Radeon HD 6750 vs Radeon R9 380 2G

Intro

Compare all that to the Radeon R9 380 2G, which uses a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 RAM is set to run at a frequency of 1425 MHz on this particular model. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

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 should be 185% faster than the Radeon HD 6750 overall, due to its greater 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 is quite a bit (approximately 316%) better at texture 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 lots of anti-aliasing is important to you, then the Radeon R9 380 2G is superior to the Radeon HD 6750, by far. (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 max amount of data (in units of MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 fill 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.