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Is my power supply powerful enough?

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  • Power Supplies
  • Components
Last response: in Components
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May 3, 2010 6:52:29 PM

Hi guys

I am the owner of an ATI Radeon 4770 and the future owner of another 4770. Anyway I have an uncertified power supply, although that should not be much of a problem.

My power supply is an USP-5550 with a maximum power of 550W
See product page from manifacturer below:
http://www.hkc-europe.com/showPro.asp?ArticleID=391

I don`t have much devices connected though. None of those watercooling or large LED fans
I have Athlon IIx3 435 CPU, 1x SATA HDD, 1x IDE DVD-R drive plus 2 RAM and I am not intersted in overcloacking anything

According to ASUS power supply calculator
http://support.asus.com/PowerSupplyCalculator/PSCalcula...
my power supply should be withing requiments of my hardware even at full load

The PSU is almost new by the way and with my current configuration it has not had any problem yet
Plus that the 4770 is not a power hungry card

But I am kinda worried because I got this PSU for cheaper than any CrossfireX qualified power supply (I bought it 2 months ago, when I was in Germany for almost 32 Euros) and HKC is not a well known manifactuer like THERMALTAKE, COOLERMASTER, AKASA, LC etc and in the back of the box (XFX edition) it said that the 4770 needs a 600W or higher PSU to run in crossifre

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May 3, 2010 7:16:02 PM

Your power is fine I looked up your system and added a 4770 and the total wattage is 495Watts.
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May 3, 2010 7:18:20 PM

i dont think a 4770 needs 600w or more....... a GOOD 550w-600w will do. keep to what i said but also think about upgrads in time becase games are moving fast.
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May 3, 2010 7:22:07 PM

SHANEMARINES said:
Your power is fine I looked up your system and added a 4770 and the total wattage is 495Watts.



495Watts, on a 500w cheap psu! i dont think so.
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May 3, 2010 7:32:42 PM

robin banks uk said:
495Watts, on a 500w cheap psu! i dont think so.


It`s not an 500W PSU, it`s an 550W one
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a b ) Power supply
May 3, 2010 7:53:24 PM

daywatch said:
Hi guys

I am the owner of an ATI Radeon 4770 and the future owner of another 4770. Anyway I have an uncertified power supply, although that should not be much of a problem.

My power supply is an USP-5550 with a maximum power of 550W
See product page from manifacturer below:
http://www.hkc-europe.com/showPro.asp?ArticleID=391

I don`t have much devices connected though. None of those watercooling or large LED fans
I have Athlon IIx3 435 CPU, 1x SATA HDD, 1x IDE DVD-R drive plus 2 RAM and I am not intersted in overcloacking anything

According to ASUS power supply calculator
http://support.asus.com/PowerSupplyCalculator/PSCalcula...
my power supply should be withing requiments of my hardware even at full load

The PSU is almost new by the way and with my current configuration it has not had any problem yet
Plus that the 4770 is not a power hungry card

But I am kinda worried because I got this PSU for cheaper than any CrossfireX qualified power supply (I bought it 2 months ago, when I was in Germany for almost 32 Euros) and HKC is not a well known manifactuer like THERMALTAKE, COOLERMASTER, AKASA, LC etc and in the back of the box (XFX edition) it said that the 4770 needs a 600W or higher PSU to run in crossifre

It's cool
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May 3, 2010 7:54:21 PM

daywatch said:
It`s not an 500W PSU, it`s an 550W one

but the point is CHEAP psu. Dont forget the psu runs everything in your pc and is the ONLY component that could KILL ALL your other conponents. If you read a few of the threads about PSU's on Toms you will realize everyone says get a Good psu. 495watts on a cheap 550watt psu is pushing it to close 495Watts on a decent 550watt psu is no problem tho. Its ALL about quality with your psu's and almost everyone here on tom's will say that.
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May 3, 2010 9:01:00 PM

cheap psu at 550w is about the same as a good 500w psu
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May 4, 2010 1:22:50 PM

Well I did some research about this. A single Radeon 4770 consumes 80W at max. 2 should consume 160 and my CPU consumes 95W. So they consume 255W together.
they need 21,25 Apms on the +12 rail total, while my PSU has 24

I do not know how much power do the HDD, DVD-R and RAM consume but they should not be much fuel hungry. Depsite the +12 rail there also are the +3.3V and + 5V rails so it should not much of a problem, should it?
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Best solution

May 4, 2010 3:02:12 PM

If your psu states 24A on the 12v rail ? You don't want to run two video cards.
I checked out the link. Thats only 288 watts available. You cpu,video cards only run off the 12v rail.
Plan B
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May 4, 2010 5:58:01 PM

Yeah I know. Looks like I have to get a job this summer. Anyway do you have any suggestions on what PSU to buy?
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May 4, 2010 6:18:39 PM

daywatch said:
Yeah I know. Looks like I have to get a job this summer. Anyway do you have any suggestions on what PSU to buy?

Seasonic, Antec and XFX are examples of good psu makers. so any from one of those makers that suits your power requirements would be fine for you.

Im in the market myself for a new psu and im looking @ either the Antec Quattro or the XFX black edtion. the Antec Quattro @ min of 750watts may be a little over kill for your system. but the 650 Watt XFX black edition should be more than good enough even giveing you some degree of future proofing.

"Edit" oppsy sorry the Quattro's start @ 850watt
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May 4, 2010 7:44:28 PM

Well then I`ll go for the XFX XXX edition. It should be more than enough for the 4770`s and even for any future upgrade. The only problem now is finding a store which ships internationally

And I`m also getting an ASUS CROSSHAIR III FORMULA motherboard too which has 2 PCI-e slots running on x16 each plus 1 DDR-3 RAM stick
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May 4, 2010 11:38:33 PM

Trust me your fine I run 2 GTX 260 in SLI with a AMD II x 2 @ 3.0Ghz with 2 160GB in Raid 0 on a cheap 525Watt from newegg. I never have any problems with my rig.
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May 5, 2010 11:07:22 AM

Option 1 (the most costly) Thermaltake W0105 ToughPower 700w
This is the best PSU I can find. It has 4 12V rails, each with 18A and 2 PCI-e Connectors. Plus is Crossfire X certified. This easily should handle everything I have and all future upgrades.

Option 2 (middle priced) TAGAN TG500-U33II SUPERROCK 500W
this one has only 500W and 2 +12V rails (don`t know how much Amps though) but it should handle those 4770`s although I am not sure if it will handle any future upgrades

Option 3 (least costly) LC-POWER 600W PSU LC6600
This one has 2 +12V rails running at 14 and 15 Amps. But it has only 1 PCI-e 6+2 pin connector but I have a 4-pin to 6 pin converter. Should be able to run 4770`s in crossfire too, I think

I`m most likely to get the first one. Option 3 seems rather weak to me and option 2 has only 500W output, depsite being very costly for an 500W
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May 5, 2010 1:25:25 PM

Best answer selected by Daywatch.
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May 6, 2010 10:08:31 AM

Well thread solved glad we could help you Daywatch!
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!