Radeon HD 6750 1GB vs Radeon R9 290

Intro

Compare all that to the Radeon R9 290, which uses a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this specific model. It features 2560 SPUs as well as 160 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon R9 290		300 Watts
	Difference: 214 Watts (249%)

Memory Bandwidth

The Radeon R9 290 should in theory be a lot faster than the Radeon HD 6750 1GB overall. (explain)

Radeon R9 290		320000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 256000 (400%)

Texel Rate

The Radeon R9 290 should be a lot (about 390%) better at AF than the Radeon HD 6750 1GB. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 101900 (390%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 290 is the winner, and very much so. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 39600 (341%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one 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 the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.