ATi R420 and R423 specifications

Posted on Saturday, Feb 14 2004 @ 00:34 CET by Thomas De Maesschalck
AnandTech stumbled upon a week-old roadmap from ATi and published all the information in a nice article.
ATI's entire roadmap revolves around the transition to PCI Express, which ATI is particularly happy with since they will be providing native PCI Express GPUs from the get-go. The difference between a native PCI Express GPU and a "bridge" solution is that the latter has a little translator that takes PCI Express interface commands and converts them to AGP interface commands which are then sent off to the GPU. Obviously a bridge solution isn't very elegant and it isn't desirable from any standpoint other than a time-to-market one as it's always quicker and easier to have one GPU that can talk to any interface. Eventually no GPUs will have this silly PCI Express bridge, but at the start ATI is happy to announce that all of their GPUs will be "bridge-free."

In order to accomplish a bridge-free roadmap, ATI has to have two versions of every GPU: a PCIe and an AGP version (or an AGP substitute). Keep this in mind as we look at the GPUs due out in '04 since you'll be seeing two per market segment, one AGP and one PCIe.

It's also worth noting that all of ATI's GPUs will be available in both PCIe and AGP flavors throughout 2004.

2004 ATI Enthusiast GPU Roadmap

Name

Radeon 9800 XT
N/A
N/A
N/A
Chipset
R360
R420
R423
R480
GPU Clock
412MHz
~500MHz
~500MHz
???
Memory Clock
730MHz
1.0GHz
1.0GHz
???
Memory Width
256-bit
256-bit
256-bit
???
Process
0.15-micron
0.13-micron
0.13-micron
???
Memory Type
GDDR2
GDDR3
GDDR3
???
Pipeline
8
8
8
???
Vertex Shaders
4
6
6
???
Transistor Count
110Mil
160Mil
160Mil
???
Interface
AGP
AGP
PCI-Express
???
Availability
Now
Q2'04
Q2'04
H2'04

More information over at AnandTech.


About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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