GeForce 8800 GT 256MB vs GeForce GT 450 (OEM)

Intro

Compare all of that to the GeForce GT 450 (OEM), which features GPU clock 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 Stream Processors, 24 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 256MB		105 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

The GeForce GT 450 (OEM) should theoretically be much faster than the GeForce 8800 GT 256MB overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 51200 (114%)

Texel Rate

The GeForce 8800 GT 256MB will be quite a bit (about 77%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce 8800 GT 256MB		33600 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 14640 (77%)

Pixel Rate

The GeForce GT 450 (OEM) is quite a bit (about 98%) more effective at full screen anti-aliasing than the GeForce 8800 GT 256MB, and should be able to handle higher screen resolutions better. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8800 GT 256MB		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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video 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 number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.