GeForce GTX 260 vs Radeon HD 7750

Intro

Compare that to the Radeon HD 7750, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 512 Stream Processors, 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, the GeForce GTX 260 should be a lot faster than the Radeon HD 7750 in general. (explain)

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

Texel Rate

The GeForce GTX 260 should be a lot (approximately 44%) more effective at texture filtering than the Radeon HD 7750. (explain)

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

Pixel Rate

The GeForce GTX 260 is a lot (more or less 26%) faster with regards to AA than the Radeon HD 7750, and will be capable of handling higher resolutions more effectively. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.