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Silverstone > 
Item#: N82E16817256001

SILVERSTONE ST50EF 500W ATX 12V 2.2 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC PFC Power Supply

  • ATX 12V 2.2
  • 80 PLUS Certified
  • 90 - 264 V 47 - 63 Hz
  • +3.3V@30A,+5V@30A,+12V1@18A,+12V2@18A,
  • -12V2@0.5A,+5VSB@3.0A
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Learn more about the Silverstone ST50EF

Model

Brand
SILVERSTONE
Model
ST50EF

Spec

Type
ATX 12V 2.2
Maximum Power
500W
Fans
Silent running 120mm fan
PFC
Active PFC
Main Connector
20+4Pin
+12V Rails
Yes
PCI-Express Connector
2 x 6-Pin
SLI
SLI Certified
CrossFire
CrossFire Ready
Modular
No
Efficiency
Typical >80%
Energy-Efficient
80 PLUS Certified
Over Voltage Protection
Yes
Input Voltage
90 - 264 V
Input Frequency Range
47 - 63 Hz
Output
+3.3V@30A,+5V@30A,+12V1@18A,+12V2@18A,
-12V2@0.5A,+5VSB@3.0A
MTBF
100,000 hours at 25°C, full load

Features

Connectors
1 x 20+4Pin motherboard connector (550mm)
1 x 8Pin ATX12V connector (550mm)
1 x 4Pin ATX12V connector (550mm)
2 x 6Pin PCI-E (550mm)
2 x dual SATA power connectors (500mm + 250mm)
6 x 4Pin IDE power connector (500mm + 250mm + 150mm)
2 x 4Pin floppy power connector (500mm + 250mm + 150mm +150mm)

Manufacturer Warranty

Parts
1 year limited

Quick Info

Warranty

  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 0 day


Customer Reviews of the Silverstone ST50EF

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  • Anonymous
  • 12/25/2006 8:31:14 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week

5 out of 5 eggsGreat PS

Pros: Wow - a lot of power in this one. Lots of connectors -- can get messy -- so make sure you have good air-flow.

Cons: Not really a problem -- but the product specs should say that the PS connector is 24 pin. If you need a 20 pin connector -- you'll have to use their adapter thing.

1 out of 1 people found this review helpful. Did you? Yes No

  • David C.
  • 12/18/2006 10:54:26 PM
  • Tech Level: Somewhat Low
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSilverstone 500W

Pros: Great powersupply, efficient and quiet.

Cons: might need more power but 500W seems to be enough for me so far.
besides the big huge group of wires. id say thats the only prob.

Other Thoughts: i personally like this power supply a lot, nice an quiet.

1 out of 1 people found this review helpful. Did you? Yes No

  • William T.
  • 12/10/2006 12:11:08 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsDOA

Pros: The unit had very good reviews at a number of different online sites...unfortunately mine was DOA so I didn't get to find out. Newegg customer service rocked as usual...got online @ 10 pm and talked to a CS rep via webchat. They even refunded shipping both ways

Cons: I'd say a big con is that it was DOA. Wouldn't even turn on the LED on the mobo. How can something like this have a "Passed QC" sticker on it? I don't get it.

Other Thoughts: Newegg is great as usual...they are my go-to for electronics.

0 out of 2 people found this review helpful. Did you? Yes No

  • Nicholas H.
  • 11/26/2006 10:13:19 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent PSU

Pros: Great PSU. Does the job with ease.
It's powering a core 2 E6400, Sata2 160gb hd, 7900GTO, 2 gbs memory, my dvd drive, 5 case fans, and an artic cooling freezer 7 pro with ease.

Cons: None. Lots of wires maybe. Hard to hide them all.

Other Thoughts: Go for it.

1 out of 1 people found this review helpful. Did you? Yes No

  • Yancy M.
  • 10/12/2006 10:26:50 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsClean

Pros: Very clean power. Almost incredible the difference in power supply quality in the past few years.

The Active PFC is great and the efficiency rating is excellent for its price. This model is actually 80Plus certified. check out 80plus.org

The dual rails really come in handy with ample power for anything less an 8U sever rack or super high end quad sli gaming rig.

The 120mm fan stays very cool and very quiet.

The perfect PSU to Dollar amount~ watt for watt spec for spec out currently

Cons: The list is for a 20+4 plug however it comes with a 24 plug and 24to20 adapter.
The adapter is junk I don't recommend using it.
After insuring the PSU was in good working condition I modified the main connector to a 20+4 pin in 5 sec's with a straight razor.

& used the sorry adapter wires to make 2 inch jumpers from the 4 unused pins to other like voltage pins.

I recommend this at your own discretion :) But it worked very well, the the difference in my computer made me warm up to this PSU.

Other Thoughts: This was my second choice to the new (at purchase) Seasonic S12-550 Energy Plus.

It's Rated at a continuous 500 watts, not like other lesser supplies that list 500watts peak.
(IMOI) stay away from power supplies that only list peak watts, its a shady manufacturer marketing practice tell.

I like it, I wounder how it's going to hold up but only time will tell. But It's off to a great start.

For system analysis and current (ampere) draw comparisons I leave my Current Setup Specs...

My Current Rig:
Intel Deskboard D875PBZ w/ Intel's' i875P chipset & 1005pin MCH(ie. north bridge) Entry level sever board ~ 1024MB-(256X4) Infineon 2ns DDR-400 synchronized in Quad channel Dynamic Mode ~ Intel Pentium 4 540 3.2GHz 1MB L2 cache Hyper-Threading Processor~ Nvidia's Geforce 7800 GS video card ~ Creative Labs X-fi X-music ~ Dual Hitachi SATAII 3Gb/s in RAID 0 ~ A CD Burner & DVD-Rom optical drive w/ flopy and 2 case fans ~ My Current OS: Mandrivan 2007 (Linux of Course)

1 out of 1 people found this review helpful. Did you? Yes No

  • Greg H.
  • 9/16/2006 5:37:59 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month

5 out of 5 eggsquiet, reliable

Pros: I've used this for a few months now and it works great with the Asus P5WD2 motherboard in my Linux workstation. I would buy this again.

Cons: none

Did you find this review helpful? Yes No

  • Anonymous
  • 8/15/2006 6:13:01 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsFailure

Pros: Supports SLI, 500W, one fan and quiet

Cons: I installed this the first day i got it and it worked...well...like a DOA piece. The thing buzzed and at first didn't feed the computer enough power to get past the POST boot process. It finally work and then DIED!!!!

0 out of 2 people found this review helpful. Did you? Yes No

  • Mark J.
  • 8/7/2006 5:41:09 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsGood while it lasted

Pros: Well its silent I hear absolutley no noise from this psu whatsoever, its also very cool and it kept everything well powered I don't know why it died but guess it did and can't do anything about that can I?

Cons: it died

Other Thoughts: I'm definantly going to rma this one in exchange for the same model I do like this psu and it hasn't done bad at all I'll give it another shot

Did you find this review helpful? Yes No

  • nicholas d.
  • 7/14/2006 1:59:27 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsmeh, good but picky

Pros: its a decent psu if u dont have a x1800xt that recommends 450w, so im waitin on 750w from same company, i can salvage the 24 to 20 off this one for the 750. powers well, looks good and is quiet.

Cons: half-done loom job,(electrical tape worx, lol), i think 2 floppy connectors is useless, imo same with quad sli even tho it doesnt have 4 16x, it gets picky if u go over the wattage even tho it should power it all, but i think that is cause of my video card

Other Thoughts: i hope the 750w powers my system as good as the companys pc case line is.

0 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 7/13/2006 5:51:51 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

5 out of 5 eggsWow!

Pros: Plenty of connections, Sleeved or not, I don't have a problemwith the wires, I just use a tie strap to bunch them together androut them out of my way. Very quiet PS!

Cons: None!

Other Thoughts: I never knew how much noise my old power supply was making until I installed the SST-ST50EF! I was going to buy new fans and CPU Heatsink and fan unit, but not I don't have to, they are already quiet! Silverstone Rocks! I will definately buy another PS from them, which I will do in about two weeks for my other tower. As always, NEWEGG never disappoints!

Did you find this review helpful? Yes No

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Power Supplies > 
Power Supplies > 
Silverstone > 
Item#: N82E16817256001
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