GeForce GTX 480 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which comes with clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 480		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Performance-wise, the GeForce GTX 480 should theoretically be a small bit superior to the Radeon R9 M395X overall. (explain)

GeForce GTX 480		177408 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 17408 (11%)

Texel Rate

The Radeon R9 M395X will be a lot (about 120%) better at AF than the GeForce GTX 480. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 480		42000 Mtexels/sec
	Difference: 50544 (120%)

Pixel Rate

The GeForce GTX 480 should be much (approximately 45%) better at full screen anti-aliasing than the Radeon R9 M395X, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 10464 (45%)

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 max amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.