GeForce GTX 560 Ti 448 vs Radeon R5 M255

Intro

Compare all of that to the Radeon R5 M255, which features GPU core speed of 940 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 64-bit bus. It also is comprised of 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 560 Ti 448, in theory, should perform quite a bit faster than the Radeon R5 M255 in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 128000 (800%)

Texel Rate

The GeForce GTX 560 Ti 448 is quite a bit (approximately 118%) better at texture filtering than the Radeon R5 M255. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 22192 (118%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti 448 is a better choice, by a large margin. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 21760 (289%)

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 maximum amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.