GeForce GTX 260 vs Radeon HD 5670

Intro

Compare all that to the Radeon HD 5670, which has core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 260		182 Watts
	Difference: 121 Watts (198%)

Memory Bandwidth

Performance-wise, the GeForce GTX 260 should in theory be quite a bit superior to the Radeon HD 5670 overall. (explain)

GeForce GTX 260		111888 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 47888 (75%)

Texel Rate

The GeForce GTX 260 should be a lot (approximately 138%) better at AF than the Radeon HD 5670. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 21364 (138%)

Pixel Rate

The GeForce GTX 260 should be a lot (about 160%) more effective at full screen anti-aliasing than the Radeon HD 5670, and also should be able to handle higher screen resolutions better. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 9928 (160%)

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 max amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated 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 filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.