GeForce GTX 295 vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which has core speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX 295		289 Watts
	Difference: 214 Watts (285%)

Memory Bandwidth

Performance-wise, the GeForce GTX 295 should theoretically be much better than the Radeon R9 M280X in general. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 135776 (154%)

Texel Rate

The GeForce GTX 295 is much (more or less 83%) better at texture filtering than the Radeon R9 M280X. (explain)

GeForce GTX 295		92160 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 41760 (83%)

Pixel Rate

The GeForce GTX 295 is much (about 124%) better at full screen anti-aliasing than the Radeon R9 M280X, and also able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 17856 (124%)

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: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one 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 - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.