GeForce 8800 GT 256MB vs GeForce GT 340

Intro

Compare that to the GeForce GT 340, which comes with core speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 RAM. It features 96 SPUs as well as 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce 8800 GT 256MB		105 Watts
	Difference: 36 Watts (52%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 340 will be 21% quicker than the GeForce 8800 GT 256MB overall, because of its greater bandwidth. (explain)

GeForce GT 340		54400 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 9600 (21%)

Texel Rate

The GeForce 8800 GT 256MB should be quite a bit (approximately 91%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

GeForce 8800 GT 256MB		33600 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 16000 (91%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 GT 256MB is the winner, and very much so. (explain)

GeForce 8800 GT 256MB		9600 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 5200 (118%)

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 (measured in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units by the core 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 most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.