Item ATI R500 ATI Radeon X300 ATI Radeon X600 ATI Radeon X800
Release2006-H1 2004-06-01 2004-06-01 2004-05-04
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
Transistors 160 M
Price < $100 < $200 $399 - $499
Ops/s
Pipelines 48 4 4 12-16
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
Type Desktop Desktop Desktop Desktop
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
DirectX 9.0c, 10 9.0b 9.0b 9.0b
Textures
Core R500 RV370 RV380 Loki
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
PCI Express
 

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.

2004-06-01 ATI Radeon X600 Mainstream ATI graphics chip very similar to RV360 but with added PCI Express support. Formerly known as RV380.

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.