GeForce 8800 GT 512MB vs GeForce GT 450 (OEM)

Intro

Compare those specifications to the GeForce GT 450 (OEM), which has GPU clock speed of 790 MHz, and 1536 MB of GDDR5 memory set to run at 1000 MHz through a 192-bit bus. It also is comprised of 144 Stream Processors, 24 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be 67% quicker than the GeForce 8800 GT 512MB overall, because of its higher data rate. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 38400 (67%)

Texel Rate

The GeForce 8800 GT 512MB should be a lot (approximately 77%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 14640 (77%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GT 450 (OEM) is superior to the GeForce 8800 GT 512MB, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8800 GT 512MB		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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.