GeForce GTX 285 2GB vs Radeon R7 250

Intro

Compare all of that to the Radeon R7 250, which features clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs as well as 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 139 Watts (214%)

Memory Bandwidth

Theoretically, the GeForce GTX 285 2GB should perform much faster than the Radeon R7 250 in general. (explain)

GeForce GTX 285 2GB		158976 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 85376 (116%)

Texel Rate

The GeForce GTX 285 2GB will be much (approximately 116%) more effective at AF than the Radeon R7 250. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 27840 (116%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 285 2GB is the winner, and very much so. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 12736 (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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.