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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 runs at 900 MHz through a 384-bit bus. It also is comprised of 128 SPUs, 64 TAUs, and 24 Raster Operation Units.

Compare those specifications to the GeForce GT 450 (OEM), which has GPU core speed of 790 MHz, and 1536 MB of GDDR5 RAM running at 1000 MHz through a 192-bit bus. It also is made up of 144 SPUs, 24 TAUs, and 24 ROPs.

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

As far as performance goes, the GeForce GT 450 (OEM) should theoretically be just a bit better than the GeForce 8800 GTX overall. (explain)

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

Texel Rate

The GeForce 8800 GTX will be a lot (approximately 94%) more effective at texture 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

The GeForce GT 450 (OEM) is quite a bit (approximately 37%) better at anti-aliasing than the GeForce 8800 GTX, and capable of handling higher screen resolutions better. (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

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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 largest amount of information (in units of MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 can be applied per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics 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 chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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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.

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