GeForce GTX 970 vs Radeon HD 6750

Intro

Compare those specifications to the Radeon HD 6750, which has GPU core speed of 725 MHz, and 512 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is comprised of 720 Stream Processors, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce GTX 970		145 Watts
	Difference: 59 Watts (69%)

Memory Bandwidth

The GeForce GTX 970, in theory, should be quite a bit faster than the Radeon HD 6750 overall. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 160000 (250%)

Texel Rate

The GeForce GTX 970 should be much (more or less 318%) faster with regards to anisotropic filtering than the Radeon HD 6750. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 83100 (318%)

Pixel Rate

The GeForce GTX 970 will be much (more or less 479%) better at anti-aliasing than the Radeon HD 6750, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 55600 (479%)

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 largest amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high 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 clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.