Can a 450w PSU handle this spec?
- Thread starter malachi
- Start date
Soldato
What brand PSU is it? If it's a good brand like Corsair/Enermax/Antec then it should be fine 
Associate
You'll be perfectly fine, even if you do OC.
The power requirements are massively exajerated.
But like the above said, as long as its a decent brand.
The power requirements are massively exajerated.
But like the above said, as long as its a decent brand.
Soldato
450w will be fine, as long as it's not a hiper! 
450w will be fine, as long as it's not a hiper!
Lol,its a Sumvision 450W psu.
Soldato
Soldato
That would be a chuck it in the bin and buy a proper one job then
Indeed, they sell for £13!
Get rid of it and get a Corsair or Enermax.Looked it up. Wow, that is seriously dodgy. It has a maximum output of 14 amps on the 12V line. Compare that to a decent 450W PSU like the Corsair HX450, which has 33 amps. That's 168W at 12V, compared to 396.
Basically, that isn't anything like a 450W PSU. It's a nasty piece of cheap junk that you should get away from your PC before it dies and takes the rest of your system with it. There's no way that will run a quad and a 4890.
Soldato
Hi-power is okay and OCZ are good, but anything with a name like 'Powwa' isn't going to be any good 
The OCZ is a pretty good PSU - wouldn't put it on the same level as Corsair/Enermax/PCP&C, but you won't go far wrong with it.
Those others don't look brilliant, but at least they claim to come close to their rated watts. Plus they cost more than £13, which is always a good sign. Not at the same level of dodginess as the Sumvision trash.
(edit) To expand a bit because I'm bored: the way Sumvision come to the 450W is that they add up the output of all the PSU's rails. It has 92W at 3.3v, 170W at 5v and 168W at 12v, plus 22W at -5 and -12.
The problem is that that's very inflexible and doesn't reflect the power your PC uses. A modern PC will draw almost exclusively from the 12v and hardly at all from the lower voltages. (See the graphics card power connectors, and the 4/8 pin plug that goes near the CPU? Those are just lots of 12v lines.)
That's why the Corsair PSU can supply almost its entire output at 12v. Try running a quad and a 4890 and you'll be pulling 200W from the 12v line, which will cause the Sumvision to die very quickly, probably leaving you with lots of smoke and a big bill.
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Soldato
You'll find cheaper PSU's now measure their power as a peak power rating...
Seems PC PSU's may be going the same way as Pc speakers..."1000W! (PMPO... 3W rms)"
Ok just to confirm something would a OCZ Stealth XStream 600W PSU - SLI Ready ATX2.2 12cm Fan be fine to use with
Radeon 4870 512
Core 2 Quad Q8200 with ASUS P5QL-E iP43 motherboard
1 x SATA DVD Drive
1 x SATA 1TB Samsung hard disk
The power supply has 4x 12V rails I belive
I'm also planning to overclock the processor from 2.33 to either 2.66 or 3.00GHz with an Arctic Cooling AC-FRZ-7P Freezer 7 Pro Socket 775 Processor Cooler and some OCZ 4GB Kit (2x2GB) DDR2 1066MHz/PC2-8500 Reaper Memory HPC Edition Dual Channel x2 which I will overclock a little as well
Radeon 4870 512
Core 2 Quad Q8200 with ASUS P5QL-E iP43 motherboard
1 x SATA DVD Drive
1 x SATA 1TB Samsung hard disk
The power supply has 4x 12V rails I belive
I'm also planning to overclock the processor from 2.33 to either 2.66 or 3.00GHz with an Arctic Cooling AC-FRZ-7P Freezer 7 Pro Socket 775 Processor Cooler and some OCZ 4GB Kit (2x2GB) DDR2 1066MHz/PC2-8500 Reaper Memory HPC Edition Dual Channel x2 which I will overclock a little as well
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Soldato
Yep, easily