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GeForce 8800 GTS (G80) 320MB vs GeForce 9500 GT DDR2

Intro

The GeForce 8800 GTS (G80) 320MB comes with a GPU core clock speed of 513 MHz, and the 320 MB of GDDR3 RAM is set to run at 792 MHz through a 320-bit bus. It also is made up of 96 Stream Processors, 48 Texture Address Units, and 20 Raster Operation Units.

Compare those specifications to the GeForce 9500 GT DDR2, which makes use of a 65 nm design. nVidia has set the core frequency at 550 MHz. The DDR2 RAM runs at a speed of 500 MHz on this specific model. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2 50 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 93 Watts (186%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G80) 320MB should perform a lot faster than the GeForce 9500 GT DDR2 overall. (explain)

GeForce 8800 GTS (G80) 320MB 63360 MB/sec
GeForce 9500 GT DDR2 16000 MB/sec
Difference: 47360 (296%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB will be quite a bit (more or less 180%) better at AF than the GeForce 9500 GT DDR2. (explain)

GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
GeForce 9500 GT DDR2 8800 Mtexels/sec
Difference: 15824 (180%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB will be quite a bit (approximately 133%) more effective at FSAA than the GeForce 9500 GT DDR2, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
GeForce 9500 GT DDR2 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

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GeForce 9500 GT DDR2

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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 9500 GT DDR2
Manufacturer nVidia nVidia
Year Feb 2007 July 2008
Code Name G80 G96a
Memory 320 MB 256 MB
Core Speed 513 MHz 550 MHz
Memory Speed 1584 MHz 1000 MHz
Power (Max TDP) 143 watts 50 watts
Bandwidth 63360 MB/sec 16000 MB/sec
Texel Rate 24624 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 96 32
Texture Mapping Units 48 16
Render Output Units 20 8
Bus Type GDDR3 DDR2
Bus Width 320-bit 128-bit
Fab Process 90 nm 65 nm
Transistors 681 million 314 million
Bus PCIe x16 PCIe x16 2.0, PCI
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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

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GeForce 9500 GT DDR2

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 9500 GT DDR2”
Chris&Rusty says:

I am going to put the 2 in the same rig for a week each and see who is who at seti@home CUDA tasks. I had previously run a 9800 GT. It should be noted I have the PNY 9500 GT, the 8800 GTS is a version made by EVGA as a "eGeForce" not sure but suspect it has nothing to do with the cards abilities.

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