GeForce GTX 465 vs GeForce GTX 590

Intro

Compare those specs to the GeForce GTX 590, which uses a 40 nm design. nVidia has clocked the core speed at 607 MHz. The GDDR5 memory runs at a frequency of 855 MHz on this card. It features 512 SPUs along with 64 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
GeForce GTX 590		365 Watts
	Difference: 165 Watts (83%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 590 will be 220% quicker than the GeForce GTX 465 overall, due to its greater data rate. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 225728 (220%)

Texel Rate

The GeForce GTX 590 is a lot (approximately 191%) better at anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 50988 (191%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 590 is superior to the GeForce GTX 465, by a large margin. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 38848 (200%)

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 largest amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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.