GeForce GTX 460 1GB vs Geforce GTX 690

Intro

Compare all of that to the Geforce GTX 690, which has a GPU core clock speed of 915 MHz, and 2048 MB of GDDR5 memory set to run at 1502 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 1GB		160 Watts
Geforce GTX 690		300 Watts
	Difference: 140 Watts (88%)

Memory Bandwidth

Theoretically, the Geforce GTX 690 should be a lot faster than the GeForce GTX 460 1GB overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 460 1GB		115200 MB/sec
	Difference: 269312 (234%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 520%) better at texture filtering than the GeForce GTX 460 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 196440 (520%)

Pixel Rate

The Geforce GTX 690 should be much (approximately 171%) better at full screen anti-aliasing than the GeForce GTX 460 1GB, and should be able to handle higher screen resolutions more effectively. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 460 1GB		21600 Mpixels/sec
	Difference: 36960 (171%)

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 within a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the 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 speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.