GeForce GTX 260 216SP 55 nm vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which comes with a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1150 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It features 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

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

Theoretically, the GeForce GTX 260 216SP 55 nm should perform much faster than the Radeon R7 250 in general. (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 should be much (approximately 73%) better at texture 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

The GeForce GTX 260 216SP 55 nm is much (more or less 102%) better at full screen anti-aliasing than the Radeon R7 250, and also able to handle higher resolutions without losing too much performance. (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: Bandwidth is the max amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.