Geforce GTX 770 vs Radeon HD 6950 2GB

Intro

Compare those specifications to the Radeon HD 6950 2GB, which has GPU core speed of 800 MHz, and 2048 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is made up of 1408 SPUs, 88 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB		200 Watts
Geforce GTX 770		230 Watts
	Difference: 30 Watts (15%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 770 should theoretically be a lot better than the Radeon HD 6950 2GB in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6950 2GB		160000 MB/sec
	Difference: 64384 (40%)

Texel Rate

The Geforce GTX 770 will be a lot (approximately 90%) better at anisotropic filtering than the Radeon HD 6950 2GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6950 2GB		70400 Mtexels/sec
	Difference: 63488 (90%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 770 is superior to the Radeon HD 6950 2GB, by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6950 2GB		25600 Mpixels/sec
	Difference: 7872 (31%)

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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.