GeForce GTX 295 vs Radeon HD 6850

Intro

Compare those specs to the Radeon HD 6850, which uses a 40 nm design. AMD has set the core frequency at 775 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this particular card. It features 960 SPUs along with 48 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850		127 Watts
GeForce GTX 295		289 Watts
	Difference: 162 Watts (128%)

Memory Bandwidth

The GeForce GTX 295 should in theory perform a lot faster than the Radeon HD 6850 overall. (explain)

GeForce GTX 295		223776 MB/sec
Radeon HD 6850		128000 MB/sec
	Difference: 95776 (75%)

Texel Rate

The GeForce GTX 295 will be much (more or less 148%) more effective at AF than the Radeon HD 6850. (explain)

GeForce GTX 295		92160 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 54960 (148%)

Pixel Rate

The GeForce GTX 295 will be a lot (approximately 30%) more effective at AA than the Radeon HD 6850, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon HD 6850		24800 Mpixels/sec
	Difference: 7456 (30%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the 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 texture map elements (texels) that can be processed per second. This number is calculated 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 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 that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.