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In the coming weeks, AMD will flesh out its Radeon HD 7000 lineup with its mid-range 7800 Series based on the Sunnyvale chip maker's Pitcairn GPU. Pitcairn slips neatly in between Cape Verde (Radeon HD 7700 Series) and Tahiti (Radeon HD 7900 Series) and will likely consist of three separate videocards, according to information that was leaked to the Web over the weekend.
Chinese website Expreview.com has the skinny on Pitcairn, which will manifest in Radeon HD 7870 and two Radeon HD 7850 graphics cards with 1GB or 2GB of onboard memory. According to the leaked info, AMD's HD 7870 (Pitcairn XT) will feature 22 Core Next compute units, 1,408 stream processors, 88 texture units, 24 ROPs, and 2GB of GDDR5 on a 256-bit memory bus clocked at 1,375MHz (5,500 MHz effective). The GPU will be clocked at 950MHz.
Sitting one rung lower is the HD 7850 (Pitcairn Pro) with 20 CUs, 1,280 stream processors, 80 texture units, 24 ROPs, and 1GB or 2GB of GDDR5 memory clocked at 1,250MHz (also on a 256-bit bus). The GPU will run at 900MHz.
These three cards are expected to debut in March with prices ranging from around $220 to $300 (possibly lower in the U.S.), followed by a $360 Radeon HD 7890 sometime in the second quarter of 2012. According to Expreview, the 7890 will feature a different core than the other two and will possibly be a gimped version of Tahiti.
Image Credit: Expreview.com