GeForce GTX 970 vs Geforce GTX 690

Intro

Compare all of that to the Geforce GTX 690, which features a core clock speed of 915 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 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 970		10867 points
	Difference: 2244 (21%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
Geforce GTX 690		300 Watts
	Difference: 155 Watts (107%)

Memory Bandwidth

In theory, the Geforce GTX 690 will be 72% quicker than the GeForce GTX 970 overall, because of its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 970		224000 MB/sec
	Difference: 160512 (72%)

Texel Rate

The Geforce GTX 690 will be a lot (about 115%) more effective at AF than the GeForce GTX 970. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 970		109200 Mtexels/sec
	Difference: 125040 (115%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 970 is the winner, though not by far. (explain)

GeForce GTX 970		67200 Mpixels/sec
Geforce GTX 690		58560 Mpixels/sec
	Difference: 8640 (15%)

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 information (counted in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better 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 card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.