GeForce GTX 750 Ti vs Radeon HD 6950 2GB

Intro

Compare all of that to the Radeon HD 6950 2GB, which features a clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It features 1408 SPUs, 88 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
Radeon HD 6950 2GB		200 Watts
	Difference: 140 Watts (233%)

Memory Bandwidth

The Radeon HD 6950 2GB should in theory perform quite a bit faster than the GeForce GTX 750 Ti overall. (explain)

Radeon HD 6950 2GB		160000 MB/sec
GeForce GTX 750 Ti		86400 MB/sec
	Difference: 73600 (85%)

Texel Rate

The Radeon HD 6950 2GB will be much (approximately 73%) more effective at anisotropic filtering than the GeForce GTX 750 Ti. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 29600 (73%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6950 2GB is superior to the GeForce GTX 750 Ti, by a large margin. (explain)

Radeon HD 6950 2GB		25600 Mpixels/sec
GeForce GTX 750 Ti		16320 Mpixels/sec
	Difference: 9280 (57%)

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 information (in units of MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.