Details leaked: ATI Radeon 4800 gets 480 stream processors
* ATI Radeon HD 4850 - 650MHz/850MHz/1140MHz core/shader/memory clock speeds, 32 TMU, 16 ROP, 256MB/512MB GDDR3 or 512MB GDDR5
* ATI Radeon HD 4870 - 850MHz/1050MHz/1940MHz core/shader/memory clock speeds, 32 TMU, 16 ROP, 1GB GDDR5
* ATI Radeon HD 4870 X2 - unknown core/shader clock speeds, 2048MB GDDR5

TG Daily