[Klug-general] Power Consumption

[James Blake]

Solid State Drives have a lower power consumption than mechanical  
disks, but this isn't normally noticed in things like laptops and  
desktops because of a) the limited number of read/write occuring; and  
b) in these environments with typically powerful graphics cards, sound  
cards, etc, the disk is one of the lowest power drawers.

It does make a difference when your talking about the density of a  
data centre where each fractional saving quickly adds up and heat  
generation and power availability are top issues.

We're testing the new all SSD HP ProLiant G6 setup at the moment but  
the sizes of the SSDs are so small (120 Gb compared to 1Tb) we'd need  
to increase our server density and therefore negate the power  
benefit.  The drives are also about 30 - 50 times faster for retrieval  
than mechanical ones (but slower on writes), but for lots of I/O  
operations Flash only has a limited lifespan (but most have  
controllers than ensure distribution across the entire memory to  
prevent overuse of any particular area).

Regards


James


On 18 Sep 2009, at 10:31, Alex Layfield wrote:

> Any ideas on minimal power req for various AT ATX ITX setups?
>
> CPU dependent I s'pose...?
>
> Power consumption of an HDD? 2.5 3.5 IDE/SATA SolidSt8?
>
> RAM?
>
> USB CD-ROM?
>
> IDE CD-ROM?
>
> Geek Stick?
>
> Bluetooth Stack?
>
> Any useful linx?
>
>
>
> /A
>
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