GeForce GT 340 1GB vs GeForce GTX 285 2GB

Intro

Compare all of that to the GeForce GTX 285 2GB, which comes with GPU core speed of 648 MHz, and 2048 MB of GDDR3 memory set to run at 1242 MHz through a 512-bit bus. It also is made up of 240 Stream Processors, 80 Texture Address Units, 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 285 2GB		204 Watts
	Difference: 135 Watts (196%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 285 2GB should in theory be quite a bit better than the GeForce GT 340 1GB in general. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 104576 (192%)

Texel Rate

The GeForce GTX 285 2GB will be quite a bit (more or less 195%) faster with regards to AF than the GeForce GT 340 1GB. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 34240 (195%)

Pixel Rate

The GeForce GTX 285 2GB will be a lot (about 371%) faster with regards to FSAA than the GeForce GT 340 1GB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 285 2GB		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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.