Geforce GTX 670 vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, 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 670		170 Watts
	Difference: 75 Watts (79%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 will be 167% quicker than the Radeon R7 250X 2GB overall, due to its higher bandwidth. (explain)

Geforce GTX 670		192000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 120000 (167%)

Texel Rate

The Geforce GTX 670 will be much (about 156%) better at texture filtering than the Radeon R7 250X 2GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 62480 (156%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 670 is the winner, by far. (explain)

Geforce GTX 670		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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.