GeForce GTX 460 (OEM) vs Radeon R9 280X

Intro

Compare that to the Radeon R9 280X, which comes with a GPU core clock speed of 850 MHz, and 3072 MB of GDDR5 memory running at 1500 MHz through a 384-bit bus. It also features 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
Radeon R9 280X		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

In theory, the Radeon R9 280X is 165% quicker than the GeForce GTX 460 (OEM) in general, due to its greater bandwidth. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 179200 (165%)

Texel Rate

The Radeon R9 280X is much (more or less 199%) better at AF than the GeForce GTX 460 (OEM). (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 72400 (199%)

Pixel Rate

The Radeon R9 280X should be much (about 31%) faster with regards to FSAA than the GeForce GTX 460 (OEM), and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 6400 (31%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.