how good is a $20 PSU
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Thread: how good is a $20 PSU

  1. #1
    Join Date
    Jun 2000
    Location
    Toronto, Ontario, Canada
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    236

    how good is a $20 PSU

    Hi,

    Last week I bought a 20 dollar generic 420 watt PSU. The guy at the store said it was regularily 30 dollars.

    It is working fine, I'm just wondering how long this thing is likely to last.

    I've seen 300 watt power supplies for 70 - 120 with brand names.

    What are your guys opinions of these el cheapo units?

    PS: I'm talking Canadian dollars.

  2. #2
    Join Date
    Mar 2000
    Posts
    27,273
    I avoid them due to possible future headaches...
    "I know nothing."
    Cheers.

  3. #3
    Join Date
    Dec 1998
    Location
    Grand Haven, Michigan, USA
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    11,332
    If you are talking for the system in your signature, then you should be fine. 5 hard drives does draw a bit extra, but you should be fine. I would trust it on a newer system though, so if you upgrade, I'd get a new PSU.
    AMD Phenom II x4 945 3Ghz | ASUS M4A77TD | 2X WD 1TB SATA 2 hard drive | 2x2GB Corsair XMS3 | nVidia GeForce 8800 GTS | ATI TV Wonder Theater Pro 550 | Antec P-160 case | Antec 650w Earth Watts | LG Blu-ray Super Drive | LG DVD RW | Windows 7 Pro

  4. #4
    Join Date
    Jan 2002
    Posts
    6,334
    ive used those $20 (US) too ligtht for a paperweight power supplies. I actually got a lot of good use on them. Keep in mind that when it says 420w on a cheap power supply, its more likely around 300 from a brand name like enermax

  5. #5
    Join Date
    Jan 2002
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    6,334
    and i still dont use those high price bands..... i went to amd's website to check out the brands i was eyeballing, making sure they were at least amd aproved, i ending up buying three Allied brand power supplys, i think they were like $45 a piece, so midrange from what stated atop i guess. Excellent brand, 2 fans and not audible...

  6. #6
    Join Date
    Mar 1999
    Location
    Houston TX. USA
    Posts
    2,308
    A couple years ago I built some PC's using the PS that came in the cheap cases, wasn't long till BOOM! SIZZLE and POOF! they were gone in puff of white smoke. Everything except processor and video card were lost, they were very poorly built. But today even in a fairly cheap case the power supplies are much better. For $30 at Newegg, the Allied 400w dual fan unit (actually true DC output about 320w) is a nice one, have used many with no problems.

  7. #7
    Join Date
    Sep 2001
    Location
    Bloomingdale, IL, USA
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    5,206
    Believe it or not, I'm using a cheap $18 generic 350w PSU to power the system in my sig. This thing has run rock solid at 3.53GHz when I had my watercooling setup in it. I really think the only thing holding me back from going higher was the RAM and possibly the PSU, but I mean, for $18, I can't expect much. With that said, I think most of hte problem was/is the RAM I'm using. This power supply has had a lot thrown at it in the last 2 years or so including some Athlons at 1.8GHz or so with up to 2.35v (back when I was peltier cooling my AGKGA core) as well as my P4 @ 3.53GHz. The most beefy video card I've had in it was a GeForce4 Ti4200, so it hasn't had to go through any stress of high-end graphics cards, but still I think its held up rather well.

    I'd give ya the specs on it and what brand, but its 3AM and kinda dark to see so I guess I'll have to do that tomorrow afternoon whenever I wake up.
    Intel Pentium 4 2.53B C1 @2.85GHz (stock volts), watercooled @ 27*C load
    MSI 865PE Neo2-P (i865PE + ICH5), 1GB PC3200 DDR RAM
    ATi Radeon X700Pro 256MB AGP8x
    Seagate Barracuda 7200.9 160GB SATA, Maxtor DiamondMax 9 Plus 80GB
    NEC DVD-RW (ND-3520A), Lite-On 52/32/52x CD-RW (LTR-52327S)
    Microsoft Windows XP Professional SP2

    My Heatware | My Beerology | My eBay rating


  8. #8
    Join Date
    Dec 2002
    Location
    Redmond, WA
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    1,206
    Yeah, I've been using a generic 300W in my system for more than a year and have had absolutely no problems. I don't draw much power from it though, so if it's gonna bust it's not going to be because I'm sucking too much juice from it. Then again, it was an Allied brand PS that came with my $40 case at the time...
    Opteron 165 @ 280x9 = 2.52GHz
    ASUS A8N32-SLI Deluxe
    BFG 7600GT OC
    Corsair 2GB DDR400 Dual Channel
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  9. #9
    Join Date
    Jul 1999
    Location
    Kentucky, USA
    Posts
    893
    I guess I've gotten lucky that this 4 year old Enlight 300-watt PSU has held up so well with all this crap I'm running on it.
    Intel P4C 3.0Ghz
    Asus P4P800-E Deluxe
    2x256mb Corsair Value Select PC3200
    eVGA e-GeForce 6800
    WD 120gb SE
    IBM 60GXP 60gb
    Creative Labs Audigy (free)
    Toshiba SD-M1402 (12x dvd/40x cd)
    Lite-On 52x24x52 ($15 retail )
    Pioneer A06 DVD+/-RW
    ThermalTake Silent Purepower 420W PSU

  10. #10
    Join Date
    Jul 2003
    Location
    Scotland, UK
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    6,508
    im using a super flower 300Watt PSU that was £35 i think from ebuyer, dual fan, speed settings and its very heavy.
    Gigabyte Z87M-D3H l Pentium DC 3.2GHz l 16GB Ram l 64GB OCZ SSD l Radeon 7750 OC Edition l Windows 7 Ultimate X64
    Dell OptiPlex 745 l Intel C2D E6600 2.4GHz l 4GB Ram l 64GB OCZ SSD l Windows 7 Ultimate X64
    Lenovo ThinkPad T61 l C2D T7700 2.4GHz l 8GB Ram l 60GB Kingston SSD l Windows 7 Ultimate X64

  11. #11
    Join Date
    Jul 2000
    Location
    NB Canada
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    I have used many cheap powersupplys before. This Antec is my first good PSU.

    I have had a cheap 350w crap out on me before, luckly it didnt take out the rest of my main rig (celeron 566@850 at the time)

    I have been running some no name 300w psu in my server for probably 2 years now and it runs just fine.

  12. #12
    Join Date
    Sep 2001
    Location
    Bloomingdale, IL, USA
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    5,206
    Brand: L&C
    Model: LC-A350ATX
    Rated: 350w, 190w for combined 5v & 3.3v
    3.3v: 24A
    5v: 35A
    12v: 12A

    The 12v rail is weak compared to high-end PSUs, but the rest is pretty decent. I don't remember how much it weighs.

    I use an Enlight 7250 case that came with a 250w Enlight PSU at one time. It died in my dad's old P3-933 system for some reason, but until it died it was very stable. I think I somehow must have shorted it out or something...who knows.

    I think I will be upgrading to that Antec TruBlue480 listed on newegg for like $90 shipped. When? I'm not sure...I have some other things more important to upgrade such as a heatsink and memory
    Intel Pentium 4 2.53B C1 @2.85GHz (stock volts), watercooled @ 27*C load
    MSI 865PE Neo2-P (i865PE + ICH5), 1GB PC3200 DDR RAM
    ATi Radeon X700Pro 256MB AGP8x
    Seagate Barracuda 7200.9 160GB SATA, Maxtor DiamondMax 9 Plus 80GB
    NEC DVD-RW (ND-3520A), Lite-On 52/32/52x CD-RW (LTR-52327S)
    Microsoft Windows XP Professional SP2

    My Heatware | My Beerology | My eBay rating


  13. #13
    Join Date
    Jul 2003
    Location
    Scotland, UK
    Posts
    6,508
    these things are all money money money lol when does upgrading end lol!!
    Gigabyte Z87M-D3H l Pentium DC 3.2GHz l 16GB Ram l 64GB OCZ SSD l Radeon 7750 OC Edition l Windows 7 Ultimate X64
    Dell OptiPlex 745 l Intel C2D E6600 2.4GHz l 4GB Ram l 64GB OCZ SSD l Windows 7 Ultimate X64
    Lenovo ThinkPad T61 l C2D T7700 2.4GHz l 8GB Ram l 60GB Kingston SSD l Windows 7 Ultimate X64

  14. #14
    Join Date
    Jan 2002
    Posts
    6,334
    but hey thats 3 votes now for allied brand as a cheap solution. Quiet, stable, and CHEAP!

  15. #15
    Join Date
    Dec 1998
    Location
    phoenix, AZ, USA
    Posts
    28
    Allied and its sibling Deer brands should be avoided because of their poor quality, including tendency to burn out, damage computer hardware, and exaggerated ratings.

    Look for an FSP-made products - Fortron, Sparkle, Hi-Q, Aopen, which are excellent and inexpensive, and 300W FSP supplies can probably deliver more actual power than a 420W Allied.

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