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New Motherboard and Power Supply Questions

Old 06-03-04, 05:01 PM
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New Motherboard and Power Supply Questions

Ok, so I have an HP Athlon XP 3000+ with a 250w power supply. I have a 340+ watt demand. I need a new power supply but the "experts" at HP say I need a new motherboard or the chip will be fried by the extra power. I'm a computer n00b in this area, so no idea what all this means.

What is a good motherboard to handle a 450w supply, and I'll also need a new case I guess. What is a good 450w power supply?

Finally, if I decide to buy a new PC, do any of them have high power supplies?
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Old 06-03-04, 05:13 PM
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The HP guy is full of crap.

Any of the big name power supply makers are fine. I have a 480W "TruePower" Antec and it's working great. It doesn't turn off the fan in suspend mode though, and the temperature sensitive fan isn't all that quiet at low loads.
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Old 06-03-04, 05:23 PM
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It is possible the motherboard wasn't rated to handle enough power for a 3000+ and some add-in boards. A 250w power supply is very small.

But if it came in the same configuration you now have it wouldn't matter if you stuck on a more powerful power supply -- the motherboard will just draw what it needs.

Why all of a sudden do you have a 340+ watt demand? What did you add? A power-hungry video card?
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Old 06-03-04, 05:25 PM
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Originally posted by X
It is possible the motherboard wasn't rated to handle enough power for a 3000+ and some add-in boards. A 250w power supply is very small.

But if it came in the same configuration you now have it wouldn't matter if you stuck on a more powerful power supply -- the motherboard will just draw what it needs.

Why all of a sudden do you have a 340+ watt demand? What did you add? A power-hungry video card?
I added a Geforce FX 5200 AGP card (75 watts) and a Lite On DVD-RW (25 watts)
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Old 06-03-04, 05:26 PM
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Originally posted by asabase
The HP guy is full of crap.

Any of the big name power supply makers are fine. I have a 480W "TruePower" Antec and it's working great. It doesn't turn off the fan in suspend mode though, and the temperature sensitive fan isn't all that quiet at low loads.
So I could buy a new power supply today and installing it wouldn't effect my motherboard in a negative way?
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Old 06-03-04, 05:37 PM
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Originally posted by nickdawgy
I added a Geforce FX 5200 AGP card (75 watts) and a Lite On DVD-RW (25 watts)
I can see they would add a load to that puny power supply. However only the video card gets its power through the motherboard. It doesn't have an external power connector, does it? In that case power wouldn't have to be routed through the motherboard.

However it still doesn't seem like enough of a load that any motherboard wouldn't be able to handle it. You could always buy a new one if traces on your current one burned out.
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Old 06-03-04, 05:38 PM
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Ok, here are 2 power supplies, which can I use?


Antec TruePower 430-Watt ATX CPU Power Supply


430-watt, 6-output ATX (Baby AT or PS/2 size) power supply

Designed to power standard fans

Dual-fan cooled

+5V transient response

ATX 12V compliance for use with Intel® Pentium® 4 processors

Backward compatible ensures usability with any system

Antec Low Noise Technology for reduced system noise and necessary cooling

or

Antec Solution Series SmartPower 400-Watt ATX CPU Power Supply

400-watt, 6-output ATX (Baby AT or PS/2 size) power supply

SmartPower technology allows the power supply to run cooler and quieter by adjusting the fan speed

Dual-fan cooled

+5V AC-On Standby and Logic On/Off control

Suitable for AMD and Intel® based systems

What does backwards compatible mean? Does the first one only work in Intel based systems?
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Old 06-03-04, 05:41 PM
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I have an 350w Antec power supply that is powering more stuff than you have on your system. Either of those power supplies will work.

Backward compatible probably means they have particular connectors.
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Old 06-03-04, 05:41 PM
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Originally posted by X
I can see they would add a load to that puny power supply. However only the video card gets its power through the motherboard. It doesn't have an external power connector, does it? In that case power wouldn't have to be routed through the motherboard.

However it still doesn't seem like enough of a load that any motherboard wouldn't be able to handle it. You could always buy a new one if traces on your current one burned out.
No it doesn't have an external connector. The site I checked the power supply demand said this was if all were running at peak, which is unlikely, but you know the old better safe then sorry saying.

Plus, I have a crapload of blue screens, restarts, etc. A new power supply would almost certainly fix that. Everyone I tell my problem to says it's either the PSU or bad RAM and I already tested my RAM in another system plus the many online tests said it's fine.

So If I buy a new PSU, and the problems persist, I'll have to have HP replace the PC, and I'll just take the PSU back to the store. You can do that, right?
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Old 06-03-04, 05:42 PM
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Originally posted by X
I have an 350w Antec power supply that is powering more stuff than you have on your system. Either of those power supplies will work.

Backward compatible probably means they have particular connectors.
So the 400w will do fine then? It's $80 at Best Buy. I realize I could probably save myself $20 or so going through Newegg, but I just want this problem dealt with ASAP.
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Old 06-03-04, 05:43 PM
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Sure, try the 400 and return it to Best Buy if it isn't enough. Antec's are very conservatively rated.
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Old 06-03-04, 05:44 PM
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So how hard will this thing be to switch? Does it take an expert or is it a simple process? I've never had a problem installing any hardware before, but it's just been hard drives, RAM, pci or agp cards, and CD/DVD-Rw's and the like.
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Old 06-03-04, 05:46 PM
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Originally posted by X
Sure, try the 400 and return it to Best Buy if it isn't enough. Antec's are very conservatively rated.
If it does mess up the motherboard (which I doubt it will since you guys say it should be OK) how will I know? Will there be some sort of burning smell? Will I hear a loud boom? Will I see sparks? Or will my PC just die on me?
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Old 06-03-04, 05:46 PM
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Not knowing your HP, I don't know. I hope it doesn't use a proprietary design.
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Old 06-03-04, 05:47 PM
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Originally posted by X
Not knowing your HP, I don't know. I hope it doesn't use a proprietary design.
What is that?
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Old 06-03-04, 05:48 PM
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The guy said that if I tried more then a 250w PSU on the PC, it'd fry the chipset. Then the other guy said a new motherboard and chassis would be required.
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Old 06-03-04, 05:48 PM
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Oh and another thing, my board is always running warm, according to this hmonitor program. I have the side case off, but it doesn't seem to be making a difference. How can I cool it down?
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Old 06-03-04, 05:51 PM
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Adding fans to the case. If you have openings for them.
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Old 06-03-04, 05:53 PM
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Originally posted by X
Adding fans to the case. If you have openings for them.
Knowing HP, they probably didn't leave enough room.
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Old 06-03-04, 05:57 PM
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Also, would the forementioned PSU fit in my case? Are they all pretty much the same size?
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Old 06-03-04, 06:13 PM
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Would it just be better to pay $129 for an Antec case with a 400w PSU included? Then just buy a new motherboard? What should I look for in a motherboard, I mean what is good and what is bad?
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Old 06-03-04, 06:35 PM
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Check this case out. It's what I have and it's handling a motherboard with an overclocked Athlon, most PCI slots populated, 5 hard drives, 3 optical drives, and a tape backup.

http://www.newegg.com/app/ViewProduc...129-122&depa=0

Maybe you can still use your existing motherboard in it.
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Old 06-03-04, 06:54 PM
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The guy said I'd need to replace my SMPS to change the power supply.

Then he comes back and says HP's are only tested with 240w power supplies, and I might burn out the system. He suggests (of course) I take it to an authorized HP service center.

Yeah...and pay $300? No thanks.
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Old 06-03-04, 06:56 PM
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Originally posted by X
Check this case out. It's what I have and it's handling a motherboard with an overclocked Athlon, most PCI slots populated, 5 hard drives, 3 optical drives, and a tape backup.

http://www.newegg.com/app/ViewProduc...129-122&depa=0

Maybe you can still use your existing motherboard in it.
The Antec one on Best Buy seemed cool. It was black. Like I said, I know Newegg is cheaper, but I hate waiting for stuff to be shipped, and I want to fix this problem ASAP. So Best Buy looks like where I will be going.

So say I do buy a new motherboard, what do I need for my system? What is compatible?
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Old 06-03-04, 07:28 PM
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http://h10025.www1.hp.com/ewfrf/wc/g...ame=c00069442&

There is my current motherboard specs...

what is a good one, similiar to that that would hold a 430w power supply?
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