Radeon HD 6970 vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which has a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

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 6970		3470 points
Radeon HD 7750		2240 points
	Difference: 1230 (55%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 6970		250 Watts
	Difference: 195 Watts (355%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6970 should be 144% faster than the Radeon HD 7750 overall, because of its greater bandwidth. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 104000 (144%)

Texel Rate

The Radeon HD 6970 should be a lot (more or less 230%) better at texture filtering than the Radeon HD 7750. (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 58880 (230%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 6970 is a better choice, by far. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 15360 (120%)

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 largest amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 maximum fill rate.