GeForce GTX 650 vs Radeon HD 6750 1GB

Intro

Compare those specs to the Radeon HD 6750 1GB, which has GPU clock speed of 725 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 720 Stream Processors, 36 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 22 Watts (34%)

Memory Bandwidth

In theory, the GeForce GTX 650 is 25% faster than the Radeon HD 6750 1GB in general, because of its higher data rate. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 16000 (25%)

Texel Rate

The GeForce GTX 650 will be much (about 30%) better at AF than the Radeon HD 6750 1GB. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 7756 (30%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 is superior to the Radeon HD 6750 1GB, by far. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 5328 (46%)

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 (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.