sure. I don't even think I'm %100 stable at this, as I froze up in Crysis and got a VPU recover once when playing on Very High.....I don't ever get that in COD4 or CSS.
I'll try to shoot for higher memory too.
Do any apps support Crossfire 4850 OCing in Vista x64 yet? I've always just flashed the BIOS.....
I just tested 760 MHz on the core and it was Vantage stable (ran it twice, no looping option on Vantage AFAIK), so I think I'll flash it to 760. I tried 770 but I got an error in the middle of New Calico.
I'm going to test some higher memory clocks later tonight or tomorrow.
i think oc to max 700/1200 will work with the ccc in cf mode.. perhaps 720/1200 with a hash modded bios..
Quimonda like lower voltages, 2.2v is way to high.Quote:
Originally Posted by Oese
Try to get 2.075v on the spot and you might get lucky :) More users have reported this as a sweet spot, and it work for me too
I can do 1225 MHz with 2.075v but after 45 minutes of AtiTool I get slight artifacts. 1200MHz is completly stable :)
awesome, will try that... never tried anything between 2.1 and stock.. will do right NOW ;)
mmh did not make 2.075v, but 2.08, 2.055, 2.045, 2.035, 2.025 and 2.015v. so far it worked best at 2.045v getting 1175mhz near atitool stable 1200mhz only minor artifacting, but both not stable. 2.055v was worse as was 2.08v. but big improvement whatever, before 1150 was heavily artifacting, now stable... but i stay at 1125 for so long, 1150 does not make a difference and 1175 and 1200 (i wanted) are not stable... but perhaps i'll try some precise pencilling again tomorrow ;)
but it could be heat related too. i dont have full watercooling, only gpu, and some alu heatsinks on rams and pwm with kinda thick pads.. will change those perhaps, at least on the pwm..
I've received my gainward 4850 golden sample. As we all know, how things work in reality and how things work in theory rarely go 100% hand in hand :P, and it's the same with my gainward 4850 which supposedly has samsung 0.8 ram specced to run at 1200mhz or even more. My 4850 shows artifacts even at 1175mhz...I was really expecting more :(
perhaps some more volts...
So whats the difference in setting 1.158v in CCC Overdrive profile (which it sets itself after an autotune) and 1.158v BIOS voltage?
I was able to hit 1225 on ram with 2.15v but only after adding active cooling (40mm fan) over the v-regs. I'm going to mount a 120mm fan to the card to blow over the ram chips see if that helps..maybe pump more voltage though it.
I will try to play around with lowered voltages see if that helps, just like my old 8800Gt with Quimonda chips, which ended up running higher clocks stable on lower voltages.
EDIT: Ok after going back to check on Furmark, 1225 started to artifact after 37 min....so yeah, I spoke too soon, she's not stable. Back to the drawing board.
Heres my highest with the bios modded to 1.158v
http://img.techpowerup.org/080906/750_1150046.jpg
RBE v1.15 is ready for download!
That's the changes:
v1.15
- Fixed bug causing an error message on loading several BIOSes (small ones like several 3870 X2 BIOSes).
- Added remote control feature for WinFlash to acquire and flash BIOSes from within RBE. Will be included in the tutorial soon.
- Superior PowerPlay should be available for more 4870 BIOSes now.
- Added link to the tutorial in the menu bar. (Info... Tutorial on how to use RBE (websource)...)
- Added display for the card's internal voltage table (it's in the clock settings tab).
- Fixed a bug causing the device ID being written incorrectly if it's changed in rare cases. Coded this very drunk, there might be bugs... :-/
- Added some nice method one hack signatures (4850, 4870 X2).
- Added a feature for method one overdrive hack signature saving and loading.
Have fun using it and please be sure to make extensive use of the signatures exchanging thread!
can someone upload a Diamond 4850 bios? i have maxed out at 721CORE and 1130MEM on stock voltages with thermaltake dualorb cooler using rivatuner.
Has anyone had any luck getting a modded BIOS working w/ newer CAT releases? I can download 8.10 now, but I'll stick w/ 8.7 if its the only way to keep my low 2D voltage/clocks, and high 3D voltage/clocks.
Hey all,
So.. i been following this thred since day 1, had a couple 4870's they were nice.. and just had to try the 4850's.. im lovin em!! after abit of screwing around with bios's.. and alot of thanks to all yall for the info in this thred.. thought id throw up a pic of the improvement that can be gained out of these card.. so Cysis Bench.. only DX9 sori..(XP on this bench disk). but the numbers.. from stock 625/993 at std volts all round.. to 851/1150 @ 1.34/2.11 respectively. just gota love this "cheep" solution to a 4870.. :D
http://img90.imageshack.us/img90/2286/bench1cwo3.jpg
Using 8.10 here and works fine.Quote:
Originally Posted by jason4207
Please post your commentsQuote:
Originally Posted by Barr3l Rid3r
Cool! :DQuote:
Originally Posted by Barr3l Rid3r
I'll try it tonight, or whenever I have time.
Thanks!
Edit: Which version of RBE did you use to create that. I'll probably want to play w/ the 3D clocks a little, and I want to use the same version of RBE if it makes any difference.
1.15Quote:
Originally Posted by jason4207
Is there any way to go beyond the 800mhz limit on CCC?
I'm having difficulty getting the drivers to install correctly. The 1 time that CCC actually installed I got a black screen once Windows loaded. The only thing I changed from your BIOS was the 3D clocks to 800/1150. I've been running 800/1150 on my 4850 w/ 8.7 for a while now w/o issues.Quote:
Originally Posted by Barr3l Rid3r
I think I borked up my Windows install trying to clean up the registry. I'll try a restore, and see if that helps. I plan on re-installing everything anyway on my Velociraptor, but I want to know if 8.10 will work before I do that so I don't mess up my clean install w/ multiple driver uninstalls/re-installs.
I haven't been able to get any drivers besides 8.7's to work with multiple monitors. Non of the later releases work with both monitors plugged in, or monitor + LCD TV.:down: Looks like you might be having the same issue.Quote:
Originally Posted by jason4207
I've got 8.10 running on a fresh xp-32 sp3 install now w/ Barr3l Rid3r's BIOS. At first I tried modding the 3D clocks slightly to 800/1150, but that didn't seem to want to work right. I tried all kinds of things like using the stock BIOS to install 8.10, and then switching it, but nothing worked. I even went through the trouble of imaging my fresh install right before I installed the drivers, so that it would always be a fresh install. In the end I ended up using Barr3l's BIOS untouched, and just using CCC to OC to 800/1150 (which is where I want to be anyway), and it finally worked.
Now I have to wonder if it was just b/c of the 2 displays being hooked up. I did unplug my projector, but I didn't realize that may have fit into the equation. Too bad it took me over 6 hours to get it working. :down:
sweet man, I`m glad to see that it works fine for uQuote:
Originally Posted by jason4207
I think i know whas's going on.Quote:
Originally Posted by jason4207
With your own modified bios, big chance you typed in those voltages at the time , right?
With Cat 8.8 and higher you have to be right on the spot with those voltages, meaning you must use values according to ATi's voltage table.
If you deviate from this, the driver will error because the exact voltage has not been set. This was not a problem pre cat 8.8,
If the value you put in in deviated, it would just take the nearest correct value.
Now with the newest RBE you can't type those voltages anymore but you choose them from a dropdown list, assuring the user that the right one is used.
Just reopen or remodify your bios with the newest RBE and set the correct voltage and the problem should be solved :)
Oh and one other thing. I just read on Techpowerup that the only way to install Cat 8.8 is to install using a NON-modified bios. After the install you can flash again. Seems te be a known issue. I support it, because at the time 8.8 came out this was exactly the way I got 8.8 installed ;)
I got the exact same problem as you. For me to use my Sony LCD TV, I have to physically switch cables with the primary port which normally connects to my Samsung Syncmaster 205BWQuote:
Originally Posted by Mysterfix
If the two are connected at the same time, although the TV is off (or the Samsmung) , I get black screens , freezes, even reboots... this is sooo annoying. What the deal Ati?
Yeah, once I opened the RBE 1.15 I saw the drop-down boxes, and thought that was related to the issues I was having previously trying to get 8.8 installed.Quote:
Originally Posted by DemonEyez
This time, though, I started w/ Barr3l Rid3r's BIOS, and just used RBE 1.15 to adjust the 3D clocks to 800/1150...didn't touch voltages. I couldn't get this to work, though. I think it was b/c I had 2 display devices hooked up, but at the same time I also tried Barr3l Rid3r's BIOS untouched, so I wasn't sure what did it. I'll be keeping 1 display hooked up until ATI works out this issue.
Everything is good now using BR's BIOS, and I just used CCC to get to 800/1150.
Quick question: I noticed there was 1 lower 2D voltage setting available. Does this work? I wouldn't mind having my card sip a little less juice while I'm on the desktop.
Quote:
Originally Posted by jason4207
I already lowered that about 2 notchs less then default setting and 2D clocks
also, I haven`t setted it lower regarding the stability, just leave as it cause is less then 1.00V while in 2D mode.
But I'm hard-modded, so I'm at 1.05v at idle-2D. Does setting it at the lowest setting affect the driver in a bad way?Quote:
Originally Posted by Barr3l Rid3r
same here, if i install cats > 8.7 i can't get into windows (before login screen the monitors loses signal). haven't got a second screen but svideo is connected to my TV so that may be it. this is ridiculous, farcry 2 keeps moaning about old drivers.Quote:
Originally Posted by DemonEyez
some1 tried cat 8.11 already??
there is just one lower setting avaible, that should drive u around 1.00v. I wouldn`t waste my time on itQuote:
Originally Posted by jason4207
does anyone know which bios works with cat8.11 and with gpu clock at about 750-800?
mine latest does... but u must set it w/ CCCQuote:
Originally Posted by raibemunn
what do you think about this voltage @ full load? do you think it's possible?
my 4850 is volt modded & i use 1.4v for vgpu.
i set 0.89v idle & 1.044v full load in RBE together with 800/1150 core & memclock.
i'm wondering if the hardware monitor's detecting the real voltage required to run 800/1150 stable on atitool artifact test and furmark.
or it's only detecting the voltage set in the bios by RBE? i thought 800mhz core required 1.3v and above?
http://img404.imageshack.us/img404/4...voltageqv0.jpg
it read the bios values, should be the same as real w/out voltmod, here it shows 0.94/1.16V for Real voltage of (1.03V/1.32V)
8.12 BETA RC3 confirmed to work !! Benched a few days now. and WOW I think we have finally unlocked the way to utilize all those 800 shader engines !!! This is on Barr3lRid3rs BIOS , which again ty for many of us , its superb . GJ
wher did u get it from?Quote:
Originally Posted by d.j.s.
Its been avail on Saphire site and also some other sources for a few ;)Quote:
Originally Posted by Barr3l Rid3r
As always please do the uninstall util included in the ATI folder from the latest 8.11 hotfix before you install the 8.12 RC3 .
This holiday season will see some amazing benches on these 4850's with the new drivers .
Keep up all the great work guys . Lets see some benches !! game benches too.
Oh here ya go http://www.xtremesystems.org/forums/...d.php?t=210516
Hi guys,
Has anyone managed to get Crossfire working with their 4850's with modded BIOSes in Vista 32 or 64, seems like I can only use a non modded BIOS with upper limits set at 735, if I use my moddded BIOS to 800 I crossfire wont enable and I get BSOD at windows startup, i have tried all the fixes for this by disabling ATi's external event utility etc etc but nothing with a modded BIOS.....any idea's?
Mine works fine for crossfire in Vista 64 but dual monitor support is a different story. Try using cat 8.7 as that was the last driver that worked with the unlocked CCC upper limit.
I've been overclocking my HD4850's but now reached the 800 MHz limit with the hash method 1 in RBE. I have the feeling my cards can go a little higher, maybe up to around 850 if I'm lucky. But I have no idea how to unlock that limit. This is on cat 8.12 and a Club3D HD4850. I could change it with RBE but RBE has a big red warning all over that no hash change so I am kind of weary about changing that.
I was kind of wondering the same, has anyone got any experiece with using method 2 to hack the bios limits and still being able to use the latest catalyst drivers (9.1 atm)? From what I can gather, most people either stick with catalyst 8.7 when the bios got hacked without the correct hash, or stick with the Asus top version which allows limits of 800 (gpu) and 1300 (mem), while keeping its functionality in the later catalysts.
Can anyone comment on this? Thanks in advance! :up: