In terms of overall gaming performance, the graphical capabilities of the AMD Radeon X1950 Pro are significantly better than the AMD Radeon X800 XT.
The Radeon X1950 Pro was released over a year more recently than the Radeon X800 XT, and so the Radeon X1950 Pro is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the Radeon X800 XT.
The Radeon X1950 Pro has 256 MB more video memory than the Radeon X800 XT, so is likely to be slightly better at displaying game textures at higher resolutions. However, overall, the Radeon X800 XT has superior memory performance.
The Radeon X800 XT has 19.8 GB/sec greater memory bandwidth than the Radeon X1950 Pro, which means that the memory performance of the Radeon X800 XT is slightly better than the Radeon X1950 Pro.
The Radeon X800 XT has 16 Shader Processing Units and the Radeon X1950 Pro has 36. However, the actual shader performance of the Radeon X800 XT is 5 and the actual shader performance of the Radeon X1950 Pro is 13. The Radeon X1950 Pro having 8 better shader performance is not particularly notable, as altogether the Radeon X800 XT performs better when taking into account other relevant data.
The Radeon X1950 Pro requires 66 Watts to run but there is no entry for the Radeon X800 XT. We would recommend a PSU with at least 420 Watts for the Radeon X1950 Pro, but we do not have a recommended PSU wattage for the Radeon X800 XT.
The Radeon X800 'R430'-based 110 nanometer series was introduced at the end of 2004 along with ATI's new X850 cards. The X800 was designed to replace the position X700 XT failed to secure, with 12 pipelines and a 256-bit RAM bus. The card more than surpassed the 6600GT with performance similar to that of the GeForce 6800. A close relative, the new X800 XL, was positioned to dethrone NVIDIA's GeForce 6800 GT with higher memory speeds and a full 16 pipelines to boost performance. R430 was unable to reach high clock speeds, being mainly designed to reduce the cost per GPU, and so a new top-of-the-line core was still needed. The new high-end R4x0-generation arrived with the X850 series, equipped with various core tweaks for slightly higher performance than the 'R420'-based X800 series. The 'R480'-based X850 line was available in 3 forms: the X850 Pro, the X850 XT, and the X850 XT Platinum Edition, and was built on the reliable high-performance 130 nm Low-K process.
Radeon X1950 Pro is a high-end GPU based on the 80nm variant of the R500 architecture.
It's based on the R570 Core and offers 36 Pixel Shaders, 12 TMUs and 12 ROPs, on a 256-bit of standard GDDR3. The central unit runs at 575MHz and the memory clock operates at up to 690MHz.
Its therefore a an overclocked Radeon X1950 GT and should perform slightly better.
Most of today's games might be playable at medium settings although the low preset will have to suffice on some. As it's not based on a Shader-Unified architecture, both DirectX 10 & 11 games aren't supported.