GeForce GTX 460 SE vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which has core speeds of 915 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 SE		150 Watts
Geforce GTX 690		300 Watts
	Difference: 150 Watts (100%)

Memory Bandwidth

In theory, the Geforce GTX 690 should perform much faster than the GeForce GTX 460 SE in general. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 460 SE		108800 MB/sec
	Difference: 275712 (253%)

Texel Rate

The Geforce GTX 690 should be a lot (approximately 651%) faster with regards to anisotropic filtering than the GeForce GTX 460 SE. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 203040 (651%)

Pixel Rate

The Geforce GTX 690 should be much (more or less 182%) better at full screen anti-aliasing than the GeForce GTX 460 SE, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 460 SE		20800 Mpixels/sec
	Difference: 37760 (182%)

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 information (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 are processed in one second. This number is worked out by multiplying the total texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.