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Club 3D Radeon HD 7990 6GB review: AMDs new dual-GPU card

Two Radeon HD 7970s on one card

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Introduction

Finally! We had to exercise some patience, but the dual-GPU version of the Radeon HD 7970 is here. Hardware.Info tested the Club 3D Radeon HD 7990, including EyeFinity and overclocking.

When AMD launched the Radeon HD 5870 it took about two months before the dual-GPU version appeared in the shape of the Radeon HD 5970. With the Radeon HD 6970 we only had to wait a month before the dual-GPU Radeon HD 6990 was released. We had hoped for a similar release schedule after the Radeon HD 7970 came out in December, 2011, but alas. Even when Nvidia came with its dual-GPU GeForce GTX 690, AMD did not come with an answer.

It's not a complete mystery why, however. For the 7000 series AMD applied a different design for its chips. The flagship model, the Tahiti GPU that's the foundation for the 7970 and the 7950, is much complexer and larger than its predecessor, and consumes more power. The Radeon HD 7970 graphics card with a single GPU has a TDP of 300 watts. Do the math, and it's obvious that a card with two Tahiti chips will be very power-hungry and produce a lot of heat. Fortunately the target audience for these types of high-end dual-GPU cards isn't overly concerned about those aspects.

Club 3D Radeon HD 7990 6GB
Club 3D Radeon HD 7990

So now, more than a year after the introduction of the Radeon HD 7970, the dual-GPU version has arrived. AMD has not made a lot of noise for the Radeon HD 7990, the first time in years that's the case actually. The number of partners that are making 7990 cards is also quite limited. Aside from the ambitious Ares II from ASUS (which is in fact a type of 7990), you've got PowerColor, VTX3D and Club 3D. And it's Club 3D that sent us the Radeon HD 7990.

It's not a cheap card with an average price of £779, but at least it's more affordable than the ASUS Ares II.


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