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HD7990 clockspeeds detailed

DamoTourettes said:
You'd be mad to go for it - the dual GK104 is going to be WAY more efficient, and probably much faster as well.
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GK104 isn't even out yet mate, I'd suggest waiting for reviews before making a sweeping statement on it ;)

Either way, neither company has exactly excelled with dual GPU cards of late. The 6990 was a hot running blow drier of a card, and the GTX590 needed a driver downclocking to stop it from exploding. And they were both massively overpriced.

Considering the pricing strategy of AMD and the resultant lack of need for Nvidia to reduced their prices, at the moment I don't think that is set to change.
 
Dual GPU single cards.

Wassste of timmmme.

Heat leading to lack of overclocking headroom and a price premium to boot.

Might as well do Xfire/SLI with 2 distinct cards and spend less as a result.
 
Sin_Chase said:
Dual GPU single cards.

Wassste of timmmme.

Heat leading to lack of overclocking headroom and a price premium to boot.

Might as well do Xfire/SLI with 2 distinct cards and spend less as a result.
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I love my 5970, as I was water-cooling it was the easier option vs 2 5870's and cost wise about the same. The cards certainly have their place, but are obviously never going to be a mainstream product.
 
straxusii said:
At stock yes however we have yet to see how well GK104 overclocks, if it has little headroom then AMD will blow it away once overclocked.
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The 680 and 7970 seem to be roughly equivalent clock-for-clock (from early leaks), and the 680 is clocked a little higher on stock. It is possible that the 7970 will overtake the 680 with both at maximum clocks, particularly at high resolution, but the overall difference unlikely to be more than 5%. The 7970 won't "blow it away" by any stretch of the imagination.


Anyway, with dual-GPU cards the most important factor is power efficiency ('performance-per-Watt'), so whatever the performance of the single-GPU cards, the one with the lower power draw will have the natural advantage. If "TDP ratings" are to be believed the 680 has the advantage here, though we will need to wait for independent reviews in order to verify this.
 
Nvidia would have to give the 690 8GB of vram, just so that it could negate any advantages the AMD 7990 might have in the memory department.


hehe I suppose it could even lead to a pc with more video memory than motherboard memory, not that anyone buying a dual gpu card would only have 4GB.
 
bru said:
Nvidia would have to give the 690 8GB of vram, just so that it could negate any advantages the AMD 7990 might have in the memory department.


hehe I suppose it could even lead to a pc with more video memory than motherboard memory, not that anyone buying a dual gpu card would only have 4GB.
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Pretty sure that you need more system ram than video ram due to paging?
 
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