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The little engine that could: Dell 305watt

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a b ) Power supply
July 17, 2009 3:19:36 AM

Let's share stories of the might and underrated Dell 305watt, with 36rated amps on two 12v rails. (mine had a max output of 264watts, making it 22amps max output)

What was the most power hungry CPU/GPU/etc that you ran on a Dell 305 watt?

More about : engine dell 305watt

a b ) Power supply
July 17, 2009 4:42:59 AM

Btw, I wonder what would be the proper wattage label of this PSU. 400watt? 450watt?
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a b ) Power supply
July 17, 2009 3:29:30 PM

lawl...I bet his rig has blown up by now.

What about you Dell user?
a c 243 ) Power supply
July 17, 2009 4:36:39 PM

I tend to not push them that hard.
I have used several of the 305's to replace blown Allied's and Eagletech unit's though.
As far as the photo, I had conversed with the guy for over 9 months before the format change at the DCF when he disappeared.
He was running ( and benchmarking ) the 8800, a PD 820, single HD and single DVD drive on the 305 for that entire time.
a c 164 ) Power supply
July 17, 2009 7:47:37 PM

i ran a 9800GT, 2 DVD drives, HDD, wi-fi card, sound card, and a memory card reader on that little thing. I put in a PC Power & Cooling PSU after upgrading the CPU to a 125w CPU.
a b ) Power supply
July 18, 2009 4:33:02 AM

^ye, it has a combined wattage of 264watts on 12v rails, so I'm thinking it has 22amps in reality.

What does 22amps on the 12v rail translate into in terms of total wattage?


EDIT: wut the? Did you delete your post? The quote didn't work and your post disappeared.
a b ) Power supply
July 18, 2009 4:34:39 AM

ct1615 said:
i ran a 9800GT, 2 DVD drives, HDD, wi-fi card, sound card, and a memory card reader on that little thing. I put in a PC Power & Cooling PSU after upgrading the CPU to a 125w CPU.


Nice :D 

What was your CPU before upgrading your PSU? What did you upgrade it to?
July 18, 2009 4:39:48 AM

My bad. I realised you've already known about it as stated in your first post. (I was scan reading...)

Anyway, I'd love to get my hand on them for cheap 2nd hand if it has output close to 80Plus spec. efficient. I think they're about 420-450W capable.
More than enough for stock PII 955/Q9550 and GTX285.

A lot of my low-powered builds could use one too. Every $ counts! :)  Although Antec EA380 costs $45 on NewEgg, half price of that would be good.
a b ) Power supply
July 18, 2009 4:49:47 AM

wuzy said:

Anyway, I'd love to get my hand on them for cheap 2nd hand if it has output close to 80Plus spec. efficient. I think they're about 420-450W capable.
More than enough for stock PII 955/Q9550 and GTX285.


Dell 305watt + GTX285 ? wah? O_o
a c 164 ) Power supply
July 18, 2009 4:53:26 AM

Bluescreendeath said:
Nice :D 

What was your CPU before upgrading your PSU? What did you upgrade it to?



Athlon windsor x2 4200 (89w) to x2 6000
a c 164 ) Power supply
July 18, 2009 4:58:19 AM

Bluescreendeath said:


What does 22amps on the 12v rail translate into in terms of total wattage?




Watts = Amps x Volts

I don't think it has that many amps, I think its closer to 18-19amps but I have not checked in a while.
July 18, 2009 4:58:44 AM

Remember that no stock clocked single-GPU, quadcore system is capable of drawing over ~390W. Some review sites show power drawn from wall which has to be multiplied by efficiency to get actual power usage.

Just a typical example of i7 965 + GTX285. And modern PSUs that have passed 80Plus tests are more than capable of sustaining full load for prolonged time.,
a b ) Power supply
July 18, 2009 5:08:42 AM

ct1615 said:
Watts = Amps x Volts

I don't think it has that many amps, I think its closer to 18-19amps but I have not checked in a while.


Yeh, 18amps on two 12v rails. 22amps in terms of output per watt. Not too shabby I guess.
July 18, 2009 5:33:15 AM

Bluescreendeath said:
Yeh, 18amps on two 12v rails. 22amps in terms of output per watt. Not too shabby I guess.

264W dedicated to 12V+ rail to produce 22A out of its total (underrated) 305W tells me it's a PSU built on modern design, where most % of its output goes to 12V+. Most likely built after late-2006. And if has efficiency close to being 80Plus qualified (but not quite, like my TT Purepower 680W rev.2) then it's probably after mid-2007.
a b ) Power supply
July 18, 2009 5:50:40 AM

Yep. I was actually thinking of getting a Thermaltake 430watt to replace it...but then I read that the 430 only has 18amps on a 12v rail so it would've been like a downgrade. :D 
a c 243 ) Power supply
July 18, 2009 9:21:28 AM

wuzy said:


Anyway, I'd love to get my hand on them for cheap 2nd hand if it has output close to 80Plus spec. efficient.


My Killawatt meter showed that the Dell psu's ( 305w/375w ) pull 10% more power from the wall than an Antec EA380/430, to run the same components, the Dell isn't going to come close to the 80+ spec.
July 18, 2009 9:41:59 PM

I have a Dell Dimension E520 with the Dell 305W powersupply. It has been on almost 24/7 since May 2007.

Core2Duo E6420
4GB (2x2GB) Crucial Ballistix DDR2
16x DVD+-RW drive
320GB Western Digital (primary harddrive)
500GB Seagate (secondly harddrive)
Sapphire ATI Radeon HD 3850 videocard
Creative Sound Blaster Audigy 2 Value soundcard
Dell 19 inch LCD monitor

500GB Seagate FreeAgent (USB 2.0)
500GB Seagate FreeAgent (USB 2.0)
1TB Western Digital My Book Essential (USB 2.0)
Logitech Fusion Webcam (USB 2.0)
and I used up all the USB ports for all my other USB devices (printer, mouse, keyboard, etc.)

and so far it has not blown up on me yet... haha
a b ) Power supply
July 19, 2009 4:13:43 AM

^ lol, nice. Keep dat thing goin!

My E520 actually got fried during a power surge. I replaced the case, mobo, and RAM.
I was able to reuse the cpu (E6300 in my sig), hard drive, DVD drive, and the trusty ole Dell 305 watt. :D 
July 20, 2009 7:44:16 AM

Well, I don't have the 305W, but I have the 280W and its a great PSU too lol. Runs my system good altho I do think its abit on the edge.
July 20, 2009 1:16:15 PM

Anyone know who the OEM is on this?
a c 243 ) Power supply
July 20, 2009 1:26:36 PM

yoyojam55 said:
Anyone know who the OEM is on this?

The 305w ?
It's a Newton/Delta.
a b ) Power supply
July 20, 2009 8:55:51 PM

I wonder if it is a standard ATX PSU. It fits in my ATX midtower case, but it was a very tight fit and I had to bend some metal.
!