Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > PSU Calculator not accurate

PSU Calculator not accurate

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - PSU Calculator not accurate

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hash   07-04-2009 at 03:38:46 PM

Hi,

  

I tried different PSU Calculators and they differ in huge amounts for the same setup. Like at least 50- 90 watts difference in the 3 PSU calculators. I just cannot afford to buy a costly PSU . I asked my PC dealer and he told for the money i got he could get me a Mercury 450 Watt PSU
Will that be enough for

 

this setup :

 

AMD Athlonx2 7750
XFX XXX ATI 4850
2GB DDr2 COrshair
1 DVDRW drive
2 Seagate barracude 7200rpm

 

I just need to know if 450 watt PSU will be enough? Anyone help ? please .


Message edited by hash on 07-04-2009 at 04:15:01 PM
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theAnimal   07-04-2009 at 04:17:12 PM
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A good quality 400W PSU is plenty for your system. I would recommend Corsair CX400, Antec Earthwatts 380 or 430, or Seasonic S12 II 380 or 430.

The PSU is the most important component in your system. If you buy a crappy PSU there is a good chance it will fail, and when it does it can take other components with it.

------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
 Reply to theAnimal
hash   07-04-2009 at 04:33:44 PM
- 0 +

Thanks a lot . But I can't afford a Corsair or Antec etc ... No money . My PC dealer suggested me Mercury 450 watt will that be okay ?

Message quoted 1 times
Reply to hash
theAnimal   07-04-2009 at 04:47:51 PM
- 0 +

hash wrote :

Thanks a lot . But I can't afford a Corsair or Antec etc ... No money . My PC dealer suggested me Mercury 450 watt will that be okay ?



Never heard of it, so chances are it's crap, which means it may ending up costing you a lot more in the long run if you need to replace other parts due to failure.

Some decent lower cost PSUs are Antec Basiq or OCZ, or Seasonic SS.

------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
 Reply to theAnimal
Bronze CPUs badge jsc   07-05-2009 at 02:52:45 PM
- 0 +

Although I like Antecs (I own two), I have heard enough bad the about the Basiq line, that I'd avoid it.

hash, I'd avoid the Mercury PSU. I tried to google the PSU. Could not find specs.

One thing you could, if you do not need it right away, is to watch for sales.

Reply to jsc
bmadd   07-05-2009 at 02:53:10 PM
- 0 +

Do try and get a decent psu. I used to use a 480W cheapo that come with my case. That is until i started getting the LED on the fans dimming when i loaded up games then crashing 5min in. Borrow $30 off a friend for a couple of weeks and splash out on a decent psu as it is the blood of your system. You will not regret it I PROMISE

------------------------------ AMD 955BE @ 3200, 1.18V><Gigabyte GA-MA790XT-UD4P F5 BIOS><8Gb OCZ 1333 PLAT @ 1333 6-6-6-18 1T 1.95V><ATI 4870 1Gig (840core 1000mem)><Lian Li PC-A71><Corsair HX-750><BenQ V2400W><Microsoft Wireless Entertainment Desktop 8000>
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