How come you're only running pci-e 8x?
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How come you're only running pci-e 8x?
Asus P5Q3 Deluxe
Expansion slots 3x PCI-Express x16 (1x16 or 2x8)
So in crossfire he can only do 8x on that mobo.
http://www.nordichardware.com/Articl...&skrivelse=534
As for artifacts guys it could be driver related as i remember when i had x X1900's in CF on default drivers when they first released them. I would get artifacts at default on 3d mark 03 and 06, but 05 was OK.
I like usuing 03 for testing OC's of cards and my PC for game stability. As for overclocking my RIG i run Orthos for at least 18 hrs without issues or at times 24 hours. I break in the system with orthos 3-6 hours at stock for a few days then OC.
As for video cards i just crank em up little at a time and tested with ATI TOOL and 3D Marks and Aquamarks (old i know), but good for frames and such... woot.
So as for some ppl in here no pencil mod was used to get 720-750mhz which is ideal for many users to have such speeds, but we need 100% stability.
Now there is a Leaked 8.7 Driver out there look for it in GOOGLE, try it out ppl let me know as my HIS card won't be in until this Monday (i hoping) its Monday.
Great score, Bakalu! How many volts are you running on that card? Are you using RBE?
Thanks
Which program (also version) specifically should i use to flash the modified BIOS ? I want to be sure it works with HD4850 for sure. Some say certain flash tools have problems...
Latest atiflash works.Quote:
Originally Posted by RejZoR
there was never any evidence that any flash tools have problems flashing, just some people speculating as always .. but yes latest version of atiflash and winflash work great
Thx. Where can i get any info on what each "Clock info" number does?
He is running a single card in the proper slot for x16 operation, hence the question.Quote:
Originally Posted by BeastNotro
I don't get it. I've changed the values to 720 but it still shows only 700. GPU-Z used to check clocks. Also i can't even disable Overdrive now. It just enables itself back when i click ok...
you have to flash back to stock, then disable overdrive.
I went the other way. Removed the Catalyst clean and left Overdrive alone. Works fine now. Stable at 720MHz it appears.
EDIT:
Running sweet at 750MHz. You just simply gotta love these RV770 cores...
Is there info somewhere on how to flash, winflash or otherwise, when both cards are in the system, or is this something only to be done with one card in the system at a time?
use a bootable USB stick or a floppy with atiflash, winflash is garbage
atiflash -p 0 newbios.rom for first card
atiflash -p 1 newbios.rom for second card.
I got my HD 4850 today and popped on my trusty Sytrin VF1 Plus that I've used on 4 cards now. I'm already at 800/1100 with 1.3V via pencil mod and BIOS flash. Scored 15,059 in 3DMark06 with Vista 64 and a Q6600 at 3.52 GHz in my first run without any tweaks. Not bad for $150 and an old HSF. Hopefully I can push this thing to 850 but I won't be too disappointed if I don't get there. Thanks to everyone for the BIOS, apps, posts, and information. You're great as always. Now I need to find stuff to play since I blew through everything but Crysis on my 8800 GT.
No problems here.Quote:
Originally Posted by Rattle
Thanks Rattle. Flashed the first card. Odd, I can see in Everest, CCC, and GPUz that it's running at 160/500, but honestly the card temp has only dropped maybe 2 degrees from when I was running at 500/750 (which my 2nd card is running at) and the fan speed is the same. I did deselect the Enable ATI Overdrive in CCC.
EDIT:Take that back a bit, it was more than 2 degrees, it was about 7 degrees it turns out. Still, I thought there was going to be a bigger difference.
I'm curious, anyone tested the powerusage of stock vs 160/500? I'll have to see where my kill-a-watt has hidden itself.
Windows error.Quote:
Originally Posted by AzN_plyR
Idle Vcore 1.25V.Quote:
Originally Posted by TheScavenger
No, It is sample, ASUS Vietnam gives us.
Winflash garbage, that's a bold statement. I use this program for over three years now, flashed dozens of card and didn't have any problems.Quote:
Originally Posted by Rattle
I agree Winflash is awesome. :yepp:Quote:
Originally Posted by DemonEyez
I have flashed so many times I couldn't begin to count. and it can do both cards with a single reboot.
My 2d/3d does not work... It worked before... Maybe I do something wrong now?
My 2d/3d changes work only with stock/original bios...
When I try to flash with 160/500 in 2d it does not change to that at all, and it does not change to 625/993, it say 500/750 all the time...
I have try to disable overdrive, and enable it... nothing works with my flashed card, only stock/original bios works with changes in 2d/3d...
What can be wrong?
I give u my original bios and my modded one, can someone take a loook?
I Use RBE to do changes.
Original bios
My modded bios
Thanks
http://www.overclex.net/data/images/...cktool-9.8.rar
seems to be a tool to overclock the 4800 series over the limit !!!
Can someone try that tool to see if it works? 100%
It does there is a thread in Video Cards about it.
nice find...Quote:
Originally Posted by XMoA
work my 4870 :up:
thanks...:clap:
jimmyz
I read other thread only a couple posts in it and it appears this program overrides the CCC file mod for the FAN, so what do ppl suggest.. FLASH bios ... ??? then use this program .... ???
Here is the thread you were talking about in Video Cards.
http://www.xtremesystems.org/forums/...d.php?t=193910
EDIT:
Just to add, does this program adjust the voltages properly???
Well seeing one of my cards did not work well at 720 to 1.263Vgpu, I put the 2 to 700mhz wiht 1.263Vgpu, and work perfectly, without making vmode, which is the maximum voltage from the bios for this hd4850 ?
And thank you very much again from Barcelona.
This is my score whit the crossfire in 3Dmark06 :
http://img374.imageshack.us/img374/3...fireqb1.th.jpg
1.263vgpu results in only 1.2v actual.
Actually I am working on a fix right now....not me but a friend. but yes for now that should work fine.Quote:
Originally Posted by BeastNotro
Great to hear someone is working on the FAN fix for this new program update. I assume if it is overclocking properly that it increases the voltages correctly. The only thing is the FAN override issue and i hope you guys can fix it, if not then we have to use RBE to adjust fan and the 2D speeds, then Flash Bios, then Overclock with this AMDGPUTOOL.
Now if it is doing the voltages correctly that means i or many others don't have to do any pencil mod or voltage mods.
Nothing besides a hard mod will raise the voltages. software will max out at around 1.25v tops. to get more either a pencil or hard mod will be needed. this software doesn't raise voltage.
Nice to hear things are progressing nicely, I've read this WHOLE thread, and I'm read to go to shop, buy me one 4850, mount my S1 on it, and than do some modding and clocking :)
I don't even mind this tool negating fan fix mod, since I'll be having 120mm fan on Accelero, so all I'll need is some luck ;) And later on, perhaps a pencil mod for going over 1.2V if things won't be fast enough in games :)
I have to say a big THANKS to all of you that helped around clocking :)
EDIT: LOL! My first post! :D After a LOT of time lurking in here :D ;)
:welcome: Welcome and enjoy the Forum. I hope you enjoy your card and keep us posted.:up:Quote:
Originally Posted by LuxZg
Thanks for the welcome :) I'll sure keep enjoying the forum, like I did last few years, but I promise to contribute as well ;) I'll be posting results of 4850 OC as soon as I get the card, I think it will be before end of the week, just in time for next weekend overclocking-frenzy :up:Quote:
Originally Posted by jimmyz
Well I'm currently enjoying 830mhz core with 1329mV real. I was at 1283mV @ 800mhz and 720mhz with 1185mV(using bios mod only). It seems mine isnt a great clocker since its taking increasing volts to get small increases.
1.33v at 830mhz core is not bad at all.
What voltage you running your memory at? And what resistance did it take? I dont accidentally want to shoot 2.3v through the RAM.Quote:
Originally Posted by gurusan
Thanks.
i am running 2.13v, good for 1175mhz. I forgot the resistance, sorry....i think it's around 3.6ohms or something. Just bring it down a bit because it's sensitive.
Once you install the voltmod, does adjusting the voltages for the bios change the voltage?
eg. would a card with a bios set to 1.08 but voltmoded to 1.4 be bumped to 1.5 if the bios were changed to 1.20.
Guess i am the only one with this problem here. :shrug: I have a powercolor 4850 and i edited my bios using RBE. Clock and fans setting were fine, but then i tried to edit my voltage values from the default -- to 1.200 or 1.210 and now everytime i went to windows, my screen goes black, the red light in the card lits and the fan goes 100%. This only happens when windows are loading so i guess it happens when the driver is loaded. What could be my problem?
I already tried to uninstall completly, used driver cleaner and then install again but no luck. I am using the 8.7 beta nobody have this kind of problems here right?
One of my failed bios are attached. Thanks!!
the 8.7 beta gave me much weirdness that the hotfix 8.6 did not, i ditched the 8.7. had big issues overclocking and black screens.
I am having issues like you with the 8.7 beta. Just use the 8.6 hotfix instead of 8.7 beta and everything should be fine :)
Uninstall the 8.7 beta and use the Guru3d driver sweeper before installing the 8.6 hotfix driver
I had that exact problem with the 8.7 beta. Even safe mode wouldnt load. So I used system restore via the windows disc. Then used driver sweeper and reinstalled 8.6 hotfix. Luckily this was a new installation and I had forgotten to turn system restore off. Otherwise it would have been a long time reinstalling windows.Quote:
Originally Posted by Ruiz
Actually, there is another way that I experienced myself. Before embracing all this let's-bios-mod-the-4850, I prepared a boot flash drive with an autoexec.bat containing a autoflash command, to revert to original BIOS. That's all it takes to make 8.7 beta to work: the original BIOS.Quote:
Originally Posted by ghost101
An then, it figures that the 8.7 isn't working very well: from what I hear, it's a beta driver for the 4870X2 ONLY.
8.6 works!! Thanks guys! Never thought a driver would do that :confused:
I experienced that today too :| . Black screen, I had to recover my windows boot installation with the CD to get it working again. Powercolor card too, flashed with asus Bios for a while now.
BTW : AMDGPUClock tool is now about and working nicely, no need to flash our cards anymore :D
http://www.overclex.net/data/images/...cktool-9.8.rar Just envoy it
It does not increase voltages any and I "assume" most cards dont do over the limits that ccc gives us in overdrive. That being said it is an alternative for those with much better than average cards.Quote:
Originally Posted by Clemmaster
It increases voltages to the max the BIOS can give, but you still need to use something for the stock FAN speed and this program overrides any XML profile... so basically you need to mod your bios for the stock FAN speed to what you want and also set the 2D speeds in the modded bios as this programs does not do that either. Then flash your bios stock speeds still ... and then use this program to Overclock to a max of maybe 750mhz on the MAX the bios will give on software Volts = around 1.2v is all.
If you want to try any higher OC then you have to pencil mod or resistor mod the card.
just pencil modded my card, had the resistance on the resistor at .85, it is giving me 1.3 volts idle, 1.36 volts load, currently running 860/1150 w/ accelero s1. running stability tests to see if it is stable.
http://shrani.si/f/n/IC/3j53xWYK/rbe.png
Is there any specific trick what to change? I've changed Clock info 3 and 7 and nothing really worked as i expected. Should i change clock info 0 too (especially the voltage part)?
Look at some of the bioses which have been posted and copy them. You need to change 3 and 6-9. Unlock all the states as well. The best you can get is 1.200v.Quote:
Originally Posted by RejZoR
Ok i am still getting a little confused here:
If i want say 750/1100 do i need to do any volt mod either pencil or other wise?
I have Guru's Bios that is 750/1100 downloaded and waiting for my HIS card to arrive i hoping this morning or afternoon.
Now can i just flash the card WITH NO MOD's done at all?
Guru's 750mhz Bios Voltages are set at 0.94 and 1.263 and 1.046.
Now if i just flash what can/could happen, maybe the card won't do 750/1100 and she may not boot???
Now i will be uninstalling my drivers and cleaning them out (before i install card) and then i will be installing the 8.6 hotfix drivers (unless there is newer) once i get card and install it.
So tell what i need to do just to get 750/1100.. thks
hey just wondering, I hear the psu on the 4850 gets really hot, has anyone figured out a good way to keep that cool? The s1 doesn't include any way of cooling it and that's why I'm holding off on it for now
With the S1 and 1 x 120mm fan it will keep it cool enough also use mx2 or artic silver 5, now if you don't have that cooler the stock fan is fine, but you need to flash the bios with a better slope and percentage for the fan speed or do another profile is another option and increase fan speed that way.
So the stock fan is OK, but not OK at stock or Overclocking speeds unless it is Increased one of the ways i just stated or yes aftermarket cooler and fan S1 with a decent 120mm fan and with ramsinks will do the job too.
If you mean the VRMs, just stick a few ramsinks on them and the air from the fan should keep them cool. Just buy some with your S1. Or stick a second fan on your s1 with one directly over the VRMs.Quote:
Originally Posted by AliG
That's what I was thinking, but I know that someone forged a vrm cooler for both the 3870 and 8800gt, I'll see if the 3870's fits. And yes I know how to modify the fan speed, take a look at the post count, I've been here a while and happen to know a few things
Here is a little guide for installing the accelero s1 with the 4850. First i got to say it wasn't easy and the final result is kind of ugly, but it works and i got great results!!
First you take off the default cooler, just take care of the thermal pads because we are going to use it. Now we need to saw our old cooler.. Take all the thermal pads off and you'll see a little bump in the back of the cooler near the voltage regulator area.. That's were we will saw. Here is the result:
http://img152.imageshack.us/img152/2894/p6260148my3.png
http://img152.imageshack.us/img152/2...7f1b7df9dd.jpg
http://img75.imageshack.us/img75/8003/p6260149ql6.png
http://img75.imageshack.us/img75/800...b8c10f178b.jpg
Yep looks like cooper but it's anodized aluminum. Anyway we now have a great heatsink for the voltage regulators so lets install it. I used the thermal pads but i *guess* you can use thermal paste
http://img80.imageshack.us/img80/1848/p6270174uo5.png
http://img80.imageshack.us/img80/184...2a7febba1f.jpg
And install again no secrets here:
http://img80.imageshack.us/img80/6638/p6270159vs1.png
http://img80.imageshack.us/img80/663...d58265baea.jpg
Now is the ugly part... The bundled memory heatsinks just wont fit!!
http://img152.imageshack.us/img152/7895/86768528fx2.png
http://img152.imageshack.us/img152/7...5cf69f1ffd.jpg
So unless you have another set of heatsinks the best you can do is cut a little part of the heatsink or just be a idiot like i did:
http://img75.imageshack.us/img75/3504/p6270183kd2.png
http://img75.imageshack.us/img75/350...afd50d785d.jpg
It fits now and that's what really matters :)
http://img75.imageshack.us/img75/9880/p6270191oj9.png
http://img75.imageshack.us/img75/988...728b8a1262.jpg
Now my results... Best stable overclocks with bios mod to 1.21v
before accelero: 720 core, 75º load with a lot of noise from the card
after accelero: 745 core, 56º load with almost no noise.
I had that problem, I simply moved it over slightly towars the other ramsink. Yes it leaves a bit of the chip exposed, but at least I didnt have to do that.Quote:
Originally Posted by Ruiz
Also your turbo module should be directly over the heatpipes. In fact they are pretty pathetic, they run a bit slow and dont push much air. A 120mm fan works a lot better and if you have a good one it eont make muchnoise.
Why not just get a hacksaw or something like a dremel and trim it down as that is what i would have done.... :)
I put one just above the voltage regulator and the other above the memories... but i guess i'll put then in the middle because i have another 120fan in the front of the card.Quote:
Originally Posted by ghost101
I was in a rush :p: But yes, it was a bad idea. When i realized what i did it was too late.Quote:
Originally Posted by BeastNotro
Well I am at 730/1100 after the pencil modding with 1.26vGPU/2.11vMem.Using the stock cooler ATM with 2 X 120mm extra fans blowing on top of them as well.
Nw in rthdribl the max temnps of the GPU is arnd 80 degrees but there is GPU Temp # 2 which really goes overboard at 90 degrees. Can anyone tell what these GPU temps #1, #2, #3 are for.
A screenshot of what I am talking it about.
http://www.imgx.org/pthumbs/small/9662/4850%20temp.JPG
Also in the stock HSF it seems there is a plastic covering all around with only the core, and the mem chips , VRMs having small gap in the plastic to have contact with the metal area(anodized Al)
Since its covered with plastic isn't it affecting the heat transfer capability and spread out
Here is the pic
http://www.imgx.org/pthumbs/small/9663/stock%20HSF.JPG
Seems the stock HSF is taking too much heat and its affecting the VRMs , ram too much. So which will be a better cooler, the accelero S1 rev2 or the Thermal right Hr 03 GT. These are the only coolers which I can get locally here.
Finally thanks to all for such a helping thread :D
http://www.overclex.net/forum/viewtopic.php?id=1319
New AMDGPUCLOCK 9.8 with thermal controls :yepp:
Nice! Can't wait to give this a shot, no more bios modding! Thanks for the link man.
nice, I think I will do the same, but I won't use my own cooler because I want to be able to keep my warranty (how are they going to know that I changed the cooler if I just change it back?)Quote:
Originally Posted by Ruiz
I agree, I wouldn't saw off original cooler unless there is any other way.Quote:
Originally Posted by AliG
With S1 you get one longer heatsink, used for X800 cards VRMs I think. Looks same like memory ones, but is about the length of 5-6 memory heatsinks combined. I have no access to 4850 for now, but I think it can be sawn in two parts, and should cover whole VRM area on the card. You'll just need something to stick it on with (either Arctic Silver or any paste plus a bit of glue perhaps?). Though that HS has holes, but I doubt they'll match 4850's :/
EDIT: Unless someone has both 4850 and this HS with S1, I can take a measure of HS and holes, and one of you can check if it would fit on 4850, or if maybe even holes match. Will be posting picture/dimensions in a few minutes, just have to get my camera
EDIT2: 9.4cm length x 2cm width, and holes are 8.9 appart;middle part that would lay on VRMs is 9mm wide.
http://www.imagehosting.com/out.php/...030464crop.jpg http://www.imagehosting.com/out.php/...030460crop.jpg
What brand do you have over there?Quote:
Originally Posted by JamesBong420
...is someone have modded a Sapphire HD4850 bios with RBE?
I just tried myself to flash my card:
my setting:
Clock info 1: 300/500 0.99v
Clock info 2: 500/750 1.046v
Clock info 3: 710/1100 1.263v
Clock info 7: 710/1100 1.263v
Clock info 8: 710/1100 1.263v
Clock info 9: 710/1100 1.263v
Work fine!
fleix go to tech power up and grab the newer MSI bios. Then only edit two section which should have the stock clocks 625/993 or something close. Make sure they are the same.
Ive done the pencil mod on my 4850 but over 1.35v im getting random reboots when running Fur bench even as low as 700 on the core. im running a 850w Silverstone Zeus, do you think this extra voltage is pulling too much ? i dont want to buy another psu and find its the same. could it be a setting on my maxumus formual mobo ?
btw cards are water cooled, never going above 45c and i have heatsink on the VRM's and according to GPU-z the dont go over 45c with a fan blowing on them.
What resistor was it and how did you put pencil on it.. like on TOP or the side of it ... as it very tiny to do side..... can you take a PIC for me???Quote:
Originally Posted by Devious
Cant take a pic atm, i tried to do it on top but it very hard to be precise with such a small resister. I have another 4850 and on this one i have used silver paint and got 1.43v, this card reboots at 670 core which makes me belive its either my psu the 4850's can handle such voltage but maybe the 4870 can.
I think its possible that the 150w supply via the pci-e slot and pci-e 6pin isnt enough. 150w for all pci-e 1.1 boards. I think pci-e 2.0 boards can supply 150w via the slot and so theres 225w available.Quote:
Originally Posted by Devious
Think about it this way, at 1.35v compared to stock of 1.15v, the power consumptiion has increased 38% before any clock increase. At 1.4v this is 48%. Say you hit 800mhz for the core, thats a combined increase of 76% and 89% respectively.
At a peak wattage of 109w
http://www.xbitlabs.com/images/video...4850_power.gif
and if we attribute 80% of that to the core. A 76% increase in core power consumption is an increase of 66w. This is a peak wattage of 175w. For the 2nd scenario it would be even higher.
NB the 80% attributation to the core is a pure guess. Also, if the card xbitlabs used has a lower than 1.15v stock voltage, it would be even higher.
Hey Ghost101
Ok now i ran a benchmark 3dmark 06 at 740/1100 and it passed now that i figured out that damn resistor pencil crap.. which it is better to do it on the side of the resistor then on top.
Anyhoo i am at 0.96 idle and 1.22v on load.
My temps max in 3dmark 06 was around 64-69C is what i seen between the tests and i was usuing everest to read it, my idle temp is around 49-54C depends on what i doing.
Of course fan speed was adjusted VIA bios flash and what i setup it up too.
Now i may 750mhz/1100 to see if it passes.
Oh one thing is... i only got about 420 more points in 3dmark 06 from my default stock speeds... why???
Thats not very impressive at all.... i am using the 8.6 hot fix drivers at stock ATI CCC settings ... basically i never tweaked anything, no High Performance or nothing.. just whatever it defaults too.
Whats the rest of your system? 3dmark06 doesnt scale perfectly as you overclock. Use the gpu score in 3dmark vantage. Even that only scales ~80-90% as you overclock.Quote:
Originally Posted by BeastNotro
I have:Quote:
Originally Posted by ghost101
AMD 5000+ Oc'ed to 3.150mhz, Scythe Ninja Heatsink, Artic Silver 5 applied.
2 x 2GB PC2 1000 memory, running at DDR2 800
1 x 160GB sata 2 HD, Seagate.
650w ToughPower PSU.
1 X dvd-rw
1 x floppy
19 inch CRT monitor.
Antec 900 CASE all fans running and side fan added too.
Asus Cheapo (but decent little Mobo) Model: M2A-VM ... not the HDMI model.
sounds good, the mounting holes are about 5 cm apart, but I can probably get a 4850 cooler no problem since anyone that has gone with water won't need their coolerQuote:
Originally Posted by LuxZg
Quote:
Originally Posted by ghost101
Thanks, its a shame there are no pci-e 2.0 boards with 2 x16 slots yet. And probably explains why the 4870 has 2 x 6pin.
There are people running over 1.3v successfully on these cards though, unless they havent tried fur bench.
X38/X48 are 2*16x pci-e 2.0Quote:
Originally Posted by Devious
btw flashed with 1.263v bios (giving 1.2v) and went from stock 670mhz to 740mhz core. 1075 mem. seems alright.
of course yeah, sorry i wrote that just after crawling out of bed.Quote:
Originally Posted by biohead
So it cant be the supplied power from the slot, it must be down to having only 1 x pci-e connector ??
1.2v only gets me around 690core, it will run some games but artifacts in fur bench.
1 pcie power connector can supply loads of power. it's the VRMs that get crazy hot. i always scratch the back of my head when people talk about a 75W max from the pcie connector, when not so long ago everyone was obsessed with how many amps their 12V line had. a pcie connector delivering 10 amps means it's supplying 120 watts to the card, it's that simple.Quote:
Originally Posted by Devious
My vrm's have heatsinks on with a fan blowing on and dont go above 45c. My friend has a 4870 and runs all day at 790/1100 with vrms at 85c +
thats why i put it down to the extra 6 pin
well parallel power supply adds voltage stabillity. but 690/790 for 4850/4870 respectively isn't much of a strain to the VRMs. could be just a weaker core. start comparing VRM quality at 900+ mhz with 1.4+ volts. just my :2cents:Quote:
Originally Posted by Devious
btw my 740 core is only put to the test with crysis bench 5 loops 1680x1050 high. but i've found it crashes in the 3rd loop when it's unstable (750). probably due to rising temperatures. gonna test 750 with some better cooling (TR SI-128).
[edit] ok ran furmark 1680x1050 8xAA 16xAF for about 15 minutes, it's stable and artifact free. max 73°C load with stock cooler (editted automatic fan speed slope in bios).
update on my testing at 855/1150 is perfectly stable running rthdribl for several hours at 1.36v under load without artifacts. only 1.1v idle due to the 160/500 setting. temps around 50c load.
3dmark06 14127 (no artifacts)
sm2.0 5969
hdr/sm3.0 7173
cpu score 3150 (e6300 at 3.55)
probably going to run some tests w/ crysis bench. also might pencil mod the memory to see if i can get 1200 stable.
So far I'm doing 905MHz core, 1100MHz memory on a HD4850 with 1.55vgpu under an Arctic Cooling S1 with a ~110cfm fan strapped to the heatsink. No heatsinks on the pwm, chokes, or memory modules. Suspect once I sink the mosfets and chokes and put this under dry ice that 1.55vgpu will yield 980-1000MHz. Mosfets get pretty hot, around 65C according to my k-type probe.
ok in RBE excuse me for im a noob with this tool.
I want to change v from 1.263 a bit higher, not to much since this card is on air. What values do i need to edit out of Clock Info 0-9?
fur benchmark crashes with anything over 825mhz core with 1070mhz memory..anything over 1070 with even a lower cor elike 750mhz crashes..so i found peak overclock on stock voltage. I dont have enough experience with pot's to really want to mess with that, besides its only air cooled
what is good voltage to bump up to maybe get me to 850 core
nice results, but 1.55v on just air seems a bit high to me, be careful :)Quote:
Originally Posted by [XC] gomeler
Cards will be on air for another hour then dry ice tubes :DQuote:
Originally Posted by Achill3uS
would 1.35Vgpu get me @ 850mhz core? this is my goal for 850 core maybe a tad higher.
just dont want to burn my card out, plan to keep this baby for a while
With 1.45vgpu I managed 885MHz on my good card, so maybe 1.4v for 850MHz? My garbage card needs 1.55v for 885MHz so it's a tossup :shrug:Quote:
Originally Posted by strange|ife
what values need be changed in RBE for voltage. I see 0-9 for all the clock settings with vgpu. But kinda of confused on which need changing
thanks
I used a template of Gurusan's BIOS, and I'm running on water, so things seem to be ok. However, while I can get through 3DMark ok, when I try and run Crysis or Jericho, I crash hard.
Wonder if anyone has seen similar behavior. I'm using the hotfix 8.6 Cat.
Not sure what the issue is actually. Running 720/1100, seems stable. Although, when I ran 1100 after overdrive set up the mem, I could not complete 3Dmark. 1 of my cards made all the way to 1200 mem, the other to 1140. Maybe I have a lame card in the mem department. Not sure if mem speed does anything anyway other than make us happy :rofl:
3,6,7,8,9Quote:
Originally Posted by strange|ife
sorry if you stated this somewhere earlier, but you do have a volt mod correct? you aren't just changing the values in the bios and hoping for 1.36 volts through just editing the bios?Quote:
Originally Posted by strange|ife
1.36 volts load got me 855/1150 stable.
hey can you test how much voltage you need for 750 and 800 core? Thanks, I know every card is different, but I'd like a general idea
1.3v should do it, just give it a go and test it. you might need more than 1.3 or maybe a little under 1.3, no way to find out on your card until you do it yourself.Quote:
Originally Posted by AliG
I tested overcloking 4850 in 3DMark06, voltmod, cooling with Accelero S1
625/2000 (default): 12 745
800/2200: 14 238
800/2400: 14 608
825/2400: 15 375
830/2400: 15 033
840/2450: 15 401
850/2000: 14 057
as seen after 825 MHz for GPU performance has ceased to grow, even more at 830 MHz on the core see failure. I repeated the tests with 825 MHz and 830 MHz - the differences were within the limits of errors
I think in DX10 frequency dependence productivity of GPU / GDDR will be similar
can i get 800 for core without voltmod, only from bios?
how much is the maximum core without voltmod?
my card is HIS 4850
without voltmod ur probably looking at around 720-750ish with good coolingQuote:
Originally Posted by barong
voltmod with pencil, can anyone teach me how to use DMM, sorry if its OOT
currently testing 1225 on the memory @ 2.07v, it was unstable at 2.26v and 2.17v, and i couldn't do over 1150 on stock voltage, so i think 2.07 is barely higher than stock but it is working like a champ so far.
edit ** now testing 1250 on the memory using rthdribl. no artifacts so far.
couldn't pass 3dmark06 w/o getting artifacts using 1250, but 1225 passed no problem w/ zero artifacts.
hi allll :)
finally i have the 4850 :D:D:D
i want to know how much can i clock the card in relax..in daily! with this system:
e6420 up to 3.2 ghz
xigmatek s1283
asus p5q-pro
vga, you know :p:
accelero s1 with 2 92mm(more or less 30-40 cfm each)
case: antec nine hundred with 3 120 on the front