On the functionality side of things, the Cape Verde comparisons continue. Compared to Tahiti, Pitcairn still has 12 fewer CUs and as a result less shader and texturing performance along with the narrower memory bus, but it has the same number of ROPs and the same frontend as its bigger brother, which as we’ll see creates some very interesting situations. This works out to 1280 SPs among 20 CUs – organized as a doubling Cape Verde’s interesting 4/3/3 configuration – 80 texture units, 32 ROPs, 512KB L2 cache, and a 256-bit memory bus. Pitcairn has twice the number of CUs, twice the number of ROPs, twice the memory bandwidth, and of particular importance twice as many geometry engines on the frontend. So what exactly is Pitcairn? In a nutshell, take Cape Verde (7700) and double it, and you have Pitcairn.
#AMD RADEON HD 7800 RELEASE DATE SERIES#
We’ve seen AMD capture the high-end with the 7900 series and struggle to control the mainstream market with the 7700 series, but how does the 7800 series fare amidst AMD’s lead in deploying 28nm GPUs? Let’s find out. The middle child of the family, it will be the basis of AMD’s $250+ enthusiast segment Radeon HD 7800 series. To that end today AMD is taking the wraps off the final piece of the Southern Islands puzzle: Pitcairn. Evergreen may have launched 4 chips in 6 months, but this month AMD will be completing the 3 chip Southern Islands launch in half the time – 3 chips in a mere 3 months. Now in 2012 AMD’s Southern Islands team is hard at work at wrapping up their own launch with new aspirations on quickness.
By previous standards this was a quick pace for a new design, especially since AMD had not previously attempted a 4 chip launch in such a manner.
In 2009-2010, AMD launched the entire 4 chip Evergreen series in 6 months.
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