GeForce GT 340 1GB vs GeForce GTX 460 2GB

Intro

Compare those specs to the GeForce GTX 460 2GB, which features core speeds of 675 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 memory. It features 336 SPUs along with 56 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 91 Watts (132%)

Memory Bandwidth

The GeForce GTX 460 2GB should in theory perform quite a bit faster than the GeForce GT 340 1GB in general. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 60800 (112%)

Texel Rate

The GeForce GTX 460 2GB is quite a bit (about 115%) better at AF than the GeForce GT 340 1GB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 20200 (115%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 460 2GB is the winner, by a large margin. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 17200 (391%)

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 max amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.