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

Intro

Compare those specifications to the GeForce GT 450 (OEM), which has core clock speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 RAM. It features 144 SPUs along with 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 a lot faster than the GeForce 8800 GT 512MB in general. (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 (more or less 77%) faster with regards to AF 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

The GeForce GT 450 (OEM) is quite a bit (approximately 98%) better at anti-aliasing than the GeForce 8800 GT 512MB, and should be capable of handling higher screen resolutions while still performing well. (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 largest amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs 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 output 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 max fill rate.