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GeForce 8800 Ultra vs GeForce GT 450 (OEM)

Intro

The GeForce 8800 Ultra makes use of a 90 nm design. nVidia has set the core speed at 612 MHz. The GDDR3 RAM works at a frequency of 1080 MHz on this specific model. It features 128 SPUs along with 64 Texture Address Units and 24 Rasterization Operator Units.

Compare those specs to the GeForce GT 450 (OEM), which comes with a clock speed of 790 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 192-bit bus, and uses a 40 nm design. It features 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

Theoretically speaking, the GeForce 8800 Ultra should be a little bit faster than the GeForce GT 450 (OEM) overall. (explain)

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

Texel Rate

The GeForce 8800 Ultra will be quite a bit (about 107%) more effective 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 a better choice, 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

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 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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

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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