GeForce GTX 285 2GB vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which features core speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 285 2GB should in theory be quite a bit superior to the Radeon R9 M265X in general. (explain)

GeForce GTX 285 2GB		158976 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 86976 (121%)

Texel Rate

The GeForce GTX 285 2GB is quite a bit (about 125%) more effective at AF than the Radeon R9 M265X. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 28840 (125%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 285 2GB is the winner, by far. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 11536 (125%)

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 data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, 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 can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.