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Tom's Hardware > Forum > CPU & Components > Power Supplies, Cases & Mods > 450 watt PSU or 550 watt PSU?

450 watt PSU or 550 watt PSU?

Forum CPU & Components : Power Supplies, Cases & Mods 450 watt PSU or 550 watt PSU?

Hello,
I boaght a new PC (assembled) 2 months ago.configuration is:
Phenom IIx4 955 Black Edition.
Asus M4A78LT-M LE
2x2GB Pietek ddr3 1333mhz RAM
XFX ATI RADEON HD 4670 1GB GDDR3
450 Watt Power Supply Unit
after i started using my pc,it did not work well.like there were system crashes,hardware problems,Games not installing properly,etc.i got it checked by the manufacturer and he said that a new power supply unit is needed for the system to work properly (a 550 watt P.S.U).i wanted to confirm that if the problem is true and also please tell me the rates of PSU's Available in india under $30 max.

Message quoted 2 times

Reply to shikhar

450W is more than enough with overclocking. But a lot depends on the brand of 450W you used. Trust only Corsair, Seasonic, Antec.

Message quoted 1 times
Message edited by hell_storm2004 on 06-07-2011 at 11:14:31 AM

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Reply to hell_storm2004

Mine is the one which came with the cabinet.is it ok?

Message quoted 1 times

Reply to shikhar

no, unless its an Antec case, the PSU's that come with cases are generally cheap fireworks. For $30 you wont get anything better than what you have. The best low end unit for your system would be the Antec Earthwatts 380w. I know, its only 380w, but Antec load test their PSU's and rate them as Continuous Wattage. Cheap 450w psu's would be lucky to produce 200w continuous. The world of power supplies is confusing, unfortunately many cheap manufacturers blatently lie about the psu's specs and somehow get away with it.

------------------------------ INTEL CORE 2 Q6600 @ 3.49GHz, CM Hyper TX3, ASUS P5N-D, 8GB DDR800 RAM, Powercolour HD6850, 650w Antec Trupower New PSU
Reply to iam2thecrowe

shikhar wrote :

Mine is the one which came with the cabinet.is it ok?

That is the major problem. Get something better.

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Reply to hell_storm2004

You've been given good advice. I hope you follow it. Brand name PSUs ARE worth the extra $$$.

Reply to rodney_ws

I would always go higher, the waste watts is negligible at that level. Though, you might not needed, you may want it later. Just make sure, you get a decent brand, for a 550w PSU and get at least 40amp single rail PSU.

------------------------------ ASRock Z77 Pro3
i5 2500K@4Ghz
HyperX 8gb 1333
Crucial M4 64gB
Reply to cronos177

^absolutely no need to get a 550w 40a single rail psu. for his setup a single 18a rail from a quality psu would be enough.

------------------------------ INTEL CORE 2 Q6600 @ 3.49GHz, CM Hyper TX3, ASUS P5N-D, 8GB DDR800 RAM, Powercolour HD6850, 650w Antec Trupower New PSU
Reply to iam2thecrowe

Also I would like to stress even more the need for a good quality PSU.
Actually that would be only component in a PC that I wouldn't allow my self to go cheap...

Reply to Stupido

^ im pretty sure anyone that has bought a cheap psu for a computer has regreted it. I know i did back in the day and when the psu blew up it took my motherboard with it. It claimed 550w but couldn't even run an athlon xp cpu and 9800gt vid card

------------------------------ INTEL CORE 2 Q6600 @ 3.49GHz, CM Hyper TX3, ASUS P5N-D, 8GB DDR800 RAM, Powercolour HD6850, 650w Antec Trupower New PSU
Reply to iam2thecrowe

shikhar wrote :

make sure you go with the branded ones, cheap/generic psu's dont meet the power labeled with it, 30 usd??? theres no way, dont make your psu as your last choice to spend,
if it does not give enough power to your system it can cause you more, it will be dead and it will also damage your motherboard and videocard, the more it will cause you.
alot of good psu out there, corsair, enermax, thermaltake, antec, FSP, but if you are on a budget, maybe you could find a decent one in thermaltake or a coolermaster.
atleast you get a decent psu, i will go for a lower wattage but branded 450w than a cheap 600w psu.

ok thanks everybody.......it has been really helpful.....so is 450watt branded psu good for my config?...

Reply to shikhar

Depends on which brand you are getting! Get Corsair, Antec, Seasonic and you cant go wrong.

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Reply to hell_storm2004

yes branded 450w will do in any corsair, xfx, seasonic, antec, enermax, FSP, silverstone, this are the top psu makers. if your on a budget maybe you can get a 500w coolermaster or thermaltake, this are decent brands also.

Message edited by oby20 on 06-14-2011 at 02:40:46 AM

ok....i have two options..
1.Gigabyte Superb 460W GE-R460-V1 ($40 approx.)
2.Corsair Builder Series 430W (CMPSU-430CX) ($48.5 approx)

Reply to shikhar

No to both. Get Corsair VX450W. That is a better one.

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Reply to hell_storm2004

sorry but no cause i am really tight on budget (max $50)

Reply to shikhar

CX430 then. But frankly you should not ease out on a PSU. The most critical part of the PC! It is a decent PSU, but not quite the Corsair quality you expect.

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Reply to hell_storm2004

Can you list your options available ?, for the price range.

------------------------------ ASRock Z77 Pro3
i5 2500K@4Ghz
HyperX 8gb 1333
Crucial M4 64gB
Reply to cronos177

one thing is concerning me.i wanted to confirm if this is the only problem and i dont waste my bucks by buying a quality psu.will it surely solve the problem of overheating and crashes and instability? thanks

Reply to shikhar

i bought a cooler master extreme Power edition 460 watt but it did not totally solve my problem....but anyway thanks to all of you.

Reply to shikhar

hell_storm2004 wrote :

450W is more than enough with overclocking. But a lot depends on the brand of 450W you used. Trust only Corsair, Seasonic, Antec.

Dont forget XFX Seasonic is the OEM for them.

Message edited by jchambers2586 on 06-25-2011 at 08:39:00 PM

Reply to jchambers2586

shikhar wrote :

I would go for Corsair for $35.00 after reabte you can't go wrong.

http://www.newegg.com/Product/Prod [...] 6817139026
Please don't skimp on a PSU I did one day and I still regret it to this day. The PSU is the most overlooked piece of hardware in a system. When cheap PSU died it took every thing connected with it. Mother board video cards hard drives the whole shot went with it. So please don't skimp on the PSU. It's easy to blow your all your PC hard ware on a $25 PSU.

Reply to jchambers2586

I think the OP is from India. So no XFX available here and especially no newegg and its goodies!!!

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Reply to hell_storm2004

Did not know where he was from

Reply to jchambers2586

yeah right.....but www.theitdepot.com provides plenty of goddies....like corsair, seasonic..etc....and its an indian site.

Reply to shikhar

Well i see that XFX PSU's are available at ITDepot. But anyways we already have told you which one's to go for and its up to you to decide now which one you prefer within your budget.

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Reply to hell_storm2004

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