Radeon HD 6750 vs Radeon R9 380 2G

Intro

Compare all of that to the Radeon R9 380 2G, which comes with clock speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units 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 380 2G		190 Watts
	Difference: 104 Watts (121%)

Memory Bandwidth

In theory, the Radeon R9 380 2G is 185% quicker than the Radeon HD 6750 overall, because of its higher bandwidth. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 118400 (185%)

Texel Rate

The Radeon R9 380 2G will be quite a bit (about 316%) better at anisotropic filtering than the Radeon HD 6750. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 82540 (316%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 380 2G is the winner, by a large margin. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 19440 (168%)

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 (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.