Geforce GTX 690 vs Radeon HD 6750 1GB

Intro

Compare those specifications to the Radeon HD 6750 1GB, which has core clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 720 SPUs along with 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Geforce GTX 690		300 Watts
	Difference: 214 Watts (249%)

Memory Bandwidth

In theory, the Geforce GTX 690 is 501% quicker than the Radeon HD 6750 1GB in general, due to its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 320512 (501%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 797%) more effective at AF than the Radeon HD 6750 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 208140 (797%)

Pixel Rate

The Geforce GTX 690 should be quite a bit (more or less 405%) more effective at FSAA than the Radeon HD 6750 1GB, and able to handle higher resolutions without slowing down too much. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 46960 (405%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.