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GTX 590 and HD 6990: Tri and Quad GPU performance
by Damien Triolet
Published on June 8, 2011

MSI supplied us with one of its N590GTXs and we also managed to get our hands on a Sapphire Radeon HD 6990.


MSI N590GTX
The MSI N590GTX uses the reference GeForce GTX 590 design and only differs in terms of the sticker on the cooler card as well as the engravings on the two small plates at the back from which the NVIDIA logo has been removed:


MSI also respects the reference clocks and delivers its card with a CD for drivers, a manual, a rapid installation guide, a DVI to VGA adaptor, an HDMI to DVI adaptor, a mini-DP to DisplayPort adaptor and two 6-pin to 8-pin PCI Express power supply cable convertors. These adaptors will be particularly practical when setting up a quad SLI system as few power supplies, even powerful ones, have four 8-pin connectors.


Sapphire Radeon HD 6990
Like MSI, Sapphire makes do with the reference Radeon HD 6990 sticker:


Sapphire delivers its card with a CD for drivers, a manual, a DVI to VGA adaptor, a mini-DP to DisplayPort adaptor, a mini-DP to HDMI passive adaptor, a mini-DP to DVI Single Link passive adaptor, a mini-DP to DVI Single Link active adaptor and a CrossFire connector that is sufficiently long to support four slots. Note that Sapphire doesn’t supply an 8-pin power supply adaptor.

Sapphire respects the reference clocks and follows the AMD policy in terms of including the switch to allow access to the 450W bios. There’s a sticker on the switch and using it voids the guarantee.


Given this guarantee problem with the 450W bios, we used the 375W mode exclusively for this test. Note however that with some partners (XFX and Powercolor) activation of the 450W bios doesn’t void the guarantee.

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