Geforce GTX 680 vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which features core clock speeds of 915 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 128 Texture Address Units 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 in theory perform much faster than the Geforce GTX 680 in general. (explain)

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

Texel Rate

The Geforce GTX 690 should be much (about 82%) more effective 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

The Geforce GTX 690 should be much (more or less 82%) faster with regards to AA than the Geforce GTX 680, and also capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video 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 that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.