GeForce GTX 260 216SP 55 nm vs Radeon R7 250X

Intro

Compare all of that to the Radeon R7 250X, which comes with GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 76 Watts (80%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 260 216SP 55 nm should theoretically be quite a bit superior to the Radeon R7 250X in general. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 39888 (55%)

Texel Rate

The GeForce GTX 260 216SP 55 nm will be a small bit (more or less 4%) more effective at texture filtering than the Radeon R7 250X. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 1472 (4%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm should be a little bit (approximately 1%) better at FSAA than the Radeon R7 250X, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 128 (1%)

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 max amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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