GeForce GTX 590 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which features a GPU core clock speed of 575 MHz, and 2048 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 590 should perform quite a bit faster than the Radeon R9 M265X overall. (explain)

GeForce GTX 590		328320 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 256320 (356%)

Texel Rate

The GeForce GTX 590 is quite a bit (approximately 238%) more effective at texture filtering than the Radeon R9 M265X. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 54696 (238%)

Pixel Rate

The GeForce GTX 590 will be much (about 533%) better at AA than the Radeon R9 M265X, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 49072 (533%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.