GeForce GTX 460 SE vs Radeon R9 270

Intro

Compare all of that to the Radeon R9 270, which has GPU clock speed of 900 MHz, and 2048 MB of GDDR5 memory running at 1400 MHz through a 256-bit bus. It also is made up of 1280 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon R9 270, in theory, should be much faster than the GeForce GTX 460 SE in general. (explain)

Radeon R9 270		179200 MB/sec
GeForce GTX 460 SE		108800 MB/sec
	Difference: 70400 (65%)

Texel Rate

The Radeon R9 270 should be a lot (approximately 131%) better at anisotropic filtering than the GeForce GTX 460 SE. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 40800 (131%)

Pixel Rate

The Radeon R9 270 should be quite a bit (approximately 38%) faster with regards to FSAA than the GeForce GTX 460 SE, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce GTX 460 SE		20800 Mpixels/sec
	Difference: 8000 (38%)

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 max amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.