GeForce GTX 460 1GB vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which has GPU clock speed of 725 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 460 1GB should perform much faster than the Radeon R9 M270X overall. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 43200 (60%)

Texel Rate

The GeForce GTX 460 1GB is much (approximately 30%) more effective at AF than the Radeon R9 M270X. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 8800 (30%)

Pixel Rate

The GeForce GTX 460 1GB will be much (more or less 86%) more effective at anti-aliasing than the Radeon R9 M270X, and also should be able to handle higher screen resolutions better. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 10000 (86%)

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 (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.