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*** Official AMD 7990 Owners Thread ***

Well my Fps issues have sorted themselves with a quick restart and putting that power setting to 50%. Getting 93fps average in sleeping dogs now which seems much better.

Do I need to reapply my MSI afterburner profile each time I restart windows?
 
CaptainRAVE said:
Well my Fps issues have sorted themselves with a quick restart and putting that power setting to 50%. Getting 93fps average in sleeping dogs now which seems much better.

Do I need to reapply my MSI afterburner profile each time I restart windows?
Click to expand...

Spot on there Captain with your fps. Think i had 94 fps or there abouts at stock.

Keep overdrive disabled. Unlocking it can mess up clocks and profile if you use afterburner. Use apply overclock at startup in afterburner to apply stock clocks and most importantly, 50% power tune at startup. :)


3k4dq0d.jpg.png
 
Just fitted my 7990 - which turned out to a major undertaking :(

Hadn't realised that the card would be much bigger than my 7950 - couldn't actually fit with the HHD caddy in place (card was about 10mm too big!), so had to remove that, which meant I then had to find alternative places to fit an HDD and 2 SSDs. What I thought would be a 10 minute job ended up taking 1.5 hours :o

Hard part is over, so now I need to see how it does with the games :D
 
Steviepunk said:
Just fitted my 7990 - which turned out to a major undertaking :(

Hadn't realised that the card would be much bigger than my 7950 - couldn't actually fit with the HHD caddy in place (card was about 10mm too big!), so had to remove that, which meant I then had to find alternative places to fit an HDD and 2 SSDs. What I thought would be a 10 minute job ended up taking 1.5 hours :o

Hard part is over, so now I need to see how it does with the games :D
Click to expand...

Check this and this, then play!
 
Steviepunk said:
Just fitted my 7990 - which turned out to a major undertaking :(

Hadn't realised that the card would be much bigger than my 7950 - couldn't actually fit with the HHD caddy in place (card was about 10mm too big!), so had to remove that, which meant I then had to find alternative places to fit an HDD and 2 SSDs. What I thought would be a 10 minute job ended up taking 1.5 hours :o

Hard part is over, so now I need to see how it does with the games :D
Click to expand...

You will want to look at LtMatt's bios flashing guide at some point - runs quieter and cooler :)
 
Carl-Brit said:
would a enermax 100w revolution 87+ (gold) psu cope with 2x 7990's or is it cutting it too close?
Click to expand...

I'm running a 1000w OCZ gold, seems fine at the moment.

CPU clocked and card at 1200 stock I didnt see it go over 1000w in 3DMark.

Pushing to 1.275v (on all cards) and i did see it spike over 1000w a couple of times.

Running at stock 1000mhz cores and 1.125v i don't see it go over 900 much (mostly around 7/800w), also factor in i'm running 3240x1920 (higher resolutions draw more power - or so I read).

Also I measuring at the wall (not sure if this is the best way?).
 
on all cards how many 7990 are you running Arrow? i have a swiftec mpc 350 pump 3570k @4.8 and around 10x 120mm fans in there with keyboard mouse external dvd drive and usb headset all on the go too, I just need to know the 1000w is enough for two cards before i buy it, would like to stick with enermax as my current 650w version is rock solid can't fault the brand
 
Right, I have started the process for RMA. However, issues I am facing are not really consistent (hence why I bounce back and fourth between "hey I fixed it!" and "god damn this blasted thing!". They come and go and there is very few explanations of how to get the stability issues to occur. All I know is since forcing a constant voltage stopped pretty much all my pc problems. Except gpu1 temps, which quite frankly get to the obscene.

Image from a test run in The Witcher II with everything set to stock level, except ulps is off. (Bare in mind I was getting massive throttling and still hitting these temps, also bare in mind the fan speed difference between gpu1 and gpu2 along with the temps).

http://img35.imageshack.us/img35/453/ylf2.jpg

The only issue I have which is consistent is Battlefield 4 locking my computer up completely when I am not forcing a constant voltage, which I assume will be thrown down to it being battlefield 4. The random blue screen crashes ("WHEA_UNCORRECTABLE_ERROR") and other 3d instabilities seem too inconsistent with no guaranteed way to kick it into instability.

I don't want to send it off to be told that there is nothing wrong with it. I have been working on getting it right for 2 months now and I know it's not right, but it will be hard to prove if the issues seem to come and go as they please.

I don't really have any choice in the matter mind. I have taken the card as far as I can personally, there is precious little else I can do to solve the problems I face.
 
BuzzLloydyear said:
Right, I have started the process for RMA. However, issues I am facing are not really consistent (hence why I bounce back and fourth between "hey I fixed it!" and "god damn this blasted thing!". They come and go and there is very few explanations of how to get the stability issues to occur. All I know is since forcing a constant voltage stopped pretty much all my pc problems. Except gpu1 temps, which quite frankly get to the obscene.

Image from a test run in The Witcher II with everything set to stock level, except ulps is off. (Bare in mind I was getting massive throttling and still hitting these temps, also bare in mind the fan speed difference between gpu1 and gpu2 along with the temps).

http://img35.imageshack.us/img35/453/ylf2.jpg

The only issue I have which is consistent is Battlefield 4 locking my computer up completely when I am not forcing a constant voltage, which I assume will be thrown down to it being battlefield 4. The random blue screen crashes ("WHEA_UNCORRECTABLE_ERROR") and other 3d instabilities seem too inconsistent with no guaranteed way to kick it into instability.

I don't want to send it off to be told that there is nothing wrong with it. I have been working on getting it right for 2 months now and I know it's not right, but it will be hard to prove if the issues seem to come and go as they please.

I don't really have any choice in the matter mind. I have taken the card as far as I can personally, there is precious little else I can do to solve the problems I face.
Click to expand...

Good luck with the rma, let us know how it goes. Looks to me like one of the cores has poor contact or something.

As for the random blue screen crashes "("WHEA_UNCORRECTABLE_ERROR")" that normally means too low vcore on the cpu or too low VCCIO voltage.
 
That error only happens when I have force constant voltage off on the card though. It's something I always had, too rare to know why it happens. Since I forced a constant voltage on the card, I haven't crashed at all. Bare in mind my setup was exactly the same, except I had a 6950, up until I saved for the 7990, only when I installed the 7990 did I start getting blue screen crashes.

The other issues such as driver crashes (screen goes black like it's attempting to change resolution, but stays at the same resolution. Sometimes it crashes the game/benchmark sometimes it all comes back after the driver recovers.). The only true stability I have felt is when I changed to Gen2 PCI-E and forced constant voltage. It has to be a problem with voltage, these stability issues have followed me through multiple drivers and Windows 7/Windows 8.1.

I have tried everything in my power to get it right, but it definitely isn't. I just hope they get to see it, otherwise I will have wasted a lot of time and money attempting to RMA.
 
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