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AMD 7990

LtMatt said:
I'd be looking at a better psu, if you can afford it.
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According to some posts lately matt you absolutely do not need all that wattage, especially on single GPU. ;)

beasty6 said:
Im using a antec trur power 750w, got a 7990@stock and a [email protected]

Had to send my 7990 for RMA today tho so got no PC until its sorted :(
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I returned my one too, one core used to run 10c+ hotter than the other and had big coil whine -was great for mining though. The XFX 750w black edition was the weak link having to send that back later, the modular connections were not that good.
 
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i'm using the 1000w Be-Quiet, it's brilliant, dead quiet, dead lazy, just perfect... it's much bigger than the Corsair though :eek:

i'll get another one for the rig in my signature, i'll get a refund on the Corsair and order another Be- Quiet.
 
Th0nt said:
According to some posts lately matt you absolutely do not need all that wattage, especially on single GPU. ;)



I returned my one too, one core used to run 10c+ hotter than the other and had big coil whine -was great for mining though. The XFX 750w black edition was the weak link having to send that back later, the modular connections were not that good.
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this bothers me, the 7990 has quite a few faults :eek: loads of RMAs going on right now...well at least it still has its guarantee
 
It's easy to drop the temps, you just remove the cooler and use that Liquid Pro CPU thermal paste instead, i've dont that on my 7970, the temps drop a long way, it's about 15 degrees cooler...:eek::eek:

but the trouble is they'll know that you've removed the cooler :eek:, because the Anodised screws will mark as you remove it and this card has loads of them..... the 7970 only has 4 stainless screws.

it is only safe to improve its cooling once the Guarantee has run out, you can also get better fans for it on Ebay.

the temps will also drop with normal cpu thermal paste as well, because you only have to see the mess that's there when the cooler is removed to realise it's badly applied !!!! the biggest problem we have with reliability issues is that all of this stuff is made in China...

i cant get Crossfire in this Cooler Master rig, it's too cramped, plus the 7990 is actually quite small, it's over an inch longer yes, but the cooler is nowhere near as bulky as the Sapphire Dual X, the 7970 is fat, but the 7990 is slim and long....almost elegent !!!! :)

mind you, with that metal reinforced back plate it's pretty heavy, the far end will need supporting.
 
no no no...........i sent overclockers 3 emails, i spoke to them yesterday about a refund on my RMAd corsair 750, the details are there on the screen but :-

THEY'VE SENT ME ANOTHER CORSAIR, THE SAME PSU

i cant believe how stupid they are :mad::mad:
 
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right getting back to this 7990 bios, i have a few questions:-

1.... my CPU is an i5 2500, ( for this other rig) this has to overclocked to 4.6, if not it'll bottleneck ????.....i love this cpu so i aint going to upgrade it...sorry ;)

2......cant i adjust the 7990 via AMD Catalyst..... because it handles the 7970 ok ?

3.....i'm only on 1080p 60hz tv

4.....the lower front case fan ????? what rpm/cfm do i need....because 1000rpm seems too low, but at least it's blasting straight under the card... i dont think the upper case fan is any good either, because these are both controlled automatically by the mobo bios, i cant speed them up manually, there is no adjustment of fan speed :- Asus P8Z77-V LX Intel Z77
 
Mal X said:
no no no...........i sent overclockers 3 emails, i spoke to them yesterday about a refund on my RMAd corsair 750, the details are there on the screen but :-

THEY'VE SENT ME ANOTHER CORSAIR, THE SAME PSU

i cant believe how stupid they are :mad::mad:
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You will not get a refund for RMA unless they are out of stock and there is nothing available as a replacement. This is normal business practice.
 
4. Download this and install Ai Suite with Fan Xpert 2 (or just FX2 if you already have AI Suite).
It's not officially supported on your mobo, but I can confirm that it's 100% compatible and will give you manual and auto control over 3pin/4pin fans on most headers.
Strangely enough, the V-LX is much better for FX2 than my current Z77 sabertooth, which is **** in comparison :rolleyes:
 
Uncle Petey said:
4. Download this and install Ai Suite with Fan Xpert 2 (or just FX2 if you already have AI Suite).
It's not officially supported on your mobo, but I can confirm that it's 100% compatible and will give you manual and auto control over 3pin/4pin fans on most headers.
Strangely enough, the V-LX is much better for FX2 than my current Z77 sabertooth, which is **** in comparison :rolleyes:
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thanks, but the lower fans will need cable extensions anyway because they dont reach the MOBO
 
Gregster said:
You will not get a refund for RMA unless they are out of stock and there is nothing available as a replacement. This is normal business practice.
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they've just refunded me, but they still need to collect the PSU, because i refuse to send it back to them.
 
Th0nt said:
It was/is a cracking card to be fair - it just needed water cooling from the start.
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AMD are one generation away from perfection, but i expect they've sussed it out already with the watercooled 295x2...........but this card is way too expensive right now

the dual card seems a much better idea anyway, because you're packing far more punch into basically the same area.... the card is also better constructed than the 7970. 3 years ago dual cards were rubbish but not now, but to get a really good bargain on ebay for a 295X2 means that you'll have to wait until next year.

There's next years R9 Dual card to think about as well, but my guess is this one will be pretty expensive with its new Architecture.... whatever they end up doing :rolleyes:
 
Uncle Petey said:
Ah well, I'm sure it'll come in useful one day :)
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the corsair fans reach the mobo !!! but they're rubbish fans they have no power at all..... i'm using the far superior Xigmateks but these have very short leads.

i'm getting a fan controller tomorrow..........you could never use the Corsairs to feed air to the 7990, you need something with over 70cfm and far more directional, i also have the bigger 140mm corsairs on my next rig, they'll have to be replaced too, i've just ordered those yellow bladed Akasa to replace them.
 
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