GeForce GT 340 1GB vs GeForce GTX 590

Intro

Compare those specifications to the GeForce GTX 590, which features a GPU core clock speed of 607 MHz, and 1536 MB of GDDR5 memory set to run at 855 MHz through a 384-bit bus. It also is comprised of 512 Stream Processors, 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

Theoretically speaking, the GeForce GTX 590 will be 504% quicker than the GeForce GT 340 1GB overall, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 590 will be a lot (more or less 341%) faster with regards to AF 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

If running with a high resolution is important to you, then the GeForce GTX 590 is superior to the GeForce GT 340 1GB, by a large margin. (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: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.