GeForce 8800 GT 1GB vs GeForce GT 450 (OEM)

Intro

Compare those specs to the GeForce GT 450 (OEM), which makes use of a 40 nm design. nVidia has clocked the core frequency at 790 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular model. It features 144 SPUs as well as 24 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be much faster than the GeForce 8800 GT 1GB overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 38400 (67%)

Texel Rate

The GeForce 8800 GT 1GB is a lot (about 77%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

GeForce 8800 GT 1GB		33600 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 14640 (77%)

Pixel Rate

The GeForce GT 450 (OEM) is a lot (more or less 98%) more effective at FSAA than the GeForce 8800 GT 1GB, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 9360 (98%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.