Power Supply for Pentium D820

junk · Post by **junk** » Fri Oct 21, 2005 2:31 am

hi...i recently bought a case and power supply
for a new computer i am planning to build...
i am new at this...and want to check if this power supply
will work with the P D820 2.8 CPU....

the thing i have read that worries me is taht i dont know
if there is enough amps on the 12V rail on my power supply.

there are 17A on the 12V rail.
overall its a 480W supply, but i read somewhere i might
need more power on the 12V rail.

am i screwed, or will this power supply be sufficient
thanks

Post by **Apoptosis** » Fri Oct 21, 2005 8:35 am

My advice:

12V Rail: The most important get the most you can and try to get split rails
Main Power Connector: - Make sure it is 24-pin
Voltage Tolerances: -5VDC and -12VDC should comply to ± 10%, not ±5%.

What brand PSU and model number did you get?

junk · Post by **junk** » Fri Oct 21, 2005 10:59 am

this is the case and PS...
not sure what brand

http://www.geeks.com/details.asp?invtid ... =SCH&srm=0

Post by **Illuminati** » Fri Oct 21, 2005 2:47 pm

Comparing it to the Antec True Power 2.0 480Watt PSU, you have 17A on the +12 rail and the Antec has 18A...

So I'm not the most knowledgable person on this, but my best guess is that you will be just fine with your current 480 Watt PSU.

killswitch83 · Post by **killswitch83** » Fri Oct 21, 2005 11:31 pm

welllllll.........if you had the money to spend on a superb power supply, I would go with the OCZ PowerStream 600W, which can be found at Performance PC's. Not sure if it's a split-rail or two separate rails on the 12v side, but one side is rated at 20A and the other at 18A, definitely enough to handle whatever you can throw at it!! Alas, it doesn't come cheap...at Performance PC's it starts at around $230, but very stable, and I've read and heard good things about this PSU. This is what I'll be using with my system build, except mine will be around 350 or so due to the complete UV kit- sleeving, molex and main power connectors and all. I plan on trying to replace the green LED fan in the back with a high-flow fan with a blue LED (if it's possible without getting fried myself, lol). But that's my take man

Note: Performance PC's does the sleeving service for you, and actually asks what color sleeving and heatshrink you want....a good deal if you ask me. It's just the UV reactant power connectors that costs, lol.

kenc51 · Post by **kenc51** » Mon Oct 24, 2005 8:17 am

The powerstream 600W is overkill for nearly ALL systems

go for the powerstream 520W

or any good Antec/Fortron PSU would do (there is alot of good PSU makers... and alot of very poor PSU makers!)

JasonE4 · Post by **JasonE4** » Mon Oct 24, 2005 10:32 am

Illuminati wrote:Comparing it to the Antec True Power 2.0 480Watt PSU, you have 17A on the +12 rail and the Antec has 18A...

So I'm not the most knowledgable person on this, but my best guess is that you will be just fine with your current 480 Watt PSU.

The TP 2.0 480W is a great power supply and has two 12V rails. It actually has 36A altogether on the 12V rails. The TP would be great for your system, and the one you currently have probably won't be able to handle it.

gvblake22 · Post by **gvblake22** » Mon Oct 24, 2005 9:33 pm

JasonE4 wrote:
Illuminati wrote:Comparing it to the Antec True Power 2.0 480Watt PSU, you have 17A on the +12 rail and the Antec has 18A...

So I'm not the most knowledgable person on this, but my best guess is that you will be just fine with your current 480 Watt PSU.
The TP 2.0 480W is a great power supply and has two 12V rails. It actually has 36A altogether on the 12V rails. The TP would be great for your system, and the one you currently have probably won't be able to handle it.

I'll agree with that. The Antec TPII PSU's are nice and have a very reasonable price tag. Antec has also released the new New HE High Efficiency PSU that has active PFC, comes with cable sleeving, is modular, quiet operation, and TRIPLE (yes 3) 12v rails! You can also check out the Fortron 500w Blue Storm; that's what I have and I really like it. The newer Seasonic PSU's have also been getting good reviews. Of course, the OCZ Powerstream 520 is always a safe choice, as well as the PC Power & Cooling 510w units (if you have the $$ that is).

Overall, just give that no-name brand PSU a shot when you get it in and see if it works. If you get random reboots and overall instability with low voltage measurements on the seperate rails, then you'll want to look into bumping up to a better powersupply. But just because it seems to be powering your system now, doesn't mean that it will stay that way. Those cheap PSU's, especially the ones that come with cases, are indeed really cheap and they often fail quickly and can even bring down the rest of your system with it, so be careful!

It will also depend a lot on what other components you have installed in your system. If you have a couple HDD's and optical drives, 3-5 good case fans, two 7800GTX's, and water cooling, you're probably gonna want to jump right into a better power supply and not even bother installing that one. But if you have your P D820 and a single 7200rpm HDD, a couple optical drives, a single midrange graphics card (6600GT or similar) and only 2-3 case fans, you may be able to get away with your generic PSU that came with that case. But again, I just question it's quality and I personally don't like to chance my expensive components to a chincy PSU that could have a meltdown and bring the rest of my computer down with it...

EvilCloudStrife · Post by **EvilCloudStrife** » Wed Nov 30, 2005 2:24 pm

these things are powerhogs for sure. i would recommend the OCZ 520W or 600W Powerstream. that should take care of it for sure. OCZ makes quality products