GeForce GTX 460 (OEM) vs Radeon R5 M255

Intro

Compare those specs to the Radeon R5 M255, which has a GPU core clock speed of 940 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 64-bit bus. It also is made up of 320 Stream Processors, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 460 (OEM) should perform a lot faster than the Radeon R5 M255 overall. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 92800 (580%)

Texel Rate

The GeForce GTX 460 (OEM) will be much (about 94%) better at anisotropic filtering than the Radeon R5 M255. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 17600 (94%)

Pixel Rate

The GeForce GTX 460 (OEM) should be quite a bit (about 177%) better at AA than the Radeon R5 M255, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 13280 (177%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are processed per second. This figure 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. 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 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.