Geforce GTX 680 vs Geforce GTX 690

Intro

Compare those specs to the Geforce GTX 690, which comes with clock speeds of 915 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 690		13111 points
Geforce GTX 680		7650 points
	Difference: 5461 (71%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680		195 Watts
Geforce GTX 690		300 Watts
	Difference: 105 Watts (54%)

Memory Bandwidth

The Geforce GTX 690 should theoretically be quite a bit faster than the Geforce GTX 680 overall. (explain)

Geforce GTX 690		384512 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 192256 (100%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 82%) better at texture filtering than the Geforce GTX 680. (explain)

Geforce GTX 690		234240 Mtexels/sec
Geforce GTX 680		128768 Mtexels/sec
	Difference: 105472 (82%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 690 is a better choice, and very much so. (explain)

Geforce GTX 690		58560 Mpixels/sec
Geforce GTX 680		32192 Mpixels/sec
	Difference: 26368 (82%)

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 largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher 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 that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.