GeForce GTX 750 vs Radeon HD 5870

Intro

Compare all that to the Radeon HD 5870, which comes with clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 1600(320x5) SPUs as well as 80 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 5870		188 Watts
	Difference: 133 Watts (242%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be quite a bit faster than the GeForce GTX 750 in general. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 73600 (92%)

Texel Rate

The Radeon HD 5870 is a lot (about 108%) more effective at texture filtering than the GeForce GTX 750. (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 35360 (108%)

Pixel Rate

The Radeon HD 5870 is a lot (about 67%) more effective at full screen anti-aliasing than the GeForce GTX 750, and also able to handle higher screen resolutions more effectively. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 10880 (67%)

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 (counted in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.