Radeon R5 M255 vs Radeon R7 250

Intro

Compare those specs to the Radeon R7 250, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1150 MHz. It also features a 128-bit bus, and uses a 28 nm design. It features 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 should perform much faster than the Radeon R5 M255 in general. (explain)

Radeon R7 250		73600 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 57600 (360%)

Texel Rate

The Radeon R7 250 should be quite a bit (about 28%) better at texture filtering than the Radeon R5 M255. (explain)

Radeon R7 250		24000 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 5200 (28%)

Pixel Rate

The Radeon R7 250 should be a little bit (approximately 6%) more effective at FSAA than the Radeon R5 M255, and also able to handle higher resolutions without slowing down too much. (explain)

Radeon R7 250		8000 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 480 (6%)

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 largest amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 applied per second. This is worked out by multiplying the total texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of 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 Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.