GeForce GT 340 1GB vs GeForce GTX 660

Intro

Compare those specs to the GeForce GTX 660, which features a GPU core clock speed of 980 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 192-bit bus. It also features 960 Stream Processors, 80 Texture Address Units, and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 660		140 Watts
	Difference: 71 Watts (103%)

Memory Bandwidth

Theoretically, the GeForce GTX 660 should be a lot faster than the GeForce GT 340 1GB in general. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 89792 (165%)

Texel Rate

The GeForce GTX 660 will be quite a bit (more or less 345%) more effective at anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 60800 (345%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 660 is superior to the GeForce GT 340 1GB, by far. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 19120 (435%)

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 max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory 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 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 number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.