Geforce GTX 770 vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which uses a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this model. It features 720 SPUs along with 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 770		230 Watts
	Difference: 144 Watts (167%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 770 should theoretically be much better than the Radeon HD 6750 overall. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 160384 (251%)

Texel Rate

The Geforce GTX 770 is quite a bit (approximately 413%) faster with regards to AF than the Radeon HD 6750. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 107788 (413%)

Pixel Rate

The Geforce GTX 770 is a lot (more or less 189%) faster with regards to AA than the Radeon HD 6750, and also able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 21872 (189%)

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 across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 chip 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 amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.