Radeon HD 6750 1GB vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which comes with a clock frequency of 730 MHz and a DDR3 memory speed of 900 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 56 Watts (187%)

Memory Bandwidth

Theoretically, the Radeon HD 6750 1GB should be much faster than the Radeon R7 240 in general. (explain)

Radeon HD 6750 1GB		64000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 35200 (122%)

Texel Rate

The Radeon HD 6750 1GB will be a lot (about 79%) more effective at AF than the Radeon R7 240. (explain)

Radeon HD 6750 1GB		26100 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 11500 (79%)

Pixel Rate

The Radeon HD 6750 1GB is quite a bit (more or less 99%) faster with regards to anti-aliasing than the Radeon R7 240, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon HD 6750 1GB		11600 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 5760 (99%)

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 max amount of data (in units of MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.