Current consumption per device

[Yoda]

I made an online script for calculating the minimum power required (i intend to buy soon a new PSU): http://www.belprofile.ro/psu.php

It is based on FiringSquad and sandpile.org articles but i'm not sure if data on FireSquad is correct (only 10W for a VGA card ).

Does anybody know where can i find a better list with current consumption per device?

And, of course, what you guys think about this script?

[Siliconjunkie]

I think it is useful. The power usage should be available from the MFG spec sheet for things like video cards, NIC, sound and such. But video cards are the only BIG variable there that I can think of.

Also, you may want to add lines for 80mm and 120mm fans and possible lights of some sort.

[EvilCrow]

Hmm, said I only needed a 243W, and I use a 450W PSU.

[chapmc]

Hmm., said I only need 49 watts.. Duron 900

[Yoda]

Siliconjunkie, only if i can find some data for power consumption for different fans.

Originally posted by EvilCrow
Hmm, said I only needed a 243W, and I use a 450W PSU.

We know Power = Current * Voltage, and so by the math our minimum power spec is 279W. So all 300W power supplies should be good enough right? And if we wanted to account for “overzealous advertising” we’d be “for sure” safe with a 350W power supply right? Not to mention, those numbers assume that every single drive in your system is being used at the same time, and we’ve already said that the individual components err on the high-end side…

Well not exactly.

At FiringSquad, we don’t think you should expect to sacrifice stability when your system is under full load and so for the rest of this article, we’ll continue to assume 100% power consumption on all devices. That said, because it is rare to have every component active, a reasonable approximation is to assume 80% of your components are active at any given instant and that your CPU is always drawing full power.

http://firingsquad.gamers.com/guides...pply/page3.asp

Originally posted by chapmc
Hmm., said I only need 49 watts.. Duron 900

Maximum Power: 900 MHz 0.18 µm: 60 W
http://www.sandpile.org/impl/k7.htm

At FiringSquad we like for power consumption to be at 80% of advertised maximum and so we need to alter our numbers to account for that

My formula: Recommended PSU= max power needed *10/8=75W ONLY for your CPU.

So you probably didn't checked any required devices (mobo, fans, memory, video card, hdd, etc).

[Sweeper]

told me I only needed a 100W PSU.... I think it's a bit off......

[Yoda]

What system?

[samwichse]

Um... it said I needed 64W!?

AMD 1700+
2 hdd
6 fans
2 CDRW
768mb ram
2 usb
and 1 of everything else but PCI modem and firewire (which are 0)

Sam

[Yoda]

Originally posted by samwichse
Um... it said I needed 64W!?

Actually:

Recommended PSU: 360W (205W on +3.3v & +5v rails) for:
-1 x Motherboard without onboard devices
-6 x Fans (including PSU fans)
-6 x Memory (128MB DDR)
-1 x VGA
-1 x PCI Sound
-1 x PCI Network Card
-2 x HDD
-2 x CD-RW
-1 x DVD
-1 x Floppy
-2 x USB devices
-1 x Keyboard
-1 x Mouse
-CPU: AMD K7 1466B MHz TH CPUID=680

I think that butons that needs to be checked are verrrrrrrry confusing. Removing soon.

Later edit: done. Try now.

[Sweeper]

Recommended PSU: 343W (220W on +3.3v & +5v rails) for:
-1 x Motherboard without onboard devices
-7 x Fans (including PSU fans)
-4 x Memory (128MB DDR)
-1 x VGA
-1 x PCI Sound
-1 x PCI Network Card
-1 x HDD
-1 x CD-RW
-1 x DVD
-1 x Floppy
-4 x USB devices
-1 x Keyboard
-1 x Mouse
-1 x FireWire
-CPU: Intel P4 (2.53B GHz 0.13 µm µPGA478 @ 1.525 V)

Sounds about right now....