GeForce GTX 460 2GB vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which uses a 28 nm design. nVidia has clocked the core speed at 915 MHz. The GDDR5 RAM runs at a frequency of 1502 MHz on this specific model. It features 1536 SPUs along with 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 2GB		160 Watts
Geforce GTX 690		300 Watts
	Difference: 140 Watts (88%)

Memory Bandwidth

Performance-wise, the Geforce GTX 690 should in theory be quite a bit better than the GeForce GTX 460 2GB overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 269312 (234%)

Texel Rate

The Geforce GTX 690 should be a lot (more or less 520%) better at texture filtering than the GeForce GTX 460 2GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 196440 (520%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 690 is superior to the GeForce GTX 460 2GB, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 460 2GB		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 largest amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.