GeForce GTX 460 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which comes with a clock frequency of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It features 2048 SPUs, 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 460		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

Theoretically, the Radeon R9 M395X should be a lot faster than the GeForce GTX 460 in general. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 73600 (85%)

Texel Rate

The Radeon R9 M395X will be much (approximately 145%) better at AF than the GeForce GTX 460. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 460		37800 Mtexels/sec
	Difference: 54744 (145%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M395X is the winner, and very much so. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 460		16200 Mpixels/sec
	Difference: 6936 (43%)

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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.