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Power Supply Upgrade

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June 30, 2009 7:57:55 AM

Is it possible for me to upgrade the psu in my current computer with an aftermarket product?

I'm currently using a Dell XPS420 with L375P-00 power supply, aka. the Dell 375 watt power supply.

I want to upgrade my power supply to one with at least 500+ watts in order to have the required power to support more powerful graphics cards, since I use the computer for avid gaming.

I've been looking at name brand PSUs with alot of power like this one:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Unfortunately, I'm not able to figure out what psus would be compatible with my setup and fit correctly in the case. I have heard something about certain dell model's being proprietary so that you can only use their psus?

More about : power supply upgrade

a b ) Power supply
June 30, 2009 8:16:07 AM

I guess this PSU is the best bet...
PC Power & Cooling Silencer Dell Upgrade PPCS500D 500W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail
10% off w/ promo code "psu10saving”, ends 6/30
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
June 30, 2009 8:17:57 AM



i have looked on the web and it says that a standard powersupply will fit in your case-

check the measurements though as dells are fussy on size
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a b ) Power supply
June 30, 2009 8:19:30 AM

Dell psu's are proprietary (ie, needlessly different than standard), as are many other of their parts including anything that connects to the case front panel.

Here is one solution:

http://www.pcpower.com/products/description/Silencer_50...

Another rather messy solution that might work is to use a second power supply. You'd have to mount it perhaps on top of the case, establish a common ground, and extend the wires for (eg) auxilliary vid card power into the case.
June 30, 2009 8:33:01 AM

Twoboxer said:
Dell psu's are proprietary (ie, needlessly different than standard), as are many other of their parts including anything that connects to the case front panel.

Here is one solution:

http://www.pcpower.com/products/description/Silencer_50...

Another rather messy solution that might work is to use a second power supply. You'd have to mount it perhaps on top of the case, establish a common ground, and extend the wires for (eg) auxilliary vid card power into the case.



some are, some are not

the xps does user a normal atx 24pin / 4 cpu pin psu
a c 144 ) Power supply
June 30, 2009 3:21:31 PM

I thought that Dell got away from proprietary PSU's (nonstandard power connectors) in the last few years.
June 30, 2009 4:01:14 PM

There are certain Dell PIII/P4 systems that use proprietary PSUs, but anything modern is ATX standard.
June 30, 2009 5:47:01 PM

Thanks for the info!
a b ) Power supply
June 30, 2009 5:51:24 PM

Then I guess PCP&C listing the XPS420 as compatible with its Dell-format psu is a mistake?
June 30, 2009 7:54:24 PM

Its a way of selling more.

Also some psus have the power connectors up tight so they wont fit comfortably but wiring internally are the same - depends if you can get a cable round the fancy cable management systems.
a b ) Power supply
June 30, 2009 9:27:34 PM

Hellboy said:
Its a way of selling more.


Really? They sell one line of Dell replacement psu's. They are either wired for Dell, or they are not.

Which is it?
June 30, 2009 10:11:42 PM

The current psu has the atx 24-pin power connector connected to the motherboard, and the corsair psu's specs seem to show that it has everything I need in terms of connectors, however I'm not sure how proprietary the case itself is, and if it would fit in the case properly, or at least manage to with some tweaking or something to hold it in place.
a c 88 ) Power supply
June 30, 2009 10:25:05 PM

Dell got away from using "special" PSUs when the P4 came out. Their current lineup all use standard ATX PSUs, at least electrically. I'm not sure if they still use some none standard form factors.

The Dell 375W is a rather powerful PSU. It has 30A on the two 12V rails. What are you trying to run that takes more power? You probably can't run the GTX cards, but the GTS and lower should all work. (You'd be cutting it close with the GTS250/9800GTX+)
June 30, 2009 10:29:19 PM

I'm going to possibly be purchasing a 260gtx or price equivalent ati radeon.
a c 88 ) Power supply
June 30, 2009 10:41:56 PM

The 4770 of course will run in there with ease. I can't remember at the moment if the 4850/4870 need more then 30A. Even if they need 30A, you have exactly 30A available, so you should upgrade. Find a normal ATX PSU and make sure it fits, and watch out for those longer ATX PSUs. I think the longer ones are primarily 1kW and above, so you probably won't see any in the 500-650W range.
June 30, 2009 11:31:10 PM

You need a new case... or a lot of patience and a good Dremel if you want to put generic hardware in your... SPECIALLY DESIGNED... computer. The dimensions are all custom made for Dell hardware.

I know it personally, I have dealt with it for a customer >:p 

July 1, 2009 11:28:19 AM

^+1... Oh dear, another user finding out that Dell didn't want you to do anything to your PC when its time to upgrade, they want you to buy another one!
Of the few Dells i've seen inside all are a pain in the a$$. They mount their stupid proprietory mobos with non-standard panel connectors on the other side of the case - I was helping a mate fit a new GFX card to his Dimension and we had to take the 2 slot backplate off the card and saw it in half so we could get it in!! Their PSUs have odd length cables to fit their wonderful custom cases, you'd probably be ok putting a std PSU in, but you'll probably have to drill new holes to screw it in and the PCIE power for example probably wouldn't be long enough to go round the way Dell wanted it too!
It can be done, although as a hater of Dells I'd be tempted to get a new case and mobo and throw the Dell stuff away!
*Don't buy Dell!*
a c 243 ) Power supply
July 1, 2009 11:50:57 AM

redgarl said:
You need a new case

No he doesn't.
a c 243 ) Power supply
July 1, 2009 11:52:52 AM

MMclachlan said:
Their PSUs have odd length cables to fit their wonderful custom cases, you'd probably be ok putting a std PSU in, but you'll probably have to drill new holes to screw it in and the PCIE power for example probably wouldn't be long enough to go round the way Dell wanted it

You're right on some of it, but there's no need to drill any holes.
a c 88 ) Power supply
July 1, 2009 2:08:08 PM

Quote:
I was helping a mate fit a new GFX card to his Dimension and we had to take the 2 slot backplate off the card and saw it in half so we could get it in!!


You went through all that instead of buying the proper half height video card? Weird.
a c 243 ) Power supply
July 1, 2009 2:30:41 PM

4745454b said:
Quote:
I was helping a mate fit a new GFX card to his Dimension and we had to take the 2 slot backplate off the card and saw it in half so we could get it in!!


You went through all that instead of buying the proper half height video card? Weird.

Sounds more like he fit a dual slot card into a mBTX system.
July 1, 2009 2:36:15 PM


I get the same, i went to a customer today who thought downloading the free edition of AVG is better than the purchased version from Kaspersky.

a c 88 ) Power supply
July 1, 2009 9:43:00 PM

This is why I always ask people to qualify better. Free AVG is better then paid Kaspersky as it costs less. See, its better. If you mean better as in virus detection and removal, that belongs to Kaspersky. You can't just say better.
July 1, 2009 10:07:33 PM


I know,

He was a cocky 20 something. thought he was flash buying his boss a mcdonalds

I just looked at him for a second with no expression and ignored him


Sorted the server issue and got out as quick as i did.

The best bit is 2 of the problems were so called recalls.

the first - someone removed the pc from a setup which used a kvm and wondered why it didnt work
second - the twit installed nero twice and wondered why his dvd drive we missing - he screwed his dvd upper and lower filters (xp)

then the bright spark jumped up mmm machines got xphome on

i mean duh
July 8, 2009 7:08:06 AM

Thanks again to everyone who provided me with information, tips, warnings, and advice in general with my issue. I wanted to dig this thread back up to let you know that I was successfully able to install the corsair tx750w power supply into my dell xps 420 without picking up a drill.

The only con I can think of is that I didn't purchase modular, and have 3-4 cables that I am not using at all cluttering up the case, but I wanted to save some cash.

After measuring my own psu and seeing the mechanical drawing of the 750
I though that it would fit, but might be slightly longer in the case (which is a nonissue).
The holes where the previous psu were screwed lined up properly, and everything worked out.

Thanks again for helping a noob out.
a c 88 ) Power supply
July 8, 2009 10:23:47 AM

No problem, and thanks for the feed back. Perhaps now the non believers will accept that Dell has gone to normal ATX PSUs, both physically and electrically. I would still double check, but things should be fine now.
August 12, 2009 12:33:09 AM

Ok everyone here is the deal i have a dell xps 420 also its about a year old i have a masters in computer tech and a masters in computer programing if u have a intel quad core or a intel quad core exstram in your xps tower the tower can take up to a 1200 watt power supply my xps 420 has a newly installed Antec Truepower Quattro 1000 watt power supply my tower works great dell has there heads up there ass you can go as high as a 1200 watt power supply make sure the power supply u buy has a 24 pin main power connector and a 4 pin back connector and it wont hert the tower or motherboard dell told me same thing about only being able to take up to 470 watt power supply but a computer tech knows more then a buntch of ppl at a corperation that is based out of india. so also if u want info on video cards a intel quad core 2.40 gh board can handle 2 2gb video cards a intel quad core extream can handle up to 4 2gb video cards with crossfire support. hope that helps you all :hello:  :D 
August 18, 2009 2:32:27 AM

Hmm, apparently no where in all that schooling were you required to take any English courses.

Sad for us...
September 5, 2009 3:22:57 PM

*** ing *** ing talking your ***
!