Radeon R9 290 vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which has core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
Radeon R9 290		300 Watts
	Difference: 175 Watts (140%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 290 should be 82% faster than the Radeon R9 M295X in general, due to its greater data rate. (explain)

Radeon R9 290		320000 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 144000 (82%)

Texel Rate

The Radeon R9 290 should be quite a bit (more or less 33%) more effective at anisotropic filtering than the Radeon R9 M295X. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 32000 (33%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 290 is the winner, by a large margin. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 27200 (113%)

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 largest amount of data (in units of MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on 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.