[Gllug] Cheap rackmount servers

[Lucian]

On Tue, Aug 24, 2010 at 12:36 AM, Nix <nix at esperi.org.uk> wrote:
> On 23 Aug 2010, Andy Millar spake thusly:
>> To put things in perspective, I make a "profit" within 12 months by
>> changing from a HP DL140 G3 to a Dell R210.
>>
>> I suspect most of the power savings are from moving to the nehalem
>> cpus and associated architecture, which seem to have much improved
>> power management.
>
> Agreed. I moved my home machines from a couple of always-on old
> rattletraps (four rather old disks in an md RAID array, PIII and Athlon
> 4) to a single always-on Nehalem server (with S states enabled in the
> BIOS, and four RAIDed GreenPower disks) and a Core i7 (-> Nehalem)
> desktop that's suspended when not in use (but has S states disabled so
> that Linux can rely on the TSC being constant frequency, as accurate
> time measurement matters more for desktops and power conservation is not
> so critical as it's off when idle for long periods).
>
> I hoped this would save me some power, but my power bill fell by *three
> quarters*

That's a wow! Thanks for sharing, didn't imagine the difference in
power usage is so massive.

>, far more than I'd been expectin. Note that this is despite my
> having the usual house stuff in the bill as well.
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