GeForce GTX 260 vs Radeon HD 7750

Intro

Compare those specifications to the Radeon HD 7750, which features core clock speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GTX 260		182 Watts
	Difference: 127 Watts (231%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 should be 55% faster than the Radeon HD 7750 overall, because of its higher bandwidth. (explain)

GeForce GTX 260		111888 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 39888 (55%)

Texel Rate

The GeForce GTX 260 will be quite a bit (approximately 44%) faster with regards to anisotropic filtering than the Radeon HD 7750. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 11264 (44%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 260 is a better choice, and very much so. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 3328 (26%)

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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.