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What symptoms will indicate the need for a more powerful PSU?

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  • Hard Drives
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Last response: in Components
April 29, 2010 6:12:00 AM

Hi, Guys.

I recently upgraded my PC from a Core2 Duo processor (E6550) to a Core2 Quad (Q9400) and increased the RAM from 4 to 8 Gigs. Also added a second HDD. I also have an eSata HDD attached.

Now the system sometimes hangs during boot-up or restart (especially if I have a USB device attached). Do you think this could be a PSU problem? My PSU is only 300W.

Thanks in advance for any help.


More about : symptoms powerful psu

April 29, 2010 6:15:52 AM

Soory, I shouls have added that my MB is an Intel PD35PD and my GPU is a nVidia 8500GT
April 29, 2010 8:34:05 AM

The only symptom I'm aware of is total system failure under load, i.e. completely crashing when you try to do anything significant. When you try to draw too much power, things don't just slow down, they MELT down.

Just checking the specs of your equipment though, it looks like the CPU and GPU are using more than half of your PSU wattage. If you intend on upgrading your GPU any time soon, you will almost certainly need a new PSU as well, and 'top of the line' is affordable for those - ~$100 for a 1000W PSU which will probably be more than enough for you for a long time.
Related resources
a b ) Power supply
April 29, 2010 8:38:00 AM

What make of PSU?

I'd have that system down as potentially borderline.
April 29, 2010 8:59:19 AM

CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified for $70 after MIR and an upgrade to EVGA 512-P3-1153-TR GeForce GTS 250 512MB 256-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card for about $132 with shipping. These would be all the upgrades you would need for your system to ensure longevity and stability.
a b ) Power supply
April 29, 2010 10:14:52 AM

^making the assumption OP is a gamer of course...
a c 144 ) Power supply
April 29, 2010 11:48:45 AM

Many motherboards have problems booting with USB devices other than keyboards and mice.