Radeon HD 6750 vs Radeon HD 7950

Intro

Compare those specs to the Radeon HD 7950, which features a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 384-bit bus, and makes use of a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon HD 7950		200 Watts
	Difference: 114 Watts (133%)

Memory Bandwidth

Performance-wise, the Radeon HD 7950 should in theory be quite a bit superior to the Radeon HD 6750 in general. (explain)

Radeon HD 7950		240000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 176000 (275%)

Texel Rate

The Radeon HD 7950 is a lot (more or less 243%) better at texture filtering than the Radeon HD 6750. (explain)

Radeon HD 7950		89600 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 63500 (243%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7950 is superior to the Radeon HD 6750, by far. (explain)

Radeon HD 7950		25600 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 14000 (121%)

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 maximum amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics 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 chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.