Radeon R5 M255 vs Radeon R9 M295X

Intro

Compare all of that to the Radeon R9 M295X, which uses a 28 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory is set to run at a frequency of 1375 MHz on this model. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X should be a lot faster than the Radeon R5 M255 in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 160000 (1000%)

Texel Rate

The Radeon R9 M295X is quite a bit (more or less 411%) faster with regards to anisotropic filtering than the Radeon R5 M255. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 77200 (411%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M295X is superior to the Radeon R5 M255, and very much so. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 16480 (219%)

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 transferred over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.