Geforce GTX 690 vs Radeon HD 6750 1GB

Intro

Compare all that to the Radeon HD 6750 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this particular card. It features 720 SPUs along with 36 Texture Address Units and 16 ROPs.

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

As far as performance goes, the Geforce GTX 690 should theoretically be quite a bit better than the Radeon HD 6750 1GB in general. (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 much (more or less 797%) more effective at texture filtering 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

If running with a high screen resolution is important to you, then the Geforce GTX 690 is the winner, and very much so. (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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs 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 rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.