GeForce 8800 GTX vs GeForce GT 340 1GB

Intro

Compare those specs to the GeForce GT 340 1GB, which features a clock speed of 550 MHz and a GDDR5 memory speed of 850 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 96 SPUs, 32 Texture Address Units, 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 GTX		155 Watts
	Difference: 86 Watts (125%)

Memory Bandwidth

The GeForce 8800 GTX should theoretically be a lot faster than the GeForce GT 340 1GB overall. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 32000 (59%)

Texel Rate

The GeForce 8800 GTX will be quite a bit (more or less 109%) faster with regards to AF than the GeForce GT 340 1GB. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 19200 (109%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GTX is a better choice, by far. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 9400 (214%)

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.