GeForce GTX 260 vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which features core clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 24 Texture Address Units 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 260		182 Watts
	Difference: 117 Watts (180%)

Memory Bandwidth

Theoretically, the GeForce GTX 260 should perform a lot faster than the Radeon R7 250 overall. (explain)

GeForce GTX 260		111888 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 38288 (52%)

Texel Rate

The GeForce GTX 260 will be a lot (approximately 54%) better at texture filtering than the Radeon R7 250. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 12864 (54%)

Pixel Rate

The GeForce GTX 260 will be much (approximately 102%) faster with regards to AA than the Radeon R7 250, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 8128 (102%)

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 information (in units of MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card 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 Render Output Units by the the core speed of the card. 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 rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.