Radeon HD 6750 vs Radeon R9 M290X

Intro

Compare all that to the Radeon R9 M290X, which makes use of a 28 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM is set to run at a frequency of 1200 MHz on this particular card. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

As far as performance goes, the Radeon R9 M290X should in theory be quite a bit superior to the Radeon HD 6750 in general. (explain)

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

Texel Rate

The Radeon R9 M290X should be much (approximately 161%) better at AF 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 resolution 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 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: Memory bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.