ATI Radeon R400 PCIe (X7xx,X8xx,X12xx) series chart

model Interface max core clock (MHz) max memory (Mb) max memory clock (Mhz) max Fillrate (MT/s) memory bus type memory bus width (bit)
Radeon Xpress 1250 IGP (based on X700) onboard PCIe 500 512 (HM) System Memory 2000 System Memory (DDR2) 128
Radeon X1270 IGP (based on X700) onboard PCIe 400 1024 (local frame buffer + HM) System Memory 1600 System Memory + local frame buffer (DDR2) 128
Radeon X1250 IGP (based on X700) onboard PCIe 400 1024 (HM) System Memory 1600 System Memory (DDR2) 128
Radeon X1200 IGP (based on X700) onboard PCIe 350 1024 (HM) System Memory 1400 System Memory (DDR2) 128
Radeon 2100 IGP onboard PCIe 1024 (HM) System Memory System Memory (DDR2) 128
Radeon X700 PCIe x16 400 128, 256 350 3200 DDR, GDDR2, GDDR3 128
Radeon X700 Pro PCIe x16 425 128, 256 430 3400 GDDR3 128
Radeon X700 XT PCIe x16 475 128 525 3800 GDDR3 128
Radeon X800 SE PCIe x16 425 128 350 3400 DDR, GDDR2, GDDR3 256
Radeon X800 GT 128 PCIe x16 400 128 490 3200 DDR, GDDR2, GDDR3 128
Radeon X800 GT 256 PCIe x16 475 256 490 3800 GDDR3 256
Radeon X800 GTO 128 PCIe x16 400 128 350 4800 DDR, GDDR2, GDDR3 256
Radeon X800 PCIe x16 392 128, 256 350 4704 DDR, GDDR2, GDDR3 256
Radeon X800 GTO 256 PCIe x16 400 256 490 4800 GDDR3 256
Radeon X800 GTO PCIe x16 400 256 490 6400 GDDR3 256
Radeon X800 GTO-16 PCIe x16 400 256 490 6400 GDDR3 256
Radeon X800 Pro PCIe x16 475 256 450 5700 GDDR3 256
Radeon X800 Pro VIVO PCIe x16 900 GDDR3 256
AIW X800 XL PCIe 16x 400 256 490 6400 GDDR3 256
Radeon X800 XL PCIe x16 400 256, 512 500 6400 GDDR3 256
Radeon X800 XT PCIe x16 500 256 500 8000 GDDR3 256
Radeon X800 XT VIVO PCIe x16 500 256 500 8000 GDDR3 256
Radeon X800 XT PE PCIe x16 520 256 560 8320 GDDR3 256
Radeon X850 Pro PCIe x16 520 256 540 6240 GDDR3 256
Radeon X850 XT PCIe x16 520 256 540 8320 GDDR3 256
Radeon X850 XT PE PCIe x16 540 256 590 8640 GDDR3 256