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


Intro

The GeForce 8800 GTS (G80) 320MB features a core clock frequency of 513 MHz and a GDDR3 memory speed of 792 MHz. It also uses a 320-bit memory bus, and uses a 90 nm design. It is comprised of 96 SPUs, 48 TAUs, and 20 ROPs.

Compare that to the GeForce 9500 GT DDR2, which features a clock frequency of 550 MHz and a DDR2 memory frequency of 500 MHz. It also makes use of a 128-bit memory bus, and uses a 65 nm design. It is made up of 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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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

Performance-wise, the GeForce 8800 GTS (G80) 320MB should theoretically be much better 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 should be quite a bit (approximately 180%) more effective at texture filtering 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 should be a lot (more or less 133%) faster with regards to AA than the GeForce 9500 GT DDR2, and also able to handle higher resolutions better. (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

Amazon.com

GeForce 9500 GT DDR2

Amazon.com

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 information (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

Amazon.com

GeForce 9500 GT DDR2

Amazon.com

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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