GeForce GTX 260 Core 216 vs Radeon R5 M255

Intro

Compare all of that to the Radeon R5 M255, which features a clock speed of 940 MHz and a DDR3 memory frequency of 1000 MHz. It also features a 64-bit bus, and uses a 28 nm design. It is comprised of 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 260 Core 216 should theoretically be much better than the Radeon R5 M255 in general. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 95888 (599%)

Texel Rate

The GeForce GTX 260 Core 216 is much (more or less 121%) faster with regards to texture filtering than the Radeon R5 M255. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 22672 (121%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 260 Core 216 is superior to the Radeon R5 M255, by far. (explain)

GeForce GTX 260 Core 216		16128 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 8608 (114%)

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 largest amount of data (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the 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 most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.