GeForce 8600 GT 1GB DDR2 vs GeForce GT 450 (OEM)

Intro

Compare those specifications to the GeForce GT 450 (OEM), which features GPU clock speed of 790 MHz, and 1536 MB of GDDR5 memory running at 1000 MHz through a 192-bit bus. It also is made up of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB DDR2		47 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 59 Watts (126%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should theoretically be quite a bit superior to the GeForce 8600 GT 1GB DDR2 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8600 GT 1GB DDR2		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The GeForce GT 450 (OEM) is quite a bit (about 119%) better at AF than the GeForce 8600 GT 1GB DDR2. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce 8600 GT 1GB DDR2		8640 Mtexels/sec
	Difference: 10320 (119%)

Pixel Rate

The GeForce GT 450 (OEM) should be a lot (about 339%) faster with regards to FSAA than the GeForce 8600 GT 1GB DDR2, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8600 GT 1GB DDR2		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 largest amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.