GeForce 8800 GTS (G80) 320MB vs GeForce GT 340 1GB

Intro

Compare those specs to the GeForce GT 340 1GB, which has GPU clock speed of 550 MHz, and 1024 MB of GDDR5 memory set to run at 850 MHz through a 128-bit bus. It also features 96 Stream Processors, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 74 Watts (107%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTS (G80) 320MB should theoretically be a little bit better than the GeForce GT 340 1GB in general. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 8960 (16%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB is much (approximately 40%) faster with regards to anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 7024 (40%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 8800 GTS (G80) 320MB is a better choice, by a large margin. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 5860 (133%)

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 data (counted in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 are applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.