Radeon HD 6950 vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which has clock speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 512 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6950		3240 points
Radeon HD 7750		2240 points
	Difference: 1000 (45%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 6950		200 Watts
	Difference: 145 Watts (264%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6950 should in theory be quite a bit superior to the Radeon HD 7750 in general. (explain)

Radeon HD 6950		160000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 88000 (122%)

Texel Rate

The Radeon HD 6950 is quite a bit (more or less 175%) faster with regards to anisotropic filtering than the Radeon HD 7750. (explain)

Radeon HD 6950		70400 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 44800 (175%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6950 is a better choice, by far. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 12800 (100%)

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 max amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the 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 better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.