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

Intro

The GeForce 8800 GTS (G80) 320MB has a clock frequency of 513 MHz and a GDDR3 memory frequency of 792 MHz. It also makes use of a 320-bit memory bus, and uses a 90 nm design. It is comprised of 96 SPUs, 48 Texture Address Units, and 20 ROPs.

Compare all that to the GeForce GT 240 GDDR5, which features a clock speed of 550 MHz and a GDDR5 memory speed of 850 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It features 96 SPUs, 32 Texture Address Units, and 8 ROPs.

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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 bandwidth. (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 should be much (more or less 40%) faster with regards to anisotropic 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 a high screen resolution is important to you, then the GeForce 8800 GTS (G80) 320MB is a better choice, by a large margin. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better 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 maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max 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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