GeForce GTX 465 vs Geforce GTX 690

Intro

Compare that to the Geforce GTX 690, which has a core clock frequency of 915 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
Geforce GTX 690		300 Watts
	Difference: 100 Watts (50%)

Memory Bandwidth

Performance-wise, the Geforce GTX 690 should theoretically be quite a bit better than the GeForce GTX 465 overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 281920 (275%)

Texel Rate

The Geforce GTX 690 is a lot (more or less 777%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 207532 (777%)

Pixel Rate

The Geforce GTX 690 should be much (approximately 201%) faster with regards to full screen anti-aliasing than the GeForce GTX 465, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 39136 (201%)

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 (counted in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, 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 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 ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.