GeForce GTX 660 vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which features GPU clock speed of 915 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also features 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

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 660		5063 points
	Difference: 8048 (159%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
Geforce GTX 690		300 Watts
	Difference: 160 Watts (114%)

Memory Bandwidth

In theory, the Geforce GTX 690 should be 167% quicker than the GeForce GTX 660 in general, due to its higher data rate. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 240320 (167%)

Texel Rate

The Geforce GTX 690 will be much (approximately 199%) more effective at anisotropic filtering than the GeForce GTX 660. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 155840 (199%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 690 is superior to the GeForce GTX 660, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 35040 (149%)

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 maximum amount of data (in units of MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.