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GeForce 8800 Ultra vs GeForce GT 450 (OEM)

Intro

The GeForce 8800 Ultra uses a 90 nm design. nVidia has set the core speed at 612 MHz. The GDDR3 memory is set to run at a speed of 1080 MHz on this model. It features 128 SPUs along with 64 TAUs and 24 Rasterization Operator Units.

Compare those specs to the GeForce GT 450 (OEM), which has a core clock frequency of 790 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 192-bit bus, and uses a 40 nm design. It is made up of 144 SPUs, 24 Texture Address Units, 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 Ultra 171 Watts
Difference: 65 Watts (61%)

Memory Bandwidth

In theory, the GeForce 8800 Ultra is 8% faster than the GeForce GT 450 (OEM) overall, because of its greater bandwidth. (explain)

GeForce 8800 Ultra 103680 MB/sec
GeForce GT 450 (OEM) 96000 MB/sec
Difference: 7680 (8%)

Texel Rate

The GeForce 8800 Ultra is a lot (about 107%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce 8800 Ultra 39168 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 20208 (107%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 450 (OEM) is superior to the GeForce 8800 Ultra, by far. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce 8800 Ultra 14688 Mpixels/sec
Difference: 4272 (29%)

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 Ultra

Amazon.com

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GeForce GT 450 (OEM)

Amazon.com

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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 Ultra GeForce GT 450 (OEM)
Manufacturer nVidia nVidia
Year May 2007 October 2010
Code Name G80 GF106
Memory 768 MB 1536 MB
Core Speed 612 MHz 790 MHz
Memory Speed 2160 MHz 4000 MHz
Power (Max TDP) 171 watts 106 watts
Bandwidth 103680 MB/sec 96000 MB/sec
Texel Rate 39168 Mtexels/sec 18960 Mtexels/sec
Pixel Rate 14688 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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling 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 the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 8800 Ultra

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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