GeForce GTX 285 2GB vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 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		95 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 109 Watts (115%)

Memory Bandwidth

In theory, the GeForce GTX 285 2GB is 121% quicker than the Radeon R7 250X in general, because of its greater data rate. (explain)

GeForce GTX 285 2GB		158976 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 86976 (121%)

Texel Rate

The GeForce GTX 285 2GB should be a lot (approximately 30%) better at anisotropic filtering than the Radeon R7 250X. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 11840 (30%)

Pixel Rate

The GeForce GTX 285 2GB is much (approximately 30%) more effective at FSAA than the Radeon R7 250X, and also should be capable of handling higher resolutions better. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 4736 (30%)

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 largest amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.