Anything able to do this yet?
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Anything able to do this yet?
I think it's a bios limit put on the card just like the 3850 and 3870.
AMD's point this go around is to make the difference between the 4850 and 4870 larger than it was with the 3850 and 3870, thus they make it to where you can't overclock the 4850 as much.
I'm pretty sure a BIOS editor will come out soon enough to remove the BIOS lock though.
Problem solved... 720 tested, gonna bump up and test some more!!!! more info shortly( an hour or so.)
Gimme, Gimme. Gimme:DQuote:
Originally Posted by jimmyz
Jimmyz how did you do it! share please!
I found the 3d clock values with hexedit and edited the bios but it would not work above 700mhz..even with 740mhz flash it defaulted to 700mhz in windows.
Did you disable the overdrive in your control center?
me? no I left it on....
Then put it off and try again :p: (I dunno if you're answer is a joke :D)
nope not a joke. I'm somewhat noobish with this, I always used software like rivatuner before.
I will try tomorrow and report back
But here your CCC force your card to run @700mhz, you just have to click below the padlock to disable the overdrive and test with GPU-Z 0.24 (maybe you'd need to reboot)
The long and the short story is, the bios can be modded. I had 800/1100 up and running. problem is my fix does away with powerplay. which is definitely not advisable on a daily use rig. I was hoping not to run into issues but the last two hours has been crash after crash. some I believe were system tweaks but most were the rersult of the cards trying to use powerplay settings which don't exist anymore. I would not want anyone to brick their new card following my advice. so I am continuing testing. I feel the answer is going to lie in software because the bios route is too Xtreme for most people. there does not seem to be a lock of any kind as the benches were able to complete, however when the bench is over the screen gets corruption ( it goes away with a reboot). so it is not the final solution I was hoping for.
at 750 however is another story. It seems to do well with 750 (maybe 800 is just too high for 2-d). more info to come, I won't leave you guys in the dark, however I don't want people killing great cards on my advice. it is 8pm my time by 9pm (1 HR ..lol) I will post up more.
^^^^^^^^^^^^^^^^^^^^^^^^^^ok^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^:)
What Vgpu are you running with?
easrider from ocuk forums ?Quote:
Originally Posted by easyrider
well done jimmz keep pushing.......well not to hard :up:
4850 I would think.Quote:
Originally Posted by Clemmaster
Its in the title.
as high as 1.6v but not much gain from it.Quote:
Originally Posted by Clemmaster
Yes.Quote:
Originally Posted by Dragy2k
Mate
a french OC the 4850 to 800/1100 @ 1.3V with vf700
http://www.zimagez.com/zimage/3dmark800.php#
by editing the bios
i got my 4850 clocked to over 700mhz turns out the ccc was forcing it to 700mhz so I just disabled overdrive, now currently at 740mhz 1.23v
Nice :)
What tool did you use to edit your bios? I'm new with ATI cards :p:
i used a hex editor. check the bios section for more info
Also guys I am running 64bit windows Vista and I can't get Rvia Tuner working or the fan speeds going can anyone help me with that??? How do I turn the fans up on these cards??? P.S. my sig is completely out of date..
A VF700 is enough for this card?!?! time to canabalize my 7600GT. Will have to buy lots of ram sinks though I assume for all of the stuff.
Hi guys,
Got my Sapphire 4850 yesterday, the temps freak me out :( Is the GPU-Z is accurate on the temps of our 4850? Im idling @ 78deg while my load is 82deg. Another question, does the Zalman GV1000 is perfectly fit on 4850?
-battlestar
Using stock cooler?:confused:Quote:
Originally Posted by gurusan
yes. And asus fan control. THe stock cooler isn't half bad if you can control the fanQuote:
Originally Posted by Battlestar
Cool, I assume you used this trick (you posted on previous thread):Quote:
Originally Posted by gurusan
?Quote:
disabled overdrive, pencil modded...edited the bios with a hex editor...and flashed
yup. It sounds like a new version of RBE will be released very shortly though...allowing fan control as well as clock changes. That's much easier than editing the hex tables....staring at all those values gives me a headache.
Hehehe but you have a nice table there buddy, let say you have successfully OC your card in hard mode :) RBE is the easiest way, but if the release won't up this evening, I'll try your trick :)Quote:
staring at all those values gives me a headache
VF900 certainly does work with this card, i'm running the ZV9 (the silver/red version) on mine.Quote:
Originally Posted by Jakalwarrior
With fan at lowest (silent) idle temps are ~50C, load temps ~85C (stock cooler was giving me 82C idle, 92C load).
If you crank the fan up to about half way on the VF900/FC-ZV9 then load temps come down to ~70C, maxed out fan (noisy as hell!) will give you high 50's/low 60C's.
The Accelero S1 will prolly give you better temps with a 120mm strapped to it, but I didn't have the space to squeeze one in.
LOLQuote:
Originally Posted by easyrider
RBE doesn't display anything here, in Vista Business x86... what am I doing wrong?
did you click file -> load bios ?Quote:
Originally Posted by T2k
^lol.
it works fine for me..I'm on Server 2008 64bit
Hi I have a problem regarding the RBE latest version. I set the fan into default settings and it shows on GPU-Z 50% fan speedand it drops my temps from 72deg to 61deg :), my problem is it underclock my GPU Clock into 500Mhz but the Default Clock remains 625 Mhz with same Memory 993Mhz I think. Is this normal? Sorry I can't provide screenshot still here @ the office :( Anyways, I revert my default BIOS and still waitin' for your answers :)Quote:
Originally Posted by gurusan
-battlestar
Does it stay at 500 when you give 3d work load?
Hmm Im not sure buddy, But Im pretty sure when you check on GPU-Z under Graphics Card Tab at the botton you can see this following:Quote:
Originally Posted by Jakalwarrior
Using RBE with 50% FanSpeed (I used the Set all fan settings to recommended values that's why came up 50% FanSpeed)
GPU Clock: 500Mhz Memory:9XXMhz
Default Clock 625 Mhz Memory:9XXMhz
Also on GPU-Z Sensor Tab:
GPU Core Clock: 500Mhz
GPU Memory Clock: 9XXMhz
My Default BIOS
GPU Clock: 625Mhz Memory:9XXMhz
Default Clock 625 Mhz Memory:9XXMhz
Another thing, I don't see anything this kind of tables on my latest RBE :(
*See attached file with red box
http://img235.imageshack.us/img235/7...2621kn2gx2.jpg
Im using WinXP SP3
Sapphire 4850
can u give our RBE software ? I can't download it from anysite !
THx !
best regard !
How about checking the site where it always is? :pQuote:
Originally Posted by thriller99
http://www.techpowerup.com/downloads/Utilities/RBE/
i don't have that table on mine either.Quote:
Originally Posted by Battlestar
Ok, Im downloading the MSI & Visiontek 4850 BIOS here and it looks like both Visiontek & Sapphire have no Uselook up table for the latest version of RBE. MSI have one and not sure on the other brands :)
My Sapphire 4870 has lookup tables in the latest RBI, just FYI. I set everything to recommended and now the card sounds like a hair drier half the time, but runs a lot cooler :D
The cooler reminds me of my x1900xt...
Yes.Quote:
Originally Posted by W1zzard
so when can we expect the normal overclock utilities to support 4800 series? Way more easier and safe to overclock on driver level instead of bios flashing.
http://www.hardforum.com/showthread.php?t=1322701Quote:
Originally Posted by painkilla
Not a "normal" tool like RivaTuner but a simple software one at least...
How does a 4850 @ 740/1050 compare to a 4870 @ stock in game performance?
Is it normal for the default memory to be stable at 1100mhz?
I flashed mine with 1.327v core and it didnt seem as stable on the core as when I used 1.158v.
Right now 1.158v 700/1100mhz flash seems to have worked really well. Updated the FAN profile so its idling around 55c now with 45% FAN and kicks up to about 70c under load with 55% FAN. Seems quite solid.
IIRC 10%Quote:
Originally Posted by HamTard
Powercolor use the following HSF on their overclocked 4850's:
http://www.zerotherm.net/eng/product/GX810.asp
It doesn't list the 3800 and 4800 series as being compatible, but they are used on both Powercolor and Club 3D cards.
Maybe send an E mail to Zerotherm if you need to ask about compatability, but the coolers are very good - 3850s run at 70 degrees under full load at 775 Mhz, I'll get my 4850's soon to play with.
I think the best solution is to just buy a card with one of these on it. No furthur modding required, just install it and start overclocking =D
I wanted to put my Zerotherm cooler on my 4850 Sonic but Palit put the freaking warranty sticker on one of the screws. It's not a big deal because the Sonic's heatpipe cooler is already so much better than the stock one. The Sonic's stock clocks are 685/1000 iirc and I tried Auto-Tune in CCC just for the heck of it and it set the clocks at 720/1040.
BC this thread got resurrected I thought I would give some info for 24/7 vmod compatibility. What I did was pencil mod mine up to ~1.35v max. However, the profile settings have so much control over voltage that this can be greatly reduced in 2d. Using "ati tray tools" (http://downloads.guru3d.com/ATI-Tray...nload-733.html) you can apply your OC and profile voltage automatically. My computer boots into 500/700 1.00v (~0.8v profile), and boosts to 835/1100 1.35v (1.158v profile) in 3d. Very nice, and saves me from needing to hardmod (until I can't help myself and need 900+ :D).
BTW, if your a vista x64 and don't want to disable non-signed driver blocking (F8 @boot) every time, get "ready driver plus" and it will do it automatically for you every time.
i'm sure this is old news, but i'll mention it anyway,
some new 4850 cards like the asus 4850 Top have overdrive limit of 800mhz,
so you can use those bios for more OC