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GeForce 8800 GTX vs GeForce GT 340 1GB

Intro

The GeForce 8800 GTX features a clock frequency of 575 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 384-bit bus, and uses a 90 nm design. It is comprised of 128 SPUs, 64 TAUs, and 24 ROPs.

Compare that to the GeForce GT 340 1GB, which features a clock frequency of 550 MHz and a GDDR5 memory speed 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.

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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

Performance-wise, the GeForce 8800 GTX should theoretically be quite a bit superior to 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 should be a lot (about 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 using lots of anti-aliasing is important to you, then the GeForce 8800 GTX is the winner, 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

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GeForce 8800 GTX

Amazon.com

Check prices at:

GeForce GT 340 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 8800 GTX GeForce GT 340 1GB
Manufacturer nVidia nVidia
Year Nov 2006 February 2010
Code Name G80 GT215
Memory 768 MB 1024 MB
Core Speed 575 MHz 550 MHz
Memory Speed 1800 MHz 3400 MHz
Power (Max TDP) 155 watts 69 watts
Bandwidth 86400 MB/sec 54400 MB/sec
Texel Rate 36800 Mtexels/sec 17600 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 128 96
Texture Mapping Units 64 32
Render Output Units 24 8
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 727 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.3

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated 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 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 of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8800 GTX

Amazon.com

Check prices at:

GeForce GT 340 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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