AMD’s Radeon HD 7970 is based on the Tahiti XT core which is built using the company’s new Graphics Core Next (GCN) architecture designed specifically to improve the compute performance of its cards.

A recent leak revealed that this GPU would feature 32 Compute Units, for a total of 2048 streaming cores, 128 texture units, 32 ROPs and a 384-bit wide memory bus.

This will be connected to 3GB of GDDR VRAM working at 1.37GHz (5.5GHz effective), while the GPU will be clocked at 925MHz. The graphics card is expected to be announced on December 22, with availability being scheduled for January of 2012.


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AMD Radeon HD 7970 Review: 28nm And Graphics Core Next, Together As One


Cutting right to the chase, the 7970 will serve as AMD’s flagship video card for the Southern Islands family. Based on a complete AMD Tahiti GPU, it has 2048 stream processors organized according to AMD’s new SIMD-based GCN architecture. With so many stream processors coupled with a 384bit GDDR5 memory bus, it’s no surprise that Tahiti is has the highest transistor count of any GPU yet: 4.31B transistors. Fabricated on TSMC’s new 28nm High-K process, this gives it a die size of 365mm2, making it only slightly smaller than AMD’s 40nm Cayman GPU at 389mm2.

Looking at specifications specific to the 7970, AMD will be clocking it at 925MHz, giving it 3.79TFLOPs of theoretical computing performance compared to 2.7TFLOPs under the much different VLIW4 architecture of the 6970. Meanwhile the wider 384bit GDDR5 memory bus for 7970 will be clocked at 1.375GHz (5.5GHz data rate), giving it 264GB/sec of memory bandwidth, a significant jump over the 176GB/sec of the 6970.


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NEWS just in the new ATI Radeon HD 7970, will be on sale (in the UK) at select retailers on 9th January 2012

check out this link for more information and one of the best places in the UK to buy Computer hardware
http://www.scan.co.uk/tekspek/gpu-graphics/amd-radeon-hd-7970

its one hell of a card and goes like the clappers