Radeon R7 250 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features a clock frequency of 750 MHz and a GDDR5 memory frequency of 1375 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon R9 M295X		125 Watts
	Difference: 60 Watts (92%)

Memory Bandwidth

The Radeon R9 M295X, in theory, should perform quite a bit faster than the Radeon R7 250 in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 102400 (139%)

Texel Rate

The Radeon R9 M295X will be a lot (about 300%) better at AF than the Radeon R7 250. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 72000 (300%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M295X is superior to the Radeon R7 250, and very much so. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 16000 (200%)

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 information (in units of MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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