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GeForce 8800 GTS (G80) 320MB vs GeForce GTS 450 1GB

Intro

The GeForce 8800 GTS (G80) 320MB comes with a GPU clock speed of 513 MHz, and the 320 MB of GDDR3 memory runs at 792 MHz through a 320-bit bus. It also is comprised of 96 Stream Processors, 48 TAUs, and 20 ROPs.

Compare that to the GeForce GTS 450 1GB, which features core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB 106 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 37 Watts (35%)

Memory Bandwidth

The GeForce 8800 GTS (G80) 320MB, in theory, should perform a small bit faster than the GeForce GTS 450 1GB overall. (explain)

GeForce 8800 GTS (G80) 320MB 63360 MB/sec
GeForce GTS 450 1GB 57728 MB/sec
Difference: 5632 (10%)

Texel Rate

The GeForce GTS 450 1GB should be just a bit (about 2%) faster with regards to texture filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 432 (2%)

Pixel Rate

The GeForce GTS 450 1GB should be quite a bit (more or less 22%) more effective at FSAA than the GeForce 8800 GTS (G80) 320MB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 2268 (22%)

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

Check prices at:

GeForce GTS 450 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 GTS (G80) 320MB GeForce GTS 450 1GB
Manufacturer nVidia nVidia
Year Feb 2007 September 2010
Code Name G80 GF106
Memory 320 MB 1024 MB
Core Speed 513 MHz 783 MHz
Memory Speed 1584 MHz 3608 MHz
Power (Max TDP) 143 watts 106 watts
Bandwidth 63360 MB/sec 57728 MB/sec
Texel Rate 24624 Mtexels/sec 25056 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 12528 Mpixels/sec
Unified Shaders 96 192
Texture Mapping Units 48 32
Render Output Units 20 16
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 1170 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

GeForce GTS 450 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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