How much does a typical quad core Xeon eat, say an E5410 or a E7320? a 2GB RAM stick? A 500-750GB SATA disk? How much is the system overhead for a 1U unit? I tried to find data on this without too much success. For example Intel says the same number (80W) for an 1.6GHz CPU and a 2.4GHz one -- that does not sound too reliable to me.
If this is too abstract, then I would like to ask aobut the real world power consumption of two boxes. 1 E5410, 8GB of RAM, 2 SATA disk maybe 10K RPM. The other will have two E7320, 24-32GB of RAM and 3 10-15K disk.
2GB ram stick, about 2-5 watts at the most
Normal disks use 7,5 to 15, maybe 17 watts, 10k/15k RPM disks can use up to 25-30 watts from what I've seen on IBM disks. A 10kRPM WD uses about 10. :-)
Those Xeons, the E5410 80W, not sure about the E7320.
Which mainboard are you planning to use? Chipsets can use up to the same power as the CPU, don't underestimate that.
80W? That's a surprise -- that's the figure Intel gives for the whole E54xx series. Also, about the motherboard, very likely whatever Dell uses. Also if the chipset eats a similar amount -- you say that these boxes will eat about 200W? 2A per 1U? Most hosts give you 40A @ 110V so approx 1A per 1U...
I count with 230V..
0,8~1A is a normal amount on 230V for a server (X3220, 2 HDDs, 2 mem DIMMs, plus mainboard), so that'd make about 2 amps on 110Volts.
0,5A on 230Volts is about 1A on 230V, and 0,5 is usually included in packages here as well.