GeForce GT 340 vs GeForce GTX 460

Intro

Compare those specs to the GeForce GTX 460, which makes use of a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 RAM works at a speed of 900 MHz on this particular model. It features 336 SPUs as well as 56 TAUs and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 460		150 Watts
	Difference: 81 Watts (117%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 should theoretically be much better than the GeForce GT 340 in general. (explain)

GeForce GTX 460		86400 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 32000 (59%)

Texel Rate

The GeForce GTX 460 will be much (more or less 115%) better at texture filtering than the GeForce GT 340. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 20200 (115%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 is a better choice, by a large margin. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 11800 (268%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one 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 ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the 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 maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.