|Item||ATI R500||ATI Radeon X300||ATI Radeon X600||ATI Radeon X800|
|Die size||~257 mm2|
|Process||90 nm||110 nm||130 nm||130 nm low-k|
|Core speed||325 MHz||400 - 500 MHz||475 - 520 MHz|
|Price||< $100||< $200||$399 - $499|
|Memory||DDR-3||64/128 bit, 400 MHz||600 - 740 MHz DDR 128 bit||DDR450, 256 bit DDR-II, GDDR2, GDDR3 0.9 - 1.12 GHz|
|AGP||PCI Express||AGP8X, PCI-Express||PCI Express||AGP8X, PCI-Express|
|Fill rate||1.3 Gpix/s, 1.3 Gtex/s||1.6 - 2.0 Gpix/s, 1.6 - 2.0 Gtex/s||5.7-8.3 Gpix/s, 5.7-8.3 Gtex/s|
|RAMDAC||2x400 MHz + DVI 1.0|
|Triangles/s||163 M||225 - 250 M||475-520 M|
|Vertex shaders||3.0||2 x 2.0||2 x 2.0||6 x 2.0|
|Pixel shaders||3.0||4 x 2.0||4 x 2.0||16 x 2.0|
2006-H1 ATI R500
High end ATI graphics chip for XBox2 built in a 90 nm process. Part of a new generation, comparable to R600 for the PC.
Early on reported to "have 10 times higher geometry and 4 times higher pixel performance compared to the RADEON X800 XT" (believe it if you want to).
May support WGF and Pixel and Vertex shaders 3.0 with 128 bit precision. Also known as Xenos.
2004-06-01 ATI Radeon X300 Mainstream graphics chip made in a 110 nm process. Very similar to RV380 except for lower clock speeds. Includes PCI Express support. The AGP version is called RV351, while X300 was formerly known as RV370. A version supporting Hyper Memory (sharing of primary RAM over PCIe, similar to nVidia's TurboCache) is planned for early 2005.
2004-05-04 ATI Radeon X800
New high end graphics chip succeeding the R350/R360 based on a completely new design also known as project Loki. Was to be shown at Comdex in November-03, but was only shown to NDA-signing people on CeBIT-04 and launched to the rest of us in May. Was earlier said to support unified DX 9.0c and Pixel and Vertex Shaders 3.0, but only DirectX 9.0b is supported.
The R420 is a simplified version of the R400 (now R500) to get a new high-end chip out quicker. R420 still uses 24 bit precision (96 bit in total) but adds 3Dc compression.
Native PCI-Express support shows up in the R423 (X800 PCI-E), formely known as X880 on June 1st.
Two versions are launched: The X800 Pro includes 12 pipelines with availability now, while the X800 XT uses 16 and ships on May 21st. A low cost X800 SE with only 8 pipelines is also planned. Previously known as R420.