GeForce GTX 460 (OEM) vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features 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 Texture Address Units 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 460 (OEM)		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

In theory, the Radeon R9 M295X should be 62% faster than the GeForce GTX 460 (OEM) in general, because of its higher bandwidth. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 67200 (62%)

Texel Rate

The Radeon R9 M295X should be quite a bit (about 164%) more effective at anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 59600 (164%)

Pixel Rate

The Radeon R9 M295X is just a bit (more or less 15%) better at FSAA than the GeForce GTX 460 (OEM), and also able to handle higher resolutions more effectively. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 3200 (15%)

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 maximum amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.