GeForce GT 340 vs GeForce GTX 285 2GB

Intro

Compare that to the GeForce GTX 285 2GB, which features a GPU core clock speed of 648 MHz, and 2048 MB of GDDR3 memory running at 1242 MHz through a 512-bit bus. It also is made up of 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 135 Watts (196%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 2GB should be much faster than the GeForce GT 340 overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 104576 (192%)

Texel Rate

The GeForce GTX 285 2GB should be a lot (about 195%) better at AF than the GeForce GT 340. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 34240 (195%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 285 2GB is the winner, by far. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 16336 (371%)

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 information (measured in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.