GeForce GTX 260 Core 216 vs Radeon R5 M255

Intro

Compare those specs to the Radeon R5 M255, which uses a 28 nm design. AMD has clocked the core frequency at 940 MHz. The DDR3 memory works at a frequency of 1000 MHz on this card. It features 320 SPUs as well as 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 260 Core 216 should theoretically be quite a bit superior to 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 will be a lot (about 121%) more effective at anisotropic 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 a better choice, by a large margin. (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 information (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.