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Do you leave your machines plugged in, when they're not in use?
#1
Do you leave your machines plugged in, when they're not in use?
JacquesT post_id=2116 time=1533803300 user_id=104 Wrote:Your ram will be susceptible to failure at a much higger rate, imho, not a good idea to unplug.

This brings me to the question: Is it better to leave you SGI machines plugged in, with their power supplies energised rather than unplugging them?

I do understand that the inrush current that the filter caps in a power supply are subject to, when a power supply is energised, is not good for them.

What concerns me about having my Tezro energised, when it's off, is that the backlit display in the front of the machine is always lit and L1 is always running.

What are your thoughts on this?
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Irinikus Online
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08-09-2018, 10:50 AM
#2
Re: Do you leave your machines plugged in, when they're not in use?
No I don't. The Indigo 2's PSU feels noticeably warm and pulls about 12w I believe in standby. I'm not wasting pounds of electricity a year on a machine that is off. Same for the Fuel, the PSU is old and pulls noticeable current when in standby (9w). Hence my SGIs are only turned on at the wall when in use.

Source: http://www.sgidepot.co.uk/sgipowerusage.html
 Indigo2 IMPACT R10000 195MHz, 384MB RAM, SolidIMPACT, 36GB 15k & 300GB 10k drives, new/quiet fans, IRIX 6.5.22
Fuel R14000 600MHz, 4GB RAM, V10 Graphics, 72GB 15k & 300GB 10k drives, new/quiet fans, IRIX 6.5.30
O2 in storage...
Trippynet Offline
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08-09-2018, 11:25 AM
#3
Re: Do you leave your machines plugged in, when they're not in use?
Trippynet post_id=2119 time=1533813947 user_id=67 Wrote:No I don't. The Indigo 2's PSU feels noticeably warm and pulls about 12w I believe in standby. I'm not wasting pounds of electricity a year on a machine that is off. Same for the Fuel, the PSU is old and pulls noticeable current when in standby (9w). Hence my SGIs are only turned on at the wall when in use.

Source: http://www.sgidepot.co.uk/sgipowerusage.html

Thanks for the link.

Although it's quite a bit by todays standards. I'm quite surprised at the power consumption of a fully loaded Tezro, when it's operating under load! I would have thought that it would be considerably more! (I'm sure that my gaming PC uses more than that, when it's under load.)

Although the standby power consumption on these machines if a pain, is there a considerable risk of damaging a machine that you use rather regularly, if you only plug it in when you use it? (Thermal shock and the like.)
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08-09-2018, 12:40 PM
#4
Re: Do you leave your machines plugged in, when they're not in use?
I left my Indy and O2 plugged in for years and years, the clock chip doesn't expend power when plugged in. (I think maybe I'm wrong) All I know is neither one has gone bad yet and I had both for 14years (sold to opcode) and 11 years. But yeah power draw and energy prices suck.

-Mike
mgtremaine Offline
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08-09-2018, 04:32 PM
#5
Re: Do you leave your machines plugged in, when they're not in use?
Modern PCs use less than you might think. My main PC is a Ryzen 7 (8 core CPU) with 16GB RAM, GeForce GTX 1070, plus 5 mechanical hard drives. According to the PSU monitor, it pulls about 115w when idle. If I hammer the CPU, RAM etc with Prime95. it jumps to 183w under load (just the graphics doing little).

Like I say, less than you would think really!

For idling, I estimate my Indigo2 would chew though about £20 of electricity a year if I left it plugged in. It adds up!
 Indigo2 IMPACT R10000 195MHz, 384MB RAM, SolidIMPACT, 36GB 15k & 300GB 10k drives, new/quiet fans, IRIX 6.5.22
Fuel R14000 600MHz, 4GB RAM, V10 Graphics, 72GB 15k & 300GB 10k drives, new/quiet fans, IRIX 6.5.30
O2 in storage...
Trippynet Offline
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08-09-2018, 04:58 PM
#6
Re: Do you leave your machines plugged in, when they're not in use?
Trippynet post_id=2131 time=1533833892 user_id=67 Wrote:Modern PCs use less than you might think. My main PC is a Ryzen 7 (8 core CPU) with 16GB RAM, GeForce GTX 1070, plus 5 mechanical hard drives. According to the PSU monitor, it pulls about 115w when idle. If I hammer the CPU, RAM etc with Prime95. it jumps to 183w under load (just the graphics doing little).

Like I say, less than you would think really!

For idling, I estimate my Indigo2 would chew though about £20 of electricity a year if I left it plugged in. It adds up!

My gaming PC is a semi vintage 2010 model with an i7 980X, a Titan x, a Corsair SSD (3rd drive), an OCZ Revodrive 3X2 (System Disk), a western digital Velociraptor (Secondary Drive) and a 1100W Coolermaster Extreme power supply.

This thing chews quite a bit!

Just for the record, it was originally fitted with two XFX 5970 Black Editions (these things drew 294W each when they were under full load!)

https://www.guru3d.com/articles-pages/as...iew,2.html
and then an ASUS ARES 1 which drew 349W when under full load.

and then I switched back to Nvidia in the form of a GTX 590 then GTX 690 then the GTX Titan X.

This machine still kicks ass by the way! (However this was probably my last PC, as I will stick to the Apple Mac Pro series in future.)
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08-09-2018, 05:38 PM
#7
Re: Do you leave your machines plugged in, when they're not in use?
My Octane2 (single CPU, Vpro) draws 13.2 Watts while being off. That is just too much for letting it plugged in all the time :-(
55cancri Offline
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08-09-2018, 06:06 PM
#8
Re: Do you leave your machines plugged in, when they're not in use?
55cancri post_id=2133 time=1533837968 user_id=247 Wrote:My Octane2 (single CPU, Vpro) draws 13.2 Watts while being off. That is just too much for letting it plugged in all the time :-(

Hm, my single cpu vpro seems to draw more at 19W? That's a bit weird.

PS - My RAM comment was in relation to unplugging the fan of the PSU in an O2 to run it silent, not regarding power consumption. Unplugging a PSU fan from an O2 is bad just plain bad juju and asking for trouble!
Octane  1x 400Mhz R12k, 1Gb, V8, 6.5.30m

O2 300Mhz R12K (R10K upgrade mod),  384Mb, 6.5.30m, FPA  with  1600SW (Original R5K chassis, mobo and cpu in storage)
JacquesT Offline
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08-09-2018, 06:34 PM
#9
Re: Do you leave your machines plugged in, when they're not in use?
I leave all my machines unplugged, except for an O2 I have which runs as a server. I briefly left the Origin2000 plugged in, because I didn't want to fish around behind it for a cable every time I wanted to use it, but turns out that thing uses like over a hundred watts before it's even turned on, so that ended quickly.
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08-09-2018, 06:36 PM
#10
Re: Do you leave your machines plugged in, when they're not in use?
Do you guys make use of a true RMS power meters to get your power consumption values?
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08-09-2018, 06:55 PM


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