GeForce GTX 285 1GB vs Radeon HD 6950 2GB

Intro

Compare that to the Radeon HD 6950 2GB, which makes use of a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this specific model. It features 1408 SPUs along with 88 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB		200 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

In theory, the Radeon HD 6950 2GB will be 1% quicker than the GeForce GTX 285 1GB in general, due to its higher bandwidth. (explain)

Radeon HD 6950 2GB		160000 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 1024 (1%)

Texel Rate

The Radeon HD 6950 2GB will be much (more or less 36%) more effective at AF than the GeForce GTX 285 1GB. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 18560 (36%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6950 2GB is a better choice, by far. (explain)

Radeon HD 6950 2GB		25600 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 4864 (23%)

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 (measured in megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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