Radeon R5 M255 vs Radeon R9 Nano

Intro

Compare those specs to the Radeon R9 Nano, which comes with clock speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM memory. It features 4096 SPUs as well as 256 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 Nano should theoretically be quite a bit superior to the Radeon R5 M255 overall. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 496000 (3100%)

Texel Rate

The Radeon R9 Nano should be a lot (approximately 1262%) more effective at texture filtering than the Radeon R5 M255. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 237200 (1262%)

Pixel Rate

The Radeon R9 Nano will be quite a bit (about 751%) more effective at full screen anti-aliasing than the Radeon R5 M255, and able to handle higher resolutions more effectively. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 56480 (751%)

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 MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied 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 this number, the better the graphics card will be at 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 that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.