GeForce GTX 260 216SP 55 nm vs Radeon R7 250

Intro

Compare those specs to the Radeon R7 250, which comes with a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1150 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 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 216SP 55 nm		171 Watts
	Difference: 106 Watts (163%)

Memory Bandwidth

The GeForce GTX 260 216SP 55 nm should theoretically be much faster than the Radeon R7 250 overall. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 38288 (52%)

Texel Rate

The GeForce GTX 260 216SP 55 nm is quite a bit (more or less 73%) better at anisotropic filtering than the Radeon R7 250. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 17472 (73%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 260 216SP 55 nm is the winner, by a large margin. (explain)

GeForce GTX 260 216SP 55 nm		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 max amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.