Radeon HD 6750 1GB vs Radeon HD 6970

Intro

Compare those specs to the Radeon HD 6970, which features a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also features 1536 SPUs, 96 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon HD 6970		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6970 should in theory be quite a bit better than the Radeon HD 6750 1GB in general. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 112000 (175%)

Texel Rate

The Radeon HD 6970 will be quite a bit (approximately 224%) better at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 58380 (224%)

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 6750 1GB		11600 Mpixels/sec
	Difference: 16560 (143%)

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 data (counted in MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.