Radeon R9 290X vs Radeon R9 M295X

Intro

Compare all of that to the Radeon R9 M295X, which comes with a core clock speed of 750 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 290X should theoretically be a lot faster than the Radeon R9 M295X in general. (explain)

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

Texel Rate

The Radeon R9 290X will be quite a bit (approximately 47%) faster with regards to AF than the Radeon R9 M295X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 44800 (47%)

Pixel Rate

The Radeon R9 290X will be a lot (about 113%) faster with regards to anti-aliasing than the Radeon R9 M295X, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 290X		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: Memory bandwidth is the largest amount of data (in units of 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 clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video 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 the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.