GeForce GT 340 1GB vs GeForce GTX 460 2GB

Intro

Compare those specs to the GeForce GTX 460 2GB, which comes with a GPU core clock speed of 675 MHz, and 2048 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 TAUs, and 32 Raster Operation Units.

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

Theoretically speaking, the GeForce GTX 460 2GB will be 112% quicker than the GeForce GT 340 1GB overall, because of its greater data rate. (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 should be much (more or less 115%) better at texture filtering 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

The GeForce GTX 460 2GB should be quite a bit (more or less 391%) more effective at FSAA than the GeForce GT 340 1GB, and should be able to handle higher screen resolutions while still performing well. (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 largest amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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