GeForce GTX 570 vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX 570		219 Watts
	Difference: 124 Watts (131%)

Memory Bandwidth

The GeForce GTX 570, in theory, should be quite a bit faster than the Radeon R7 250X 2GB in general. (explain)

GeForce GTX 570		152000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 80000 (111%)

Texel Rate

The GeForce GTX 570 will be just a bit (approximately 10%) faster with regards to texture filtering than the Radeon R7 250X 2GB. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 3920 (10%)

Pixel Rate

The GeForce GTX 570 is a lot (more or less 83%) better at AA than the Radeon R7 250X 2GB, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 13280 (83%)

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: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour 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 also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.