GeForce GT 340 1GB vs Geforce GTX 680

Intro

Compare all of that to the Geforce GTX 680, which has core speeds of 1006 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 128 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 680		195 Watts
	Difference: 126 Watts (183%)

Memory Bandwidth

In theory, the Geforce GTX 680 should be quite a bit faster than the GeForce GT 340 1GB in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 137856 (253%)

Texel Rate

The Geforce GTX 680 should be much (about 632%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 111168 (632%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 680 is superior to the GeForce GT 340 1GB, by a large margin. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 27792 (632%)

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 transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.