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Question about very old system with old PSU

post #1 of 8
Thread Starter 
Alright so I am making a retro machine and I'm pretty excited I want to put Windows 7 on an old machine and see how it does The only thing that concerns me is if I have enough power for this old thing using an old PSU

It is a server board with dual 1.4GHz P3's, 3.5GB of PC133 ECC RAM (3.3V) and an AGP 6600GT 128MB.

My question is, since I don't want to use a modern power supply on an old system, the best ATX V1.3 PSU I have is an old FSP 300.

it has 28A on the 3.3V
30A on the 5V
18A on the 12V

Does this sound like enough for this thing? (Not very knowledgeable when it comes to old PSU's)
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CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
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Thortech Thunderbolt 650W Antec 200 
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post #2 of 8
Sounds about right, you need much more 3.3v and 5v on an older P3 rig than you will with later P4 or higher ones. If you do replace the PSU, then a CX430 would be perfect, as they have some beefy 3.3v and 5v.
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by allikat View Post
Sounds about right, you need much more 3.3v and 5v on an older P3 rig than you will with later P4 or higher ones. If you do replace the PSU, then a CX430 would be perfect, as they have some beefy 3.3v and 5v.
Thank you. So, using a modern power supply would be alright? I figured the PSU wouldn't like that much crosslading. Cause I have an EA430
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(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
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Reply
Keeps me warm
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
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Reply
post #4 of 8
Thread Starter 
Also, this mobo (believe it or not) has a 24 Pin power plug in it and also a 6 Pin (Suuuuuuper old!) What I am wondering is...The PSU only has a 20 Pin but it also has a 6 Pin too, should I plug in the 6 Pin or do I not need it?
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CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
  hide details  
Reply
Keeps me warm
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
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Reply
post #5 of 8
Actually the CX430v2 would be a poor choice. A CX430 or CX430v2 would do fine on an early Pentium 4, but they are not designed for the high +5V load of a Pentium 3 system. The +12V/+5V ratio would go out of what it was designed for and voltages would go out of spec.

You need an ATX 1.3 PSU for that system.
post #6 of 8
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
Actually the CX430v2 would be a poor choice. A CX430 or CX430v2 would do fine on an early Pentium 4, but they are not designed for the high +5V load of a Pentium 3 system. The +12V/+5V ratio would go out of what it was designed for and voltages would go out of spec.

You need an ATX 1.3 PSU for that system.
Thank you! That is what I thought. But I'm still curious if I need the 6 Pin plugged in or not
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CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
  hide details  
Reply
Keeps me warm
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
  hide details  
Reply
post #7 of 8
If you've got a 6-pin and it has a spot for a 6-pin, use it.
post #8 of 8
Thread Starter 
Sweet. Thanks again Phaedrus! Lets see how this thing handles Windows 7
Keeps me warm
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
  hide details  
Reply
Keeps me warm
(14 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500K @ 4.4GHz Asus Sabertooth P67 HIS IceQ Radeon HD 7950 3GB 16GB G.Skill Ares @ 1600MHz 
Hard DriveCoolingOSMonitor
500GB Seagate + 1TB Samsung Corsair H80 Windows 7 Ultimate 64 Samsung 23" 1920x1080 
PowerCase
Thortech Thunderbolt 650W Antec 200 
  hide details  
Reply
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