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04-08-2006, 10:35 AM
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#16
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Moderator
Registered: Jan 2005
Location: Central Florida 20 minutes from Disney World
Distribution: SlackwareŽ
Posts: 13,971
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Quote:
Originally Posted by gmcmaster
My post was in reply to the OP, either I misread what he wanted or he's edited since. Thing is, if you buy an ATX PSU for an old AT Motherboard, you will not be able to power the motherboard, only the peripherals as the connector for the power to the motherboard was different back then
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Hi,
My mistake! But I wanted to clarify my previous post without an edit.
You can use the newer PSU but there is a hassle to the installation with adapters for the MB. I would just use an AT PSU instead when replacing an AT PSU. You can still get multi-use PSU but I cannot justify the $$ difference.
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04-08-2006, 05:16 PM
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#17
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Senior Member
Registered: May 2003
Distribution: Slackware, OpenSuSE
Posts: 1,839
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To be honest, I don't know much about hardware, but not too long ago I read the summary of an article that strongly suggested
- not to use anythng 350W
- not to use anything above 450W for home servers, as only experts are able to handle even bigger beasts the right way; with power supplies beyond 450W you'll have to face lots of issues with cooling and electrical stability; and if you make a mistake it can even become a danger for your health. And: It's going to cost you. Power supplies up to 450W are almost commodities, nowadays, but everything more powerful is special equipment, and expensive.
gargamel
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04-09-2006, 08:47 AM
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#18
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Moderator
Registered: Jan 2005
Location: Central Florida 20 minutes from Disney World
Distribution: SlackwareŽ
Posts: 13,971
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Quote:
Originally Posted by gargamel
To be honest, I don't know much about hardware, but not too long ago I read the summary of an article that strongly suggested
- not to use anythng 350W
- not to use anything above 450W for home servers, as only experts are able to handle even bigger beasts the right way; with power supplies beyond 450W you'll have to face lots of issues with cooling and electrical stability; and if you make a mistake it can even become a danger for your health. And: It's going to cost you. Power supplies up to 450W are almost commodities, nowadays, but everything more powerful is special equipment, and expensive.
gargamel
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Hi,
I feel that a system should be sized for the loads of that system not a cookbook setting. As for to use of a 350W PSU, why not? If that is the size needed for your system and the peripheral needs are margined below that load then of course use one.
Your other statements concerning 450W PSU are absurd and the information is misleading. The sizing of the PSU is important for the load the PSU will see. Too set the load at a minimum margin will get you in trouble. The PSU should be sized to allow for system growth with a margin of at least 30 per cent. Just a small margin. But why would you double the margin? The doubling would be a waste of $$.
You latter statement about the use of PSU above 450W is not correct. The PSU stability has nothing to do with the size but the load reflected to the PSU. Generalized statements like these are not something to use when sizing a system. And to warn someone that harm exists because of the size above 450W is very wrong. Heck, you can be harmed by smaller PSUs' if you don't know what you are doing. If you must post information of this type then backup with links or valid data.
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07-10-2006, 12:21 PM
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#19
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Senior Member
Registered: Sep 2004
Location: Philadelphia, PA
Distribution: Xubuntu, Mythbuntu, Lubuntu, Picuntu, Mint 18.1, Debian Jessie
Posts: 1,207
Original Poster
Rep:
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I just got an old HP 700 MHz pc....Celeron CPU with 128 MB RAM, 80 GB harddrive, and CD-RW. It only has a 100 W power supply that's compact and made just for HP computers. That seems to be way too low, especially for running 24/7 as a server pc. Is that right?
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07-10-2006, 01:00 PM
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#20
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Senior Member
Registered: Sep 2004
Location: Nashville
Distribution: Manjaro, RHEL, CentOS
Posts: 2,098
Rep: 
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gwsandvik, I could not agree more. The information about the PSU is so misleading these days. When I am building a new computer I go with a PSU that will handle the load of all the parts in the machine. I may buy just a little extra for that just incase(Like adding another part that was unforseen at the time.)
Linuxhippy you said that you have an expceted crowd of 50 users that will access you machine at any given time? That should be plenty of proccessing power depending on what those users will be doing. I would just go about upgrading the ram and power supply. How old is this server.
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07-10-2006, 01:43 PM
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#21
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Moderator
Registered: Jan 2005
Location: Central Florida 20 minutes from Disney World
Distribution: SlackwareŽ
Posts: 13,971
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Quote:
Originally Posted by linuxhippy
I just got an old HP 700 MHz pc....Celeron CPU with 128 MB RAM, 80 GB harddrive, and CD-RW. It only has a 100 W power supply that's compact and made just for HP computers. That seems to be way too low, especially for running 24/7 as a server pc. Is that right?
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Hi,
You will need to calculate the load reflected to the PSU.
The power requirements for the CPU won't be that great for the class. What type of hard disk? Which motherboard? Which cd-rw?
Now for the the question about 24/7. The load requirement will depend on peripheral activity. If you run headless for the system then the load for the video card is gone. Also the keyboard will not be needed. That is if the bios will support the option to run headless. Most bios will allow you to continue on init errors.
If you have the model number for the HP system it will allow you to find the power requirements. BTW, is the HD a laptop drive?
This could be used to lower the power requirements.
I wonder if the system is a desktop terminal system?
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07-10-2006, 03:24 PM
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#22
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Moderator
Registered: Aug 2002
Posts: 26,517
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Quote:
My concern is that if I get a lot of people on my server at once that this old CPU would not have enough power to serve. Should I be concerned about that? How much power would this pc need if 50 people were logged on at the same time?
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If your hard drive was read/writing, DVD player a movie and CD writer burning continiously (if possible) you could add maybe 3 watts depending on make / model assuming the hard drive is in idle vs power down. All other peripherals attached to the motherboard will draw the same amount of power no matter how many people are logged in. I do not see the need to get a bigger power supply. I would not necessarly change the power supply just because it is 3 yrs old either.
Throughput is another story and it depends what applications you intend to run.
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07-10-2006, 06:09 PM
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#23
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Senior Member
Registered: Sep 2004
Location: Philadelphia, PA
Distribution: Xubuntu, Mythbuntu, Lubuntu, Picuntu, Mint 18.1, Debian Jessie
Posts: 1,207
Original Poster
Rep:
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For the past 4 months I've run an mp3 server out of my basement on an old pc with a good size case and ATX motherboard that is meant for upgrading and for a server.
The HP is a Pavilion desktop model 6745C with a 20 GB harddrive. I want to swap this drive with the 80 GB drive (a Western Digital) that is currently in my server. The HP is on a micro ATX motherboard and has a small case which offers no room for upgrade...I don't think this pc was built to be a server.
The HP came with Win ME, so I'm thinking it's about 5 years old and my server is 9 years old.
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07-11-2006, 09:42 AM
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#24
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Moderator
Registered: Jan 2005
Location: Central Florida 20 minutes from Disney World
Distribution: SlackwareŽ
Posts: 13,971
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Quote:
Originally Posted by linuxhippy
For the past 4 months I've run an mp3 server out of my basement on an old pc with a good size case and ATX motherboard that is meant for upgrading and for a server.
The HP is a Pavilion desktop model 6745C with a 20 GB harddrive. I want to swap this drive with the 80 GB drive (a Western Digital) that is currently in my server. The HP is on a micro ATX motherboard and has a small case which offers no room for upgrade...I don't think this pc was built to be a server.
The HP came with Win ME, so I'm thinking it's about 5 years old and my server is 9 years old.
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Hi,
If you look at WD
you can get the power requirements for a wd 80gb drive. I'm not sure about your drive. You can get the specifications from this site.
For the HP 6745C you can get the specifications from HP
The original HD is not specified so I'm not sure about the power requirements. The original hp 6745c ships with a 90 watt psu.
The swapping of the drives should be doable without a hitch.
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07-11-2006, 11:19 AM
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#25
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Senior Member
Registered: Jun 2004
Distribution: Arch, Debian, Slack
Posts: 1,016
Rep:
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Quote:
Originally Posted by linuxhippy
For the past 4 months I've run an mp3 server out of my basement on an old pc with a good size case and ATX motherboard that is meant for upgrading and for a server.
The HP is a Pavilion desktop model 6745C with a 20 GB harddrive. I want to swap this drive with the 80 GB drive (a Western Digital) that is currently in my server. The HP is on a micro ATX motherboard and has a small case which offers no room for upgrade...I don't think this pc was built to be a server.
The HP came with Win ME, so I'm thinking it's about 5 years old and my server is 9 years old.
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i have to say i really don't understand your objective in all this. i'm not saying you don't have a good one, just that i don't understand it.
if the mp3 server is running fine, why change anything? to me that's the first cardinal rule: if it's not broken, don't fix it. you'll only end up causing more trouble for yourself. at the most i would add more ram. it probably takes pc-100 sdram, which you can get dirt cheap, or even buy an old crap pc at a yard sale for $10 and cannibalize the ram. you might even get a usable case, network card, or hard drive out of the deal.
what is the planned purpose of the HP? i don't get why you want to take hard drive space out the server and put it in the HP. it's also a little confusing because at one point you said the HP has an 80gb hard drive, then you said it has 20, and also at first you said the server was P1 which others said is AT, then you say it's ATX. so the specs are all a little confusing, imo. you should just list the specs of each, and then state the objective. if what you're saying is that your objective is to make a server but you can't decide which one to use, i would use the current server machine b/c of the low PSU and possible heat issues of the HP, and just take out the ram from the HP and put it in the server along with both 80GB hard drives.
but i wouldn't spend money on a new PSU for a P1 200Mhz computer in the longest stretch of the imagination, especially if it is AT. for the money you spend on a new PSU for that old CPU, you could probably buy an entire 700-1000MHz used computer on ebay or a yard sale somewhere. it's ridiculous to spend money on such old hardware, imho.
gl 
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07-11-2006, 03:57 PM
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#26
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Member
Registered: Feb 2006
Location: Washington State
Distribution: Slackware
Posts: 42
Rep:
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Take a look at the slackware site pat tells u what runs that site and his servers u'd be surprised at how much better yr setup is than slackware's.
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