While AMD has not officially released any dual-GPU HD 7970 card, we have seen two implementations in recent months: the PowerColor HD 7990 Devil 13 and HIS HD 7970 X2.
Today, ASUS launches their ASUS ARES II dual-GPU HD 7970, which was first announced at CES earlier this year.
The ASUS ARES II is one of the rare cards to come with watercooling out of the box. At its heart are two full HD 7970 graphics processors that each run higher clock speeds than AMD's HD 7970 GHz Edition. In addition to the watercooling (for the GPUs), a fan has been installed to keep memory chips and voltage regulation circuitry cool.
Everything about the ARES II screams "premium". Starting with the thick metal unibody cooler construction, the two included fans, the nice presentation in a suitcase, and the fact that this card is a limited edition with only 1000 pieces produced.
The card also employs the latest PCI-Express Gen 3 bridge from PLX, which ensures maximum performance, even with two ARES II cards in CrossFire.
Price-wise, ASUS has told us that the card will retail at $1599 - quite hefty.
| HD 7970|
| ASUS ROG |
|Shader Units||2048||2048||1536||2x 1536||2x 512||2x 1536||2x 2048|
|ROPs||32||32||32||2x 32||2x 48||2x 32||2x 32|
|Graphics Processor||Tahiti||Tahiti||GK104||2x Cayman||2x GF110||2x GK104||2x Tahiti|
|Transistors||4310M||4310M||3500M||2x 2640M||2x 3000M||2x 3500M||2x 4310M|
|Memory Size||3072 MB||3072 MB||2048 MB||2x 2048 MB||2x 1536 MB||2x 2048 MB||2x 3072 MB|
|Memory Bus Width||384 bit||384 bit||256 bit||2x 256 bit||2x 384 bit||2x 256 bit||2x 384 bit|
|Core Clock||925 MHz||1050 MHz||1006 MHz+||830 MHz||607 MHz||915 MHz+||1100 MHz|
|Memory Clock||1375 MHz||1500 MHz||1502 MHz||1250 MHz||855 MHz||1502 MHz||1650 MHz|