ATI 38xx BIOS editor (Finally!)

[Jejking]

Anybody got a clue about how LOW you can go with that voltage?

I pose this question for my 2D-mode, to save some power. Jups, powerwhore is on the loose again , I saw 0.9v in some screenies but also that ATi's PowerPlay uses 0.97v for 2D as well in some detaillists for the HD3850 512MB PCS Bios, so I can assume that my card goes to 0.97v in 2D?

[Jejking]

Okay, I have seen that 0.9v is the lowest. But WHAT if you are going to type a lower value? Will it be picked up by the card or will it only take 0.9v or higher? Can anyone have a go on that?

[raibemunn]

lowering 2D voltage didnt work for me at all. in fact changing it forced the card to be in 3D voltage settings (not clocks) in windows. i had to click defaults in riva to get 2D voltage. it was weird, but then again i wasnt using the original bios.

[|Aegi3|]

Question, downloaded the newest version of the editor, had already oc'd the ram on my Sapphire 3850 256mb to 1080 and was stable, so i went to edit the bios with the editor, saved the bios, and used winflash to update the bios, and restarted, screen would go black @ login screen then my pc would restart.... im wondering wth went wrong? Any ideas, or more likely how exactly should i do this with the editor if i want my 3d clocks to be 700/1080

~ Thx

[maxmaz]

FYI, the latest version has some preliminary fan control through bios as well. It seems to be fixed at just one level for now, but hopefully, soon they will be able to release a version with full fan control.

http://www.computerbase.de/forum/sho...d.php?t=372893

[maxmaz]

FYI, the fan control through bios seems to be working perfectly fine. Initially, I thought that it only set a fixed level for the fan, but when I set "threshold = 40" and "steepness = 35%" and flashed my HD3850 (VisionTek, 256MB), I noticed that the fan speed is being actively controlled... Right now, it's idling at 43% with 52 degrees and under the load, tha fan revs up, reaching 100% around 73-74 degrees. Also, you can hear the fan reving during boot up. I have removed rivatuner and everything is working great. So, I guess this IS the fan control solution for HD3850 everyone was looking for...

[omga14]

Question, downloaded the newest version of the editor, had already oc'd the ram on my Sapphire 3850 256mb to 1080 and was stable, so i went to edit the bios with the editor, saved the bios, and used winflash to update the bios, and restarted, screen would go black @ login screen then my pc would restart.... im wondering wth went wrong? Any ideas, or more likely how exactly should i do this with the editor if i want my 3d clocks to be 700/1080

~ Thx

Same thing happened to me with prelim testing of my card and all I did was shut off the comp and restart. System came back up to desktop without issue. Just something to try if you haven't already.

On another note have you noticed a slight drop in 3Dmark scores with the higer clocks? I have my Xeon only clocked to 3.2ghz so it may be a bottleneck issue or the ram timings on my HD3850 512mb are going to slower settings with the increased freq.

[0ut0fstep]

I am Thinking this wont work with vista 64.. I am getting the high load bug when trying to run the program have to end process on the winflash utility .

Anyone running it in vista 64 ultimate ?

Right now im stuck at 904.5 on the cores I can take them much higher just using tests with ati furry cube but i crash out on the firefly scene in 3dmark06 if i take the cores any higher. and i get an error

"IDirect3DVertexBuffer9:Lock failed: n/a (unknown)"

it makes it thru all the other tests in 3dmark06 hoping its just buggy drivers. and when we get a good release i can take my core clocks higher

Memory is solid I can go to 1115 and get no artifacts in furry cube once I break that level tho i start getting artifacts.

Gpu never goes over 52C on full load at 100% fan speed when running at 904.5 +1115 mem.. So i still have some room

[dokar]

FYI, the fan control through bios seems to be working perfectly fine. Initially, I thought that it only set a fixed level for the fan, but when I set "threshold = 40" and "steepness = 35%" and flashed my HD3850 (VisionTek, 256MB), I noticed that the fan speed is being actively controlled... Right now, it's idling at 43% with 52 degrees and under the load, tha fan revs up, reaching 100% around 73-74 degrees. Also, you can hear the fan reving during boot up. I have removed rivatuner and everything is working great. So, I guess this IS the fan control solution for HD3850 everyone was looking for...

I 've tried this automatic fan speed control. The "Threshold" is working fine, but the "Steepness" is absolutely ineffectual.

My combinations:

T:55°C + S:20%-80%, result: quiet operation in 2D; too high temperatures and too low fan speeds in 3D

T:40°C + S:20%-80%, result: too noisy operation in 2D; too good temperatures and too high fan speeds in 3D

I will try T:45°C.

[dokar]

I 've found the ideal threshold value for my HD3850 256MB: 45°C.
There is no difference between T45:S25 and T45:S75.
The fan switch to 100% at 78°C in both cases.

[binormalkilla]

So how far have you guys OCed the 3870 with voltage on water? I'm going to sell these 2900XTs and get a pair until the R770 arrives.

[Diamback]

I have this problem too

Edit: I scrapped using atiwinflash.
I made a bootable usb stick like this and just put atiflash and the modded bioses on and did it in dos...

I have this problem too

[=[PULSAR]=]

sorry to bring this thread back but anyone know where to find this bios editor to raise max gpu clock?

[xMrBunglex]

a member named Daidalos made a bunch of BIOSes for the 3870. here is a link to his post that had all of them zipped together.

http://www.xtremesystems.org/forums/...2&postcount=83

[Martin.v.r]

edit the Signature on 3870x2 ? in HEX,there are some who may this to more overclock, it is lock to max 945/1100,because it is the regime which oc in ccc
It is not a TOP bios,to hynix mem,but the Signature is there from,edit whit samsung mem.

[flapane]

So are we sure that 0,974 is the lowest voltage for 3850?
I have seen that ati tray tools has an option called CUSTOM VDDC LIST, where you can write anything you want.
Any hints?
It would be nice to lower voltage in 2d.