GeForce GT 340 1GB vs Geforce GTX 670

Intro

Compare those specifications to the Geforce GTX 670, which features clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs along with 112 Texture Address Units and 32 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 670		170 Watts
	Difference: 101 Watts (146%)

Memory Bandwidth

Theoretically, the Geforce GTX 670 should perform a lot faster than the GeForce GT 340 1GB in general. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 137600 (253%)

Texel Rate

The Geforce GTX 670 will be much (about 482%) better at AF than the GeForce GT 340 1GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 84880 (482%)

Pixel Rate

The Geforce GTX 670 should be much (more or less 565%) faster with regards to anti-aliasing than the GeForce GT 340 1GB, and capable of handling higher resolutions without losing too much performance. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 24880 (565%)

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 maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card 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 core clock speed. 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 output 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 get to the maximum fill rate.