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List:       opensuse
Subject:    Re: [opensuse] Legacy hardware support in openSUSE 10.3
From:       Per Jessen <per () opensuse ! org>
Date:       2009-06-16 18:07:26
Message-ID: h18n0u$b5s$1 () saturn ! local ! net
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Felix Miata wrote:

> On 2009/06/16 19:24 (GMT+0200) Per Jessen composed:
> 
>> Felix Miata wrote:
> 
>>> Oh, and the modern speedy systems make better room heaters too. That
>>> and the added electricity they consume may be another reason to keep
>>> the old stuff online until it expires on its own.
> 
>> Maybe it's a case of YMMV, but my experience is exactly the opposite
>> - we've very recently replaced a number of older Compaq Proliant
>> quad-PIII 700MHz machines with a single modern 8-core 2.8GHz HP
>> Proliant.  The new box does quite a lot more work per kwH.  Older
>> single-core systems really are a lot less energy efficient.
> 
> A quad PIII is anything but run of the mill. More typical PIII
> machines can get by on 120 watt or less power supplies, with 200 or
> 225 typically installed, instead of a  demand for 300 watt or more
> like in current systems. 40mm & 60mm fans worked for PIII coolers. Few
> current chips are happy with less than 80mm fans for their coolers,
> and 90mm isn't unusual.
> 
> Gfxcards used to need no chip coolers. Now passive coolers aren't even
> enough. Those large active gfxcard coolers mean a lot more heat is
> generated in modern systems.
> 
> Newer might be slightly more efficient per MHz, or even considerably
> more, but they're mostly running  at 3-10 times the MHz, with highly
> demanding gfxcards, so doing more room heating and watt consumption on
> average.

Felix, like I said, YMMV - you're clearly talking about office/home
desktops and workstations, whereas I'm talking about servers in racks
in a datacentre.  Our servers have at least two power supplies,
multiple hot-plug redundant fans etc etc.  We tend to be quite
conservative wrt upgrading hardware, but our recent upgrades have
reduced both electricity and airconditioning costs. 

/Per


-- 
Per Jessen, Zürich (20.2 °C)

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