GeForce GTX 650 vs Geforce GTX 690

Intro

Compare all of that to the Geforce GTX 690, which has GPU clock speed of 915 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 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 650		2263 points
	Difference: 10848 (479%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Geforce GTX 690		300 Watts
	Difference: 236 Watts (369%)

Memory Bandwidth

In theory, the Geforce GTX 690 will be 381% faster than the GeForce GTX 650 overall, because of its greater bandwidth. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 304512 (381%)

Texel Rate

The Geforce GTX 690 will be a lot (approximately 592%) faster with regards to AF than the GeForce GTX 650. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 200384 (592%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 690 is the winner, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 41632 (246%)

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 largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 are processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.