Radeon HD 6750 vs Radeon HD 6770

Intro

Compare those specs to the Radeon HD 6770, which comes with core speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 RAM. It features 800 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon HD 6770		108 Watts
	Difference: 22 Watts (26%)

Memory Bandwidth

Performance-wise, the Radeon HD 6770 should in theory be just a bit superior to the Radeon HD 6750 in general. (explain)

Radeon HD 6770		67200 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 3200 (5%)

Texel Rate

The Radeon HD 6770 should be a lot (approximately 38%) more effective at anisotropic filtering than the Radeon HD 6750. (explain)

Radeon HD 6770		36000 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 9900 (38%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 is superior to the Radeon HD 6750, by far. (explain)

Radeon HD 6770		14400 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 2800 (24%)

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 (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.