GeForce 8800 GTS (G92) vs GeForce GTS 250 512MB

Intro

Compare all of that to the GeForce GTS 250 512MB, which comes with core clock speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 512MB should perform a small bit faster than the GeForce 8800 GTS (G92) overall. (explain)

GeForce GTS 250 512MB		70400 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 8320 (13%)

Texel Rate

The GeForce GTS 250 512MB should be a small bit (about 14%) better at texture filtering than the GeForce 8800 GTS (G92). (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 5632 (14%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTS 250 512MB is a better choice, but it probably won't make a huge difference. (explain)

GeForce GTS 250 512MB		11808 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 1408 (14%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.