GeForce GTX 950 vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which features a clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon R7 250X 2GB		95 Watts
	Difference: 5 Watts (6%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 950 should be much faster than the Radeon R7 250X 2GB overall. (explain)

GeForce GTX 950		105728 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 33728 (47%)

Texel Rate

The GeForce GTX 950 should be much (about 23%) faster with regards to texture filtering than the Radeon R7 250X 2GB. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 9152 (23%)

Pixel Rate

The GeForce GTX 950 should be a lot (approximately 105%) better at full screen anti-aliasing than the Radeon R7 250X 2GB, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 16768 (105%)

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 (counted in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.