GeForce GTX 660 vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which has GPU core speed of 915 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

The Geforce GTX 690 is much (more or less 149%) more effective at full screen anti-aliasing than the GeForce GTX 660, and also should be able to handle higher screen resolutions while still performing well. (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 max amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.