GeForce GT 340 1GB vs GeForce GTX 260 216SP 55 nm

Intro

Compare those specs to the GeForce GTX 260 216SP 55 nm, which uses a 55 nm design. nVidia has clocked the core speed at 576 MHz. The GDDR3 RAM runs at a frequency of 999 MHz on this model. It features 216 SPUs as well as 72 Texture Address Units and 28 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 102 Watts (148%)

Memory Bandwidth

The GeForce GTX 260 216SP 55 nm, in theory, should be a lot faster than the GeForce GT 340 1GB in general. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 57488 (106%)

Texel Rate

The GeForce GTX 260 216SP 55 nm should be much (about 136%) better at AF than the GeForce GT 340 1GB. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 23872 (136%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm is much (more or less 267%) faster with regards to FSAA than the GeForce GT 340 1GB, and will be able to handle higher resolutions better. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 11728 (267%)

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 largest amount of data (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.