Geforce GTX 770 vs Radeon HD 6750 1GB

Intro

Compare all that to the Radeon HD 6750 1GB, which features GPU clock speed of 725 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also features 720 SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Geforce GTX 770		230 Watts
	Difference: 144 Watts (167%)

Memory Bandwidth

The Geforce GTX 770 should in theory be quite a bit faster than the Radeon HD 6750 1GB in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 160384 (251%)

Texel Rate

The Geforce GTX 770 is quite a bit (more or less 413%) more effective at texture filtering than the Radeon HD 6750 1GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 107788 (413%)

Pixel Rate

The Geforce GTX 770 is quite a bit (more or less 189%) more effective at anti-aliasing than the Radeon HD 6750 1GB, and also capable of handling higher screen resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6750 1GB		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 maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. 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, HDR and higher screen resolutions.

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

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