GeForce GTX 285 1GB vs Radeon R5 M255

Intro

Compare those specs to the Radeon R5 M255, which makes use of a 28 nm design. AMD has clocked the core frequency at 940 MHz. The DDR3 RAM works at a frequency of 1000 MHz on this particular card. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should be 894% faster than the Radeon R5 M255 in general, because of its higher data rate. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 142976 (894%)

Texel Rate

The GeForce GTX 285 1GB is a lot (about 176%) better at anisotropic filtering than the Radeon R5 M255. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 33040 (176%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 285 1GB is superior to the Radeon R5 M255, and very much so. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 13216 (176%)

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 information (in units of MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.