Radeon HD 6750 vs Radeon R9 M290X

Intro

Compare those specs to the Radeon R9 M290X, which comes with GPU clock speed of 850 MHz, and 4096 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also features 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon R9 M290X		100 Watts
	Difference: 14 Watts (16%)

Memory Bandwidth

The Radeon R9 M290X should theoretically perform quite a bit faster than the Radeon HD 6750 overall. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon R9 M290X is a lot (approximately 161%) faster with regards to anisotropic filtering than the Radeon HD 6750. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 41900 (161%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M290X is superior to the Radeon HD 6750, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 15600 (134%)

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 largest amount of information (counted in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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