GeForce GTX 590 vs Radeon R9 M390X

Intro

Compare those specifications to the Radeon R9 M390X, which uses a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
GeForce GTX 590		365 Watts
	Difference: 240 Watts (192%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 590 should be a lot faster than the Radeon R9 M390X overall. (explain)

GeForce GTX 590		328320 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 168320 (105%)

Texel Rate

The Radeon R9 M390X should be a little bit (more or less 19%) better at AF than the GeForce GTX 590. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce GTX 590		77696 Mtexels/sec
	Difference: 14848 (19%)

Pixel Rate

The GeForce GTX 590 will be much (more or less 152%) better at full screen anti-aliasing than the Radeon R9 M390X, and will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 35136 (152%)

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 data (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.