GeForce 8800 GTX vs GeForce GT 340

Intro

Compare those specs to the GeForce GT 340, which has a clock frequency of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 96 SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
GeForce 8800 GTX		155 Watts
	Difference: 86 Watts (125%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTX will be 59% faster than the GeForce GT 340 in general, because of its higher data rate. (explain)

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

Texel Rate

The GeForce 8800 GTX is quite a bit (approximately 109%) more effective at texture filtering than the GeForce GT 340. (explain)

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

Pixel Rate

The GeForce 8800 GTX should be much (about 214%) better at full screen anti-aliasing than the GeForce GT 340, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce GT 340		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: Bandwidth is the largest amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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