GeForce GTX 590 vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which comes with a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX 590		365 Watts
	Difference: 270 Watts (284%)

Memory Bandwidth

In theory, the GeForce GTX 590 is 356% faster than the Radeon R7 250X 2GB overall, due to its higher data rate. (explain)

GeForce GTX 590		328320 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 256320 (356%)

Texel Rate

The GeForce GTX 590 will be a lot (about 94%) better at AF than the Radeon R7 250X 2GB. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 37696 (94%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 590 is the winner, by a large margin. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 42272 (264%)

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: Bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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