Radeon R7 250 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features a core clock speed of 750 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

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

Theoretically speaking, the Radeon R9 M295X is 139% quicker than the Radeon R7 250 in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon R9 M295X is much (more or less 300%) better at texture filtering than the Radeon R7 250. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M295X is the winner, 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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.