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7990 Custom Bios - Remove Throttling

Riiigghhhhttttt...

Matt, I have flashed using the 1st BIOS you sorted for me. It works! the GPU's usage are staying within 1% of each other an their temps are staying within 4C.

The only negative I see is that on MSI afterburner I cannot set the power limit % above 20. The 50% option seems to have gone.
 
Avalon said:
OK double checked i've flashed to bank 1, removed AB and CCC/driver and flashed the higher TDP bios over to bank 1, re-installed drivers then disabled ULPS with AB (after re-installing it). Same issue as before, GPU 2 hits 99%, GPU 1 hits 99% then after a few seconds does the high/low switching to 64% with or without the power limit slider being at 50%. I've tried whacking the fans to 100% but the only thing that seems to reduce the switching is upping the voltage to 1225. After a few minutes of mining that results in a black screen.

I'll have a go with the second bios later but I'm not holding out much hope as it does the same thing on stock bios/clocks/voltage when bank 2 is booted so I suspect I'm just unlucky and got the card that can't hit stock clocks at stock volts with full load.

OT but Walking Dead has been very, very average this year, the behind the scenes changes have taken a toll on screen.
Click to expand...

What clocks are you running? Try running stock and lowering voltage as much as possible. Clearly minings puts the gpu under immense load. 1.225v is overkill for stock. 1000/1500 should be manageable on 1.100v-1.175v depending on how good the cores are. I can try making you a special voltage with super high TDP if you want.

Footyslayer said:
Riiigghhhhttttt...

Matt, I have flashed using the 1st BIOS you sorted for me. It works! the GPU's usage are staying within 1% of each other an their temps are staying within 4C.

The only negative I see is that on MSI afterburner I cannot set the power limit % above 20. The 50% option seems to have gone.
Click to expand...

Great news. Well as i upped the stock power limit by 50W 50% should not be needed any more. Let me know how you get on. I may have to update the OP with this bios tbh. It should remove the need for everyone to use 50% power tune then.
 
Ok guys ive added a new version of the bios to the OP. This one has a higher stock TDP limit, now 250W at 0%. I've changed power tune back to 20% now as it works at the same previous level as it did at 50% because of the increased standard TDP. This should work out better in the long run. I recommend everyone update to this bios. I've updated the OP.

Bios Download
http://www.sendspace.com/file/n287zr
 
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Totally stock clocks, I'm about to try the latest bios just incase. Stock voltage on my card is apparently 1.2, I've not tried dropping it as I assumed it was right but I'll give it a go and see if it helps.

*edit* lowering voltage helps short term... As soon as core 1 hits 75c it begins to throttle, I'm down to 1.05 now and it's holding full load!

*edit2* the second I submitted that edit it throttled :(
 
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Avalon said:
Totally stock clocks, I'm about to try the latest bios just incase. Stock voltage on my card is apparently 1.2, I've not tried dropping it as I assumed it was right but I'll give it a go and see if it helps.

*edit* lowering voltage helps short term... As soon as core 1 hits 75c it begins to throttle, I'm down to 1.05 now and it's holding full load!

*edit2* the second I submitted that edit it throttled :(
Click to expand...

Try this bios, further increased TDP.

http://www.sendspace.com/file/b56hvj
 
Ok, a few posts back I mentioned not being able to install drivers on Matt's bios, since then I have discovered the following crashes on Windows 8.1:

- Black screen
- Locked up screen
- Windows crashes (screen locks up)

I've seen this on Matt's bios, my modded ASUS bios and the stock bios and it happens on all driver versions, old new WHQL and the beta.

It's not the cert error and i've tried using UDD from safe mode to remove the existing drivers.

The only thing that works is to keep on installing until it eventually goes on, drives me crazzzzy.

Anyone else seeing this issue?
 
Flashed your latest BIOS this morning Matt.

Voltage on 1.110 played over an hour of BF4 ok (1920x1080 Ultra 4xMSAA Vsync off 120hz). Stock clocks on the card. Max Temp 64c Max fan 73%.

Had a directx crash last night on BF4 but had voltage on 1.100. So sticking at 1.110.

Cheers for the updates and advice for us 7990 owners Matt.
 
H@mmer said:
Flashed your latest BIOS this morning Matt.

Voltage on 1.110 played over an hour of BF4 ok (1920x1080 Ultra 4xMSAA Vsync off 120hz). Stock clocks on the card. Max Temp 64c Max fan 73%.

Had a directx crash last night on BF4 but had voltage on 1.100. So sticking at 1.110.

Cheers for the updates and advice for us 7990 owners Matt.
Click to expand...

Good stuff. :cool:
 
I've solved the coil whine on my card, its almost inaudible. The solution? Rather that using one pci-e plug from my psu i spread the load over two. Now the card really is silent. Very happy with this discovery. I recommend others try it if your card has noticeable coil whine like mine did.
 
LtMatt said:
I've solved the coil whine on my card, its almost inaudible. The solution? Rather that using one pci-e plug from my psu i spread the load over two. Now the card really is silent. Very happy with this discovery. I recommend others try it if your card has noticeable coil whine like mine did.
Click to expand...

So which is it? :D

That would only work if you was using different rails apparently, as it is off the same feed most of the times, so swapping leads makes no odds.
 
Gregster said:
So which is it? :D

That would only work if you was using different rails apparently, as it is off the same feed most of the times, so swapping leads makes no odds.
Click to expand...

Well if i stick my head in the case i can hear it but its virtually silent. I can still hear a very faint buzz, but its unnoticeable unless my ear is against the side of the case. Its a big improvement from before.
 
Yer, it is probably bedding in. Did you try some hard benching? That worked for me after putting my Lightnings under water. That capacitor whine was horrendous but some serious benching worked.
 
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