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Looking for a 400W PSU for average PC. - Page 2

post #11 of 22
Quote:
Originally Posted by Deverica Wolf View Post
If I am to get a new PSU, what's the highest I could go for Watts with my Motherboard? Money is not an issue. If I have to get a new one, that opens up the door for perhaps a better graphics card for me.
You can get a 1500W nuclear reactor PSU that costs $400USD if you *want*. Catch being, running a PSU at a minute fraction of load capacity gets you crappy efficiency.

Your motherboard has no impact on the maximum wattage rating of the PSU.
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post #12 of 22
Thread Starter 
Quote:
Originally Posted by Skripka View Post
You can get a 1500W nuclear reactor PSU that costs $400USD if you *want*. Catch being, running a PSU at a minute fraction of load capacity gets you crappy efficiency.

Your motherboard has no impact on the maximum wattage rating of the PSU.
Well...I obviously am not savvy with this. Just concerned about safety, what my comp. as a whole can handle without damage. That's an unrealistic amount of Watts for me. What I mean is, could a 500 to 800W be usable with no problems?
Edited by Deverica Wolf - 4/12/11 at 12:52pm
post #13 of 22
The system will only use as much of the wattage as it needs from what the psu can generate. It's like a car. You can drive a small 4 cyl 80 horsepower economy car at 65 mph and you can drive a high performance big block v8 400 horsepower Mustang at that same 65 mph. You only use as much of the potential power from the engine as you need for the task. It's essentially the same with a power supply.

There are points of diminishing returns though. In your case I wouldn't go much over 400 to 450 watts as you would never need that much power and you would be wasting money. That NeoEco that Phaedrus and I linked to would be an excellent choice and MUCH better than either of those two Rosewill Greens. Those Rosewills are nice psus, but not as good as that Antec NeoEco.
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post #14 of 22
Thread Starter 
Thank you everyone for your thoughts and suggestions. I did appreciate it all with will keep it for future reference. This will be my final question as I feel it has gone on too long. I will update once I've made a decision. I'm gonna repeat this question...

Quote:
PapaSmurf said: If it's running okay now I'm betting it can take those changes and still be okay. I would try it and see before wasting money on a psu upgrade you might not need.
Quote:
Deverica Wolf said: One question, though. What's the risk of damage for running a insufficient PSU? How will I know that if it's no good? If the PC won't start up, then, yeah, that's a no brainer, but if it is working, could it be doing secret damage inside?

PapaSmurf, I am still wondering about this. I'm now thinking maybe it would be good to get a 400PSU to be on the safe side. But is it possible to try my 300W with the new HDs first, like you said? What risks could it bring to my PC if it's not sufficient enough? That's my final question and if you could inform and that world be great. Thank you.
PC Link: http://www.premiumgeeks.com/desktop/...hpe-400f-specs
post #15 of 22
Quote:
Originally Posted by Deverica Wolf View Post
Thank you everyone for your thoughts and suggestions. I did appreciate it all with will keep it for future reference. This will be my final question as I feel it has gone on too long. I will update once I've made a decision. I'm gonna repeat this question...





PapaSmurf, I am still wondering about this. I'm now thinking maybe it would be good to get a 400PSU to be on the safe side. But is it possible to try my 300W with the new HDs first, like you said? What risks could it bring to my PC if it's not sufficient enough? That's my final question and if you could inform and that world be great. Thank you.
PC Link: http://www.premiumgeeks.com/desktop/...hpe-400f-specs
The risks are it will shut-down,or affect performance if not enough power.If it goes bad-that's another story.Your whole house is at risk
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post #16 of 22
Once you identified the actual PSU it's like Phaedrus said. It's old, outdated, and needs to be replaced. At best it would only cause instability, but at worst it could damage the other components in the system or possibly go up in smoke and/or catch fire (although that is an extreme case). I find it amazing that a company like HP would use such an outdated psu in a current system. I figured that it would be of a somewhat recent design and capable of running that system safely, but that concept was blown completely out of the water.

Basically, do what Phaedrus recommends. He's probably forgotten more about PSU's than 99.9% of the people on OCN and most other forums will ever know, and a lot of what those others know they learned from him, Tator Tot and a few others that do know what they are talking about.
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post #17 of 22
Thread Starter 
Yeah. Well the orginal PSU numbers that Phaedrus looked at are not the actual ones I have. I copied and pasted the first one from that website but took a second look at my label. It is the same PSU name and model number but I think I have a newer version...

Quote:
Orginal Post From Website
Bestec ATX0300D5WC
Output Max. Load
+5Vsb 2A
-12V 0.3A
+12V 13A
+5V 30A
-5V 0.3A
+3.3V 20A
Quote:
Actual PSU Stats On My Label
Bestec
Model: ATX0300D5WC Rev:B
+12V / 19A. -12V / 0.8A
+5V / 25A. +5VSB / 2A
+3.3V / 18A.
Quote:
Phaedrus said: Your current PSU is based on a design from 2002 or earlier, since it has a -5V rail. It probably dates 1999 or earlier, since the +5V is rated for 30A while the +12V is good for only 13A, a pattern indicative of an ATX 1.3 era PSU.
Are these both the same kind or is there a difference? (I know I said no more questions but sue me. One more.)
Edited by Deverica Wolf - 4/12/11 at 2:17pm
post #18 of 22
Get either two of these:
1> corsair vx450
2> antec high current gamer 400
both of thes are great psu
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post #19 of 22
Quote:
Originally Posted by Deverica Wolf View Post
Yeah. Well the orginal PSU numbers that Phaedrus looked at are not the actual ones I have. I copied and pasted the first one from that website but took a second look at my label. It is the same PSU name and model number but I think I have a newer version...

Are these both the same kind or is there a difference? (I know I said no more questions but sue me. One more.)
No, the specs on the second one (the rev. b) are more in line with an ATX 2.x psu which I would expect them to be using these days. While that isn't the best brand it wouldn't be nearly as bad. Unless Phaedrus knows something about the quality of the Rev. B it would probably be okay to try it with the new hard drives.

Quote:
Originally Posted by Aniket View Post
Get either two of these:
1> corsair vx450
2> antec high current gamer 400
both of thes are great psu
And overpriced compared to the Antec's linked to previously.
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post #20 of 22
Quote:
Originally Posted by Deverica Wolf View Post
Yeah. Well the orginal PSU numbers that Phaedrus looked at are not the actual ones I have. I copied and pasted the first one from that website but took a second look at my label. It is the same PSU name and model number but I think I have a newer version...







Are these both the same kind or is there a difference? (I know I said no more questions but sue me. One more.)
It may or may not be a revision of the same PSU. Hard to say. You could open it up and take pictures so I could make some guesses as to its approximate quality...
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