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7990 Custom Bios - Remove Throttling

My coil whine was absolutely terrible when I first installed the card. It has gone now after a few tough benches and a bit of gaming. Guess it just needed bedding which I was happy to do :p
 
LtMatt said:
If something goes wrong and you get no display from the cards after flashing the bios. Turn the pc off and flick both cards bios switch to position 2 to use the stock backup bios. Turn the pc back on and all will be ok.
Click to expand...

Noob question, is there two bio switches or one?
 
Right, ASIC's are within 1% of each other but one VRM hits the mid 80's under load and the other hits 130c and strangely that's the one that throttles. It's nothing to do with the BIOS or drivers so RMA time for me which is a little frustrating. I'll flash it back to stock and doubtless wait a week :(
 
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Will these custom bios generate more heat? I have a old antec 300 case. It's not very good, not much room.

Had to cut HD casing out just to fit the card. I've found out that sleeping dogs on maximum settings still has the usage at 99% - 95% on both GPUS in some areas on the map, so i sat around and watched temps for about 10 minutes. Good performance, just the Temperatures i've seen climb to 84c, fanspeed 88%, it might climb even higher.

I have power limit at 20%, voltage at 1175.

I'm not used to these sort of temps. I had to slot the card on the bottom pci due to space problems. Maybe i should return this card for something smaller and not as hot?

64bit Win 7

CPU: i5 2500k overclocked 4.6ghz
GPU: gtx 570 twin frozr III
MotherBoard: Z68A-GD65 MS-7681
Ram: 8gb
PSU: OCZ ZS Series 750W Power Supply
Case: Antec Nine Hundred
 
Yawbster said:
Will these custom bios generate more heat? I have a old antec 300 case. It's not very good, not much room.

Had to cut HD casing out just to fit the card. I've found out that sleeping dogs on maximum settings still has the usage at 99% - 95% on both GPUS in some areas on the map, so i sat around and watched temps for about 10 minutes. Good performance, just the Temperatures i've seen climb to 84c, fanspeed 88%, it might climb even higher.

I have power limit at 20%, voltage at 1175.

I'm not used to these sort of temps. I had to slot the card on the bottom pci due to space problems. Maybe i should return this card for something smaller and not as hot?

64bit Win 7

CPU: i5 2500k overclocked 4.6ghz
GPU: gtx 570 twin frozr III
MotherBoard: Z68A-GD65 MS-7681
Ram: 8gb
PSU: OCZ ZS Series 750W Power Supply
Case: Antec Nine Hundred
Click to expand...

If you're running at stock you might be able to lower voltage more. Try 1.150mv. You could try removing the side of your case if you're unable to set up any sort of side exhaust fan. The problem is the 7990 dumps a lot of heat in the case so unless you get it out of there it will heat up over time. It sounds like your airflow is poor.
 
Yawbster said:
Will these custom bios generate more heat? I have a old antec 300 case. It's not very good, not much room.

Had to cut HD casing out just to fit the card. I've found out that sleeping dogs on maximum settings still has the usage at 99% - 95% on both GPUS in some areas on the map, so i sat around and watched temps for about 10 minutes. Good performance, just the Temperatures i've seen climb to 84c, fanspeed 88%, it might climb even higher.

I have power limit at 20%, voltage at 1175.

I'm not used to these sort of temps. I had to slot the card on the bottom pci due to space problems. Maybe i should return this card for something smaller and not as hot?

64bit Win 7

CPU: i5 2500k overclocked 4.6ghz
GPU: gtx 570 twin frozr III
MotherBoard: Z68A-GD65 MS-7681
Ram: 8gb
PSU: OCZ ZS Series 750W Power Supply
Case: Antec Nine Hundred
Click to expand...

LtMatt said:
If you're running at stock you might be able to lower voltage more. Try 1.150mv. You could try removing the side of your case if you're unable to set up any sort of side exhaust fan. The problem is the 7990 dumps a lot of heat in the case so unless you get it out of there it will heat up over time. It sounds like your airflow is poor.
Click to expand...

Check my post here. If you have a good airflow and case cooling setup you can keep the 7990 cool (75-85c depending on the game, vsync off etc) and silent by running auto fan. At these temps auto fan is working at 40-50% ish and is silent.
 
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Look at Guru3D trying to figure out why their overclocked 7990 does not show any improvement in FPS over stock. :D #AskLT #throttle

Guru3D said:
Now we have ran into issue overclocking wise with our particular sample, we applied the following:

Power Target 120%
GPU clock 1100 MHz
Memory clock 1575 (x4) MHz
Fan control RPM default
This resulted in the very same numbers at reference clocks. We need to investigate further to see what's going on.
Click to expand...

BjLVNz8.jpg

Source
http://www.guru3d.com/articles_pages/radeon_hd_7990_review,28.html
 
LtMatt said:
Check my post here. If you have a good airflow and case cooling setup you can keep the 7990 cool (75-85c depending on the game, vsync off etc) and silent by running auto fan. At these temps auto fan is working at 40-50% ish and is silent.
Click to expand...

My cooling is no where near yours. I have attached images so you can see what i have.

Front
http://i.imgur.com/54alHaOh.jpg
2 fans at the front

Side View
http://i.imgur.com/ENW7PsZh.jpg
tiny hole for excess heat to escape ( Don't think its enough )

Interior
http://i.imgur.com/upZn5PCh.jpg
Fan at top, cpu attached to back fan

I can't move the card up to the secondary slot, it just won't fit with all the cables.

Would it be workable without the side case on maybe? I could try.


Thank you for your help, at this rate overclockers should hire you on their forums, LOL.
 
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Yawbster said:
Thank you for the quick response mat. I'll remove the side case for now and see how it goes.
Click to expand...

That is the best option. I predict a big fall in temps. Unfortunately the 7990 needs a full tower case for optimum cooling i think. I only have a mid tower case but i have a good airflow and most importantly a capable side exhaust fan setup.
 
LtMatt said:
That is the best option. I predict a big fall in temps. Unfortunately the 7990 needs a full tower case for optimum cooling i think. I only have a mid tower case but i have a good airflow and most importantly a capable side exhaust fan setup.
Click to expand...

So do you think i'll be struggling to keep this thing cool enough on stock with lower voltages?


Edit:

Actually, would it be best just getting a new case? What would be a good case around the £100 range?
 
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Yawbster said:
So do you think i'll be struggling to keep this thing cool enough on stock with lower voltages?


Edit:

Actually, would it be best just getting a new case? What would be a good case around the £100 range?
Click to expand...

With the side off you'll be fine. A better case would help though if you wanted to keep a side panel on. I'm no expert in cases im afraid. Even my case is not that great for airflow thats why i had to install so many fans. Its annoying i still get a very hot area (case warm to the touch on the outside) to the left bottom/middle corner of my side exhaust fans.
 
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