GeForce GTX 750 vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which has a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is made up of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 6750		86 Watts
	Difference: 31 Watts (56%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 750 is 25% faster than the Radeon HD 6750 in general, due to its higher bandwidth. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 16000 (25%)

Texel Rate

The GeForce GTX 750 should be quite a bit (more or less 25%) more effective at AF than the Radeon HD 6750. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 6540 (25%)

Pixel Rate

The GeForce GTX 750 is a lot (about 41%) more effective at full screen anti-aliasing than the Radeon HD 6750, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 4720 (41%)

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 information (measured in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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 max fill rate.