Radeon HD 6750 vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which has a clock speed of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon R9 270X		180 Watts
	Difference: 94 Watts (109%)

Memory Bandwidth

Theoretically, the Radeon R9 270X should perform a lot faster than the Radeon HD 6750 overall. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 115200 (180%)

Texel Rate

The Radeon R9 270X will be a lot (about 207%) faster with regards to texture filtering than the Radeon HD 6750. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 53900 (207%)

Pixel Rate

The Radeon R9 270X is a lot (more or less 176%) faster with regards to AA than the Radeon HD 6750, and will be able to handle higher resolutions more effectively. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 20400 (176%)

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 data (counted in megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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