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Power Supply Load-loaded system

I am building a system and loading it up big time.  I am using a 300 watt ATX power supply (it's a good one). Here's what I plan to have in the system.
- Standard CDROM Drive,SCSI
- DVD/CDROM Drive Combo,IDE
- On Stream 30Gig Int. Tape drive,IDE
- CDRW Drive, SCSI
- Hard Drive, SCSI
- Syquest Syjet Removable HD, SCSI
- Hi-Val Super Disk Drive (120),IDE
- ASUS P3B-F Motherboard
- Pentium II-450, maybe a PIII-500
- 256 MB Memory
- Sound Card, PCI
- Adaptec 2940W SCSI card, PCI
- AGP All-In-Wonder 128 Video Bd (16MB)
- Network card, PCI
- 2nd Parallel card, PCI
QUESTION: Do you think this power supply will handle all this (I realize the drives won't all be running at the same time).
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JoeBoyd
Asked:
JoeBoyd
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1 Solution
 
JoeBoydAuthor Commented:
One side note: Do you think all this stuff will work together???
Thanks,
Joe Boyd
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MrbreezeCommented:
If the question is
"QUESTION: Do you think this power supply will handle all this (I realize the drives won't all be running at the same time"
The answer is yes even if they were all running at the same time
                      Mrbreeze

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BigMarkCommented:
Should work fine - can you post a picture of the case with all that stuff installed in it??  The way I see it you've listed 5 removable drives - hope gigantor goes together and works OK.  You may well have some conflict woes though...........



Good Luck


BigMark
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biardCommented:
I thought transformers were outdated! :)  At any rate, the power supply will be fine.  300 watts should be plenty.  I wonder what the system will be used for though.  Call me curious, but it really sounds like a Swiss Army Knife!
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bekayeCommented:
it ought to, what operating system will you use?
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JoeBoydAuthor Commented:
I'll be using Win 98 SE as the operating system.  To answer biard's curiousity:  I was waiting for some to make a comment about that.  I know it sounds like a government designed PC, doesn't it?  I am a computer consultant and I have customers that have various devices so I am kinda of using this as a "test" bed type machine to try and use different.  I have one customer who's using the tape drive, another Syjets (I exchange data with them).  I wanted a DVD drive but I thought my Plextor SCSI was faster as a CDROM drive than the CDROM part of the DVD drive (I hate to wait haha).  As far as the Hi-Val Super Disk - I guess I just wanted a fast floppy and the ability to use the 120 MB capacity disks.  I didn't list it on here but I am going to be adding an external parallel Iomega Zip drive to LPT2 (if I can get it to work on LPT2 - they can be triggie on LPT2).  So, there you have it.
Joe Boyd
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MrbreezeCommented:
Joe,
So was your question answered. Maybe you would like to pick the comment that most suited you and award the points to these hard working experts...LOL...
                         Mrbreeze
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mark2150Commented:
If you're going to run this as a test bed you'ld be better off running two or three different systems instead of this all-in-one monster. You'ld never be sure that the problem is with the configuration or with the software. If/when you get this all running, I think you'll find that the configuration might be "fragile" and that there are simply too many variables for a testing system.

Power supply issues are the least of your worries. You're going to have fun with *eight* different drives in that puppy - forgot the 3-1/2" floppy didn't you! - Where are you going to *mount* them all?

Most of the 300W from your P/S is in the form of +5. However, the drive motors all run on +12. This may cause problems at startup when *all* drives attempt to spin up at once. This throws a *huge* inductive load onto the +12V line and even tho the drives aren't taking near 300W you may so load down the +12V line that the power supply goes into shutdown thinking that the +12 is overloaded (which it is).

M
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biardCommented:
You might want a floppy drive in there too.  The 120 drive is faster with 120 disks, but it is much slower with regular floppies.
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JoeBoydAuthor Commented:
Yes, I do want to pick an answer.  To be honest, I like "Mark2150's" detailed answer.  It really helped a lot and helped educate me.  The rest of you helped also, thanks.

BUT, here's another dilemna.  The comment "Biard" left about the Hi-Val Super Disk drive was extremely helpful.  I thought this drive would be faster on regular floppies also.  What a surprise!!  

So, here's my problem:  I want to accept Mark2150 comments but at the same time I want to give points to Biard (and not take away the 65 for this question).  How can I do this (sorry, a little new here).  Do I have to add another question so he can respond to it and then select his answer?  Please advise someone.
Thanks,
Joe Boyd
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biardCommented:
You can either do that or go to the ee community support forum.  They can distribute points for you.  Glad to help.
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MrbreezeCommented:
So the question wasn't really
"QUESTION: Do you think this power supply will handle all this"
but in fact
"One side note: Do you think all this stuff will work together"
Glad to see you got what you needed though, good luck on that monster
                         Mrbreeze
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JoeBoydAuthor Commented:
The answer was very through and detailed and that's exactly what I like.  The answer was more than just yes it can..  I more or less figured it could, but, I wasn't sure.  But this answer gave me a lot of insight into the situation with the power supply, eg. I didn't think about the startup current draw.  Thanks
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