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GeForce 8800 GTS (G80) 320MB vs GeForce GT 240 GDDR5

Intro

The GeForce 8800 GTS (G80) 320MB has core clock speeds of 513 MHz on the GPU, and 792 MHz on the 320 MB of GDDR3 memory. It features 96 SPUs as well as 48 Texture Address Units and 20 Rasterization Operator Units.

Compare those specifications to the GeForce GT 240 GDDR5, which uses a 40 nm design. nVidia has set the core speed at 550 MHz. The GDDR5 memory works at a speed of 850 MHz on this particular card. It features 96 SPUs along with 32 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 70 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 73 Watts (104%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G80) 320MB will be 16% quicker than the GeForce GT 240 GDDR5 in general, due to its higher data rate. (explain)

GeForce 8800 GTS (G80) 320MB 63360 MB/sec
GeForce GT 240 GDDR5 54400 MB/sec
Difference: 8960 (16%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB is much (about 40%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
GeForce GT 240 GDDR5 17600 Mtexels/sec
Difference: 7024 (40%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 8800 GTS (G80) 320MB is a better choice, and very much so. (explain)

GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
GeForce GT 240 GDDR5 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

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GeForce 8800 GTS (G80) 320MB

Amazon.com

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GeForce GT 240 GDDR5

Amazon.com

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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 GTS (G80) 320MB GeForce GT 240 GDDR5
Manufacturer nVidia nVidia
Year Feb 2007 Novermber 2009
Code Name G80 GT215
Memory 320 MB 512 MB
Core Speed 513 MHz 550 MHz
Memory Speed 1584 MHz 3400 MHz
Power (Max TDP) 143 watts 70 watts
Bandwidth 63360 MB/sec 54400 MB/sec
Texel Rate 24624 Mtexels/sec 17600 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 96 96
Texture Mapping Units 48 32
Render Output Units 20 8
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 289 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

GeForce GT 240 GDDR5

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.

Comments

One Response to “GeForce 8800 GTS (G80) 320MB vs GeForce GT 240 GDDR5”
Which Is Better? - Page 2 - Overclock.net - Overclocking.net says:

[...] because you rarely find benchmarks 2 series apart. so treat the 9600gt as the 8800gts 320mb. http://www.hwcompare.com/958/geforce...-gt-240-gddr5/ As I said earlier, 260 is just a bit faster than 8800, but also gives way better TDP and DirectX [...]

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