Radeon HD 7750 vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which comes with core 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 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon R9 M280X		75 Watts
	Difference: 20 Watts (36%)

Memory Bandwidth

The Radeon R9 M280X should theoretically perform a lot faster than the Radeon HD 7750 overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X is a lot (approximately 97%) faster with regards to anisotropic filtering than the Radeon HD 7750. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 24800 (97%)

Pixel Rate

The Radeon R9 M280X will be a small bit (about 13%) more effective at anti-aliasing than the Radeon HD 7750, and also capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 1600 (13%)

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 maximum amount of data (measured in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.