Radeon HD 5770 vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which features clock speeds of 725 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 memory. It features 720 SPUs as well as 36 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon HD 5770		108 Watts
	Difference: 22 Watts (26%)

Memory Bandwidth

Performance-wise, the Radeon HD 5770 should theoretically be just a bit superior to the Radeon HD 6750 overall. (explain)

Radeon HD 5770		76800 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 12800 (20%)

Texel Rate

The Radeon HD 5770 should be a lot (approximately 30%) more effective at texture filtering than the Radeon HD 6750. (explain)

Radeon HD 5770		34000 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 7900 (30%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5770 is superior to the Radeon HD 6750, but it probably won't make a huge difference. (explain)

Radeon HD 5770		13600 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 2000 (17%)

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 max amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.