Radeon R7 250X 2GB vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which has GPU clock speed of 750 MHz, and 4096 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon R9 M295X		125 Watts
	Difference: 30 Watts (32%)

Memory Bandwidth

Theoretically, the Radeon R9 M295X should be a lot faster than the Radeon R7 250X 2GB in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 104000 (144%)

Texel Rate

The Radeon R9 M295X will be quite a bit (more or less 140%) better at AF than the Radeon R7 250X 2GB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 56000 (140%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M295X is the winner, by a large margin. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 8000 (50%)

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 max amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, the result 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.