ATI and Nvidia's Same-Day Mega-Launch Mayhem

ATI's Midrange Rebuttal: Radeon X1800GTO

As stated earlier, ATI did not want to lie down when they had the opportunity to take a shot at the midrange newcomer. In response to the GeForce 7600GT, ATI has unleashed the X1800GTO. This new chip is like their previous GTO classification chips. Like the Radeon X800GTO, the X1800GTO is designed around a scaled down version of an existing chip. In this instance, it uses the R520.

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ATI Radeon X1900, X1800, & X1600 Specifications
Row 0 - Cell 0 X1900XTXX1900XTX1800XTX1800GTOX1600XT
Process Technology90nm90nm90nm90nm90nm
Number of Transistors384M384M321M321M157M
Core Clocks (Vertex, Core) in MHz650/650625/625625/625470/430440/400
Memory Clock (MHz / data rate)775/1550725/1450750/1500500/1000690/1380
Vertex Shaders (#)88888
Pixel Shaders (#)4848161212
ROPs (#)1616161616
Texture units161616164
Frame Buffer Size512 MB256 MB512 MB256 MB256 MB
Memory Bandwidth (GB/sec)49.646.4483244.16
Vertices/Second (Millions)130012501300940880
Pixel Fill Rate (# ROPs x clk) in Billions/sec10.
Texture Fill Rate (# Texture units x clk) in Billions/sec41.640107.5228.16
RAMDACs400 MHz400 MHz400 MHz400 MHz400 MHz
Bus TechnologyPCI ExpressPCI ExpressPCI ExpressPCI ExpressPCI Express