Geforce GTX 780 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 along with 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 780		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

In theory, the Geforce GTX 780 is 301% faster than the Radeon R7 250X 2GB in general, due to its higher data rate. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The Geforce GTX 780 is much (approximately 314%) faster with regards to texture filtering than the Radeon R7 250X 2GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 125696 (314%)

Pixel Rate

The Geforce GTX 780 should be much (more or less 159%) better at FSAA than the Radeon R7 250X 2GB, and should be capable of handling higher screen resolutions more effectively. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 25424 (159%)

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 max amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.