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GeForce 8800 GTX vs GeForce GT 450 (OEM)

Intro

The GeForce 8800 GTX features a GPU clock speed of 575 MHz, and the 768 MB of GDDR3 RAM is set to run at 900 MHz through a 384-bit bus. It also features 128 SPUs, 64 TAUs, and 24 ROPs.

Compare all that to the GeForce GT 450 (OEM), which features GPU core speed of 790 MHz, and 1536 MB of GDDR5 RAM set to run at 1000 MHz through a 192-bit bus. It also features 144 Stream Processors, 24 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
GeForce 8800 GTX 155 Watts
Difference: 49 Watts (46%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be 11% quicker than the GeForce 8800 GTX in general, because of its higher bandwidth. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
GeForce 8800 GTX 86400 MB/sec
Difference: 9600 (11%)

Texel Rate

The GeForce 8800 GTX should be a lot (approximately 94%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce 8800 GTX 36800 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 17840 (94%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 450 (OEM) is the winner, by a large margin. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 5160 (37%)

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 GTX

Amazon.com

Check prices at:

GeForce GT 450 (OEM)

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 GTX GeForce GT 450 (OEM)
Manufacturer nVidia nVidia
Year Nov 2006 October 2010
Code Name G80 GF106
Memory 768 MB 1536 MB
Core Speed 575 MHz 790 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 155 watts 106 watts
Bandwidth 86400 MB/sec 96000 MB/sec
Texel Rate 36800 Mtexels/sec 18960 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 18960 Mpixels/sec
Unified Shaders 128 144
Texture Mapping Units 64 24
Render Output Units 24 24
Bus Type GDDR3 GDDR5
Bus Width 384-bit 192-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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics 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 core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTX

Amazon.com

Check prices at:

GeForce GT 450 (OEM)

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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