Radeon HD 6750 vs Radeon R9 290

Intro

Compare all that to the Radeon R9 290, which makes use of a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory works at a speed of 1250 MHz on this particular 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		86 Watts
Radeon R9 290		300 Watts
	Difference: 214 Watts (249%)

Memory Bandwidth

Performance-wise, the Radeon R9 290 should in theory be a lot better than the Radeon HD 6750 in general. (explain)

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

Texel Rate

The Radeon R9 290 should be a lot (more or less 390%) faster with regards to anisotropic filtering than the Radeon HD 6750. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 290 is a better choice, by far. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 6750		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 maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.