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Will a Dell 305W PSU Handle a Pentium D + 9800GT Eco?

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December 25, 2009 11:37:36 PM

Hi,

I wanted to put a Pentium D chip into my old Dell PC, for semi-gaming like MW2 and others for when friends come over so I can go LAN with them.

Now, the dell has a 305 stock PSU. It also has a Pentium 4 CPU. The Pentium D CPU I want to add needs 95W's of power to juice it. + Around 60W's for the GPU. Would the PSU blow out if trying to use the CPU/PSU on full load? The system has 4x512MB of DDR2 aswell.

Thanks!
December 25, 2009 11:52:54 PM

Hmm, hard to say. Dells PSU,s are designed better than most think but
over time it may give out.

What are the 12vlt rail specs?
December 26, 2009 12:35:10 AM

sirheck said:
Hmm, hard to say. Dells PSU,s are designed better than most think but
over time it may give out.

What are the 12vlt rail specs?


Delluser1 once told me it was 18A.
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a c 248 ) Power supply
a b à CPUs
December 26, 2009 7:37:05 AM

The official Nvidia recommendation for a system with the 9800GT video card is a 350 watt or greater power supply. Video card manufacturers typically recommend a higher wattage. For example, BFG recommends a 500 watt power supply.

Here is a link to a technical review showing actual system power consumption:

http://www.hardwarezone.com/articles/view.php?id=2688&c...

Note - There are many different versions of the 9800GT and they have different power requirements.

a c 92 ) Power supply
a c 87 à CPUs
December 26, 2009 7:43:08 AM

Dell 305 = 22A total between both rails, while the Dell 375W has 30A. You should be fine with the 9800GT, the eco model even better.
a c 243 ) Power supply
a b à CPUs
December 26, 2009 3:35:23 PM

godbrother said:
Delluser1 once told me it was 18A.

18a x 2 rails, with 22a combined total, as was already pointed out.
December 27, 2009 11:55:43 AM

delluser1 said:
18a x 2 rails, with 22a combined total, as was already pointed out.


O sorry :)  So just to confirm... A Pentium D 820 (100W) should also do fine with this setup... On this PSU? Also, when I switch out the CPU for my system, does it void the warrenty? It still has like 1 years warrenty on it.

Thanks.
a c 243 ) Power supply
a b à CPUs
December 27, 2009 1:04:41 PM

godbrother said:
So just to confirm... A Pentium D 820 (100W) should also do fine with this setup... On this PSU? Also, when I switch out the CPU for my system, does it void the warrenty? It still has like 1 years warrenty on it.

Thanks.

First , what model Dell are we talking about again, the 520 ?

PD 805 system with 7800 GTX pulls 211watts from the wall
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=273...

7800 GTX max power 100 watts ( your 9800 GT "Eco" can be no more than 75 watts max )
http://www.gpureview.com/show_cards.php?card1=310&card2...

211 watts from the wall (AC) equals about 160 watts from the psu (DC), using 75% as the efficiency factor.
Shouldn't be a problem for the 305w.

You won't void the warranty, if you don't tell them about the upgrade and save the original chip.

December 28, 2009 6:59:18 PM

Hi Delluser1.

Thanks for the post, that was really helpful. I do have one question though, not sure if this was the P4 bottlenecking the GPU or what. When I first installed the 9800GT Eco into the system, everything was fine with no problems. It even gamed good.

But then I noticed a problem, with MW and MW2 for example. The game would start to freeze, or become unstable. It would lag incredibly, and sometimes the whole PC would freeze up with no way to turn of the game, or operate to the Task Manager so I would have to switch of the PC from the mains, and back on again.

I was extremely concerned that it was the PSU that was under-powering the system. But I'm not superman with all this, was that the case?

PS: The system is a Dim-5100.
a c 243 ) Power supply
a b à CPUs
December 29, 2009 2:12:28 AM

Those could be signs of a failing psu.
Download OCCT and run the psu test.
December 29, 2009 4:36:53 AM

O, nevermind :)  What do I do with it though? Set it to 1hr and leave it alone?
December 29, 2009 4:41:23 AM

Jesus christ... I left the test running for 4 minutes and my GPU reached 75 degrees!! It's never gone above 45. What gives? Is this thing going to fry my whole PC or somthing?
a c 243 ) Power supply
a b à CPUs
December 29, 2009 9:51:26 AM

godbrother said:
O, nevermind :)  What do I do with it though? Set it to 1hr and leave it alone?

I've never tried running it for an hour on such an old psu, I would think that 15 mins or so would be more than enough time for your system to glitch out the way you have described.

Quote:
What gives? Is this thing going to fry my whole PC or somthing?

Going to ? Don't know, but it will try.
It's putting your components to work at max power, if it fails, you need a new psu.


December 29, 2009 11:35:00 PM

delluser1 said:
I've never tried running it for an hour on such an old psu, I would think that 15 mins or so would be more than enough time for your system to glitch out the way you have described.

Quote:
What gives? Is this thing going to fry my whole PC or somthing?

Going to ? Don't know, but it will try.
It's putting your components to work at max power, if it fails, you need a new psu.


Will dells warrenty cover for a new PSU? I would happily fry it on purpose :D  (If you teach me how... :o ) I paid 300 bucks warrenty and never used it. :( 
!