GeForce GTX 295 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which comes with core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 295		289 Watts
	Difference: 164 Watts (131%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 295 should in theory be a lot better than the Radeon R9 M295X in general. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 47776 (27%)

Texel Rate

The Radeon R9 M295X should be just a bit (about 4%) more effective at AF than the GeForce GTX 295. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 3840 (4%)

Pixel Rate

The GeForce GTX 295 is much (approximately 34%) more effective at full screen anti-aliasing than the Radeon R9 M295X, and capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 8256 (34%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the 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 most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.