Geforce GTX 670 vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this specific model. 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 670		170 Watts
	Difference: 75 Watts (79%)

Memory Bandwidth

In theory, the Geforce GTX 670 should perform much faster than the Radeon R7 250X 2GB in general. (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 quite a bit (more or less 156%) more effective at anisotropic 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 running with a high screen resolution is important to you, then the Geforce GTX 670 is the winner, by a large margin. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the 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 that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.