-----Original Message-----
From: David Brownlee <abs@anim.dreamworks.com>
To: Erno Palonheimo <fsck@stip.net>
Cc: port-vax@NetBSD.ORG <port-vax@NetBSD.ORG>
Date: Thursday, 7 May 1998 2:40
Subject: Re: MicroVAX 3400 booting problems.


>
>On Wed, 6 May 1998, Erno Palonheimo wrote:
>
>>
>> And, also I am interested in physical size of VAX-11/750 machine. That
is,
>> the measures of the cabinet and the weight.
>>
>(from:
>http://www.netbsd.org/Library/Hardware/Machines/DEC/vax/vax700.html#vax700:
vax_11_750
>
>106*73*76 cm (H*W*D), 182kg, 1700W
                                                              ^^^^^

How much of this does it actually need? I have found DEC's placards are an
indicator only of how much it is capable of drawing when FULLY loaded up.
For instance, a Vax 6000-310 with 64mb of ram actually draws, when measured
with a digital ac ampmeter in series with the machine, just under 2 amps
from a 240vac single phase power point, under 500w.   However, according to
the makers plate, it needs 3,300w.  It appears to have been very
conservatively engineered, as the 350amps@5v the supplies are capable of
delivering would need a truly awesome card fit to use any significant
portion of it.
 I realise older stuff like the 11/750 was a lot hungrier than stuff like
the 6310 (which uses mostly surface mount stuff on it's cards), but how much
hungrier?

Cheers

Geoff Roberts
Computer Systems Manager
Saint Marks College
Port Pirie  South Australia.
My ICQ# is 1970476
Ph.  61-411-623-978 (Mobile)
       61-8-8633-0619 (Home)
       61-8-8633-0104 (Fax)