Geforce GTX 690 vs Radeon R7 250X 2GB

Intro

Compare all of that to the Radeon R7 250X 2GB, which features core clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Geforce GTX 690		300 Watts
	Difference: 205 Watts (216%)

Memory Bandwidth

In theory, the Geforce GTX 690 should be a lot faster than the Radeon R7 250X 2GB in general. (explain)

Geforce GTX 690		384512 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 312512 (434%)

Texel Rate

The Geforce GTX 690 should be much (approximately 486%) better at AF than the Radeon R7 250X 2GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 194240 (486%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 690 is the winner, by far. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 42560 (266%)

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 max amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 are processed per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better 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 maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). 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 get to the maximum fill rate.