GeForce GT 340 1GB vs GeForce GTX 285 1GB

Intro

Compare all that to the GeForce GTX 285 1GB, which has clock speeds of 648 MHz on the GPU, and 1242 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs as well as 80 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 285 1GB		204 Watts
	Difference: 135 Watts (196%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 1GB should in theory be a lot better than the GeForce GT 340 1GB in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 104576 (192%)

Texel Rate

The GeForce GTX 285 1GB will be much (about 195%) more effective at anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 34240 (195%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 285 1GB is the winner, and very much so. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GT 340 1GB		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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock 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 maximum number of pixels the video card 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 amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.