Radeon HD 7750 vs Radeon R9 M290X

Intro

Compare all that to the Radeon R9 M290X, which has a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon R9 M290X		100 Watts
	Difference: 45 Watts (82%)

Memory Bandwidth

Theoretically, the Radeon R9 M290X should perform quite a bit faster than the Radeon HD 7750 overall. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 81600 (113%)

Texel Rate

The Radeon R9 M290X should be much (approximately 166%) more effective at anisotropic filtering than the Radeon HD 7750. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 42400 (166%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M290X is a better choice, by a large margin. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 14400 (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 max amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 are applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.