Radeon R7 240 vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which comes with core clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon R9 M280X		75 Watts
	Difference: 45 Watts (150%)

Memory Bandwidth

In theory, the Radeon R9 M280X should perform quite a bit faster than the Radeon R7 240 overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 59200 (206%)

Texel Rate

The Radeon R9 M280X will be a lot (approximately 245%) better at texture filtering than the Radeon R7 240. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 35800 (245%)

Pixel Rate

The Radeon R9 M280X should be a lot (approximately 147%) better at anti-aliasing than the Radeon R7 240, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 8560 (147%)

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 max amount of data (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. 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.