GeForce GT 340 1GB vs GeForce GTX 460 1GB

Intro

Compare those specifications to the GeForce GTX 460 1GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR5 memory is set to run at a speed of 900 MHz on this specific card. It features 336 SPUs along with 56 Texture Address Units 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 1GB		160 Watts
	Difference: 91 Watts (132%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 1GB should in theory be much superior to the GeForce GT 340 1GB overall. (explain)

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

Texel Rate

The GeForce GTX 460 1GB will be a lot (more or less 115%) more effective at texture filtering than the GeForce GT 340 1GB. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 1GB is superior to the GeForce GT 340 1GB, by a large margin. (explain)

GeForce GTX 460 1GB		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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.