GeForce GTX 980 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 running at 1000 MHz through a 128-bit bus. It also is comprised of 720 SPUs, 36 TAUs, 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 980		165 Watts
	Difference: 79 Watts (92%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980 should theoretically be much superior to the Radeon HD 6750 overall. (explain)

GeForce GTX 980		224000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 160000 (250%)

Texel Rate

The GeForce GTX 980 is a lot (about 452%) better at AF than the Radeon HD 6750. (explain)

GeForce GTX 980		144128 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 118028 (452%)

Pixel Rate

The GeForce GTX 980 should be a lot (about 521%) faster with regards to FSAA than the Radeon HD 6750, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 980		72064 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 60464 (521%)

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 information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.