GeForce GTX 590 vs Radeon R9 M265X

Intro

Compare that to the Radeon R9 M265X, which comes with GPU clock speed of 575 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 590 should theoretically perform a lot faster than the Radeon R9 M265X in general. (explain)

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

Texel Rate

The GeForce GTX 590 is a lot (approximately 238%) better at anisotropic filtering than the Radeon R9 M265X. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 590 is superior to the Radeon R9 M265X, and very much so. (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 max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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