GeForce GTX 460 (OEM) vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which has core clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 (OEM) should theoretically be a lot superior to the Radeon R9 M280X in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 20800 (24%)

Texel Rate

The Radeon R9 M280X should be quite a bit (more or less 38%) more effective at AF than the GeForce GTX 460 (OEM). (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 14000 (38%)

Pixel Rate

The GeForce GTX 460 (OEM) should be much (approximately 44%) more effective at AA than the Radeon R9 M280X, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 6400 (44%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.