Radeon R9 290X vs Radeon R9 M290X

Intro

Compare those specifications to the Radeon R9 M290X, which features a clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is made up of 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
Radeon R9 290X		300 Watts
	Difference: 200 Watts (200%)

Memory Bandwidth

Performance-wise, the Radeon R9 290X should theoretically be quite a bit better than the Radeon R9 M290X in general. (explain)

Radeon R9 290X		320000 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 166400 (108%)

Texel Rate

The Radeon R9 290X is much (about 107%) faster with regards to texture filtering than the Radeon R9 M290X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 72800 (107%)

Pixel Rate

The Radeon R9 290X is a lot (about 88%) faster with regards to FSAA than the Radeon R9 M290X, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 24000 (88%)

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 information (counted in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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