GeForce GTX 460 1GB vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which has clock speeds of 725 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 460 1GB should in theory be quite a bit 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 should be a lot (approximately 30%) better at anisotropic filtering than the Radeon R9 M270X. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 1GB is a better choice, and very much so. (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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 processed per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.