GeForce GTX 480 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features a GPU core clock speed of 750 MHz, and 4096 MB of GDDR5 memory running at 1375 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 480		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

In theory, the GeForce GTX 480 should perform a little bit faster than the Radeon R9 M295X in general. (explain)

GeForce GTX 480		177408 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 1408 (1%)

Texel Rate

The Radeon R9 M295X should be much (about 129%) more effective at anisotropic filtering than the GeForce GTX 480. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 480		42000 Mtexels/sec
	Difference: 54000 (129%)

Pixel Rate

The GeForce GTX 480 is much (approximately 40%) faster with regards to full screen anti-aliasing than the Radeon R9 M295X, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 9600 (40%)

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 (measured in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.