GeForce GT 340 1GB vs GeForce GTX 590

Intro

Compare all of that to the GeForce GTX 590, which features GPU core speed of 607 MHz, and 1536 MB of GDDR5 memory set to run at 855 MHz through a 384-bit bus. It also is made up of 512 SPUs, 64 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 590		365 Watts
	Difference: 296 Watts (429%)

Memory Bandwidth

The GeForce GTX 590, in theory, should be quite a bit faster than the GeForce GT 340 1GB overall. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 273920 (504%)

Texel Rate

The GeForce GTX 590 is a lot (about 341%) better at texture filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 60096 (341%)

Pixel Rate

The GeForce GTX 590 should be quite a bit (approximately 1224%) better at FSAA than the GeForce GT 340 1GB, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 53872 (1224%)

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 data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it must 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.