Geforce GTX 770 vs Radeon HD 6750

Intro

Compare those specifications to the Radeon HD 6750, which comes with a core clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It features 720 SPUs, 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

Theoretically, the Geforce GTX 770 should be a lot faster 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 should be a lot (about 413%) better at anisotropic filtering 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 will be much (more or less 189%) more effective at full screen anti-aliasing than the Radeon HD 6750, and also will be able to handle higher 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 max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.