AMD "Pircairn" 7800-series specs are here

AMD have had their launch of their Radeon 7900-series, and now its time for the next Graphics CoreNext cards to be unveiled, the "Pitcairn" cards. The Pitcairn cards will slot into the Radeon HD 7800-series, where we'll see three SKUs from this series.

First up we'll have the Radeon HD 7870, then a 2GB 7850 and a 1GB 7850. Spec-wise, we have:

Radeon HD 7870

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• 22 GCN CUs, 1408 stream processors
• 88 TMUs, 24 ROPs (de-linked from memory bus)
• 256-bit wide GDDR5 memory interface, 2 GB
• Clock speeds of 950 MHz core, 1375 MHz (5.50 GHz effective) memory

Radeon HD 7850

• 20 Graphics CoreNext Compute Units, 1280 stream processors
• 80 TMUs, 24 ROPs (de-linked from the memory bus, of course)
• 256-bit wide GDDR5 memory interface, 2 GB and 1 GB variants
• Clock speeds of 900 MHz core, 1250 MHz (5.00 GHz effective) memory