GeForce 8600 GT 512MB GDDR3 vs GeForce GT 450 (OEM)

Intro

Compare those specs to the GeForce GT 450 (OEM), which comes with GPU core speed of 790 MHz, and 1536 MB of GDDR5 memory set to run at 1000 MHz through a 192-bit bus. It also is made up of 144 SPUs, 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 8600 GT 512MB GDDR3		47 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 59 Watts (126%)

Memory Bandwidth

As far as performance goes, the GeForce GT 450 (OEM) should in theory be quite a bit better than the GeForce 8600 GT 512MB GDDR3 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8600 GT 512MB GDDR3		22400 MB/sec
	Difference: 73600 (329%)

Texel Rate

The GeForce GT 450 (OEM) should be a lot (more or less 119%) more effective at AF than the GeForce 8600 GT 512MB GDDR3. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce 8600 GT 512MB GDDR3		8640 Mtexels/sec
	Difference: 10320 (119%)

Pixel Rate

The GeForce GT 450 (OEM) will be much (approximately 339%) faster with regards to AA than the GeForce 8600 GT 512MB GDDR3, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8600 GT 512MB GDDR3		4320 Mpixels/sec
	Difference: 14640 (339%)

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 max amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). 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 get to the maximum fill rate.