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January 18th, 2008 20:00

XPS 420 and 425w power supply

As of today, the only way to get the 425w power supply is to order the High Powered Performance Bundle. This is the only bundle that has the 768MB nVidia 8800GTX video card.
Message Edited by DELL-ChrisM on 02-01-2008 08:07 AM


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DELL-Chris M
#IWork4Dell

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54.4K Posts

February 1st, 2008 12:00

RainDIPset,

well now that the 8800gt 512 is not offered any xps420 besides the highest one, i was wondering if this was a power supply issue of some sort?
* No. No issues. The 375w power supply is validated with the 8800 GT video card.

21 Posts

February 1st, 2008 13:00

and what is the AMP rating on this power supply?

3 Posts

February 1st, 2008 16:00

Ok - I ordered my XPS 420 on January 30.  According to the estimated ship date, it should be ready to go Feb. 13.

 

At that time, I ordered the 512 video card.  I was assured at one point by a sales chat person that the power supply would be the 425w because of the video card I chose.

 

My question is this - because I ordered the computer before today, will it have the 425w unit as promised?

 

If not I am going to be ticked......

200 Posts

February 1st, 2008 20:00

Dell desktop power supplies are OEMed by Channel Well, I believe. Wattage isn't very important. It is the power on the 12V rails that is important. I would assume that the 8800GT, being biased on a 65nm chip, would be more efficient and use less power.

First, Dell rates their power supplies differently than everyone else.
The industry uses peak output, so a 450W power supply can sustain that
only for a short period of time.
Dell rates theirs using sustained power output, so the 375W power supply
is closer to a 500 or 600W peak power supply. Dell engineers have. no doubt, put a lot of thought into power and cooling.

Personally, I believe Dell builds the system good enough to handle the components installed. If they didn't they would have to replace a lot of power supplies and ,while they have a pretty high repair rate, I don't think they will intentionally cause themselves more trouble by using a power supply that isn't good enough for the system.

705 Posts

February 1st, 2008 20:00

well put...

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1.1K Posts

February 1st, 2008 21:00

that tech was probably wrong but oh well you got the 425.  It is common knoledge that dell's power supplies are under rated.

131 Posts

February 1st, 2008 21:00

If Dell underrates their PSU compared to other industry ratings, where can that info be found. If the 375w can handly everything why would they even introduce the 425 in the first place. I think the point here is everybody just wants the latest and greatest for their systems. I don't know about you but i would rather have a 425 over a 375 any day. If they never had both psu available I wound't care much. I personally talked with a dell support tech and he specifically told me that all the issues that i was expieriencing the second day with my system was due to the instability of the 375w. If that wasn't the case they would have not sent me a 425w to replace my 375w.

3 Posts

February 1st, 2008 21:00

Underrated or not, all I care about is that this thing works like it should and does not give me any troubles. 

 

I have read several posts on these forums and user reviews on the web about how the 375w power supply caused troubles and after a long, intensive conversation with Dell over the phone, it was traded out for the 425w.

 

This is going to be a business computer and we can't afford for it to be down.

 

I hope you are right and that all works well!!

 

:smileywink:

 

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1.1K Posts

February 1st, 2008 22:00

absolutly, you are better off with the 425, but that doesn't mean the 375 isn't anygood.

11 Posts

February 2nd, 2008 20:00

WOW... That is one thing... I hope I never have to replace this power supply!!!! I am sure I will have to or atleast replace my wifes XPS 400 PSU, due to a better video card. She currently has a 6800 and I am thinking of getting her a new one soon. But that will require a larger PSU than what she has, and it is wired sooo nice and neatly right now!!!

131 Posts

February 3rd, 2008 03:00

Tiger9801,

 

Changing the PSU and routing the wires how it looked from the factory was not difficult at all. I swapped out my 375 and replaced it with the 425 with ease. Definately everybdoy can do this as long as you can remember how it looked or take pictures before diconnecting everything.

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1.1K Posts

February 3rd, 2008 05:00

tiger,

be aware that swapping out your PS will invariably void the warranty.  or atleast limit the kind of service you can recieve in the case you have an issue, however if your warranty is already up, go for it!

200 Posts

February 3rd, 2008 05:00

Because the lower one works just fine in most configurations. It's also better on costs, and I'm guessing you'll come back and say "well, just have them put the higher one for more money as an option." Well, if they do that, then people will come here and ask which one they should buy.

35 Posts

February 3rd, 2008 05:00

re:

"First, Dell rates their power supplies differently than everyone else.
The industry uses peak output, so a 450W power supply can sustain that
only for a short period of time.

"

 

Not sure I fully agree with that statement. The likes of Antec, Corsair, and Seasonic, and Thermaltake, brands which many people would consider when building there own PC, certainly don't do that.

 

 

re:

"Dell rates theirs using sustained power output, so the 375W power supply
is closer to a 500 or 600W peak power supply. Dell engineers have. no doubt, put a lot of thought into power and cooling.
"

 

One hopes so!

 

At the same time, this seems such a sticky topic for many people that I don't see why Dell is so stingy on making the higher wattage PSU standard, or at least selectable.

35 Posts

February 3rd, 2008 14:00

re:

"Because the lower one works just fine in most configurations. It's also better on costs, and I'm guessing you'll come back and say "well, just have them put the higher one for more money as an option." Well, if they do that, then people will come here and ask which one they should buy. "

 

It's just another choice... just like memory speed, cpu, etc.

 

Also bear in mind that many people will upgrade the system over it's lifetime and that extra power could be useful down the road.

 

It seems clear that many people on this forum would like to be able to make that choice without being tied to rigid configurations.

 

 

 

 

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