GeForce 8600 GT 256MB GDDR3 vs GeForce GT 450 (OEM)

Intro

Compare all of that to the GeForce GT 450 (OEM), which makes use of a 40 nm design. nVidia has clocked the core frequency at 790 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this card. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 256MB GDDR3		47 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 59 Watts (126%)

Memory Bandwidth

The GeForce GT 450 (OEM) should theoretically perform quite a bit faster than the GeForce 8600 GT 256MB GDDR3 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8600 GT 256MB GDDR3		22400 MB/sec
	Difference: 73600 (329%)

Texel Rate

The GeForce GT 450 (OEM) is much (more or less 119%) faster with regards to AF than the GeForce 8600 GT 256MB GDDR3. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce 8600 GT 256MB GDDR3		8640 Mtexels/sec
	Difference: 10320 (119%)

Pixel Rate

The GeForce GT 450 (OEM) will be much (approximately 339%) more effective at full screen anti-aliasing than the GeForce 8600 GT 256MB GDDR3, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8600 GT 256MB 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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.