* Nick <n...@holland-consulting.net> [2010-06-13 18:43]:
> >> that might be (I am not convinced tho) with the electricity price in
> >> the US, but certainly isn't universal.
>
> The calculations are.
$/kWh isn't...
> Cost of money (i.e., interest rate), watts saved (if any), cost of a
> kWh, initial costs, etc. Plug in your numbers, find out what the ROI
> is. Add in what your AC costs are (watts in have to be removed, and
> that's more watts to pump them out). Evaluate results.
>
> Going simpler, ignoring cost of money, IF your Atom machine draws 50%
> of the power of my PIII, my quickie calc indicates you will save
> 105kWh. If you also have to pay for AC, maybe double that number.
should be less than 50% actually, at much better performance. the
atoms are surprisingly fast.
> Granted, ROI (Return on Investment) isn't everything.
i would not even remotely consider putting a PIII-era machine into
service now. the cost of the hardware (in the case of smallish
systems) is irrelevant in the big picture.
PIII: old, rusty, reliability questionable, draws more power, adding up
-> might have to invest in bigger A/C sooner
atom: new, reliability way less questionable, has modern interfaces,
saves power, is so cool that it'll survive forever even with all fans
dead, way faster.
heck, the supermicro atoms i buy aren't even cheap. not at all. but
with server-class management, very low power consumption etc, they pay
out quickly. they even would if they cost twice as much, easily.
admittedly, the math is different for home hobby use.
> Low power rack mount equipment is hard to find now
huh? it is easier than ever.
> analog clamp-on ammeter at the time, but they appeared to draw under 60W.
pretty sure my average for new smallish (you know, 1U, reaosnable
amount of ram, 1 disk, that style) machines is below that. not idle,
but with typical workload.
> If you want to talk about "power savings", get a wattmeter and quit
> reading glossy sheets of one tiny part of the entire computer system.
err, besides a stupid useless wattmeter I have dozens, if not hundreds,
of points in my power distribution infratructure where power draw is
measured. live, not artificial test runs.
> The numbers will surprise you. (Fans ALONE on one Dell 1U system
> draw over 50W at full speed. Hopefully, they aren't at full speed
> very often.
either your measurement is screwed or dell screwed up big time.
> My PIII system will pump a LOT of data.
and still lose compared to a reasonable atom.
and for giggles, the dmesg. i forgot the exact power draw of that
system, it was very very low.
OpenBSD 4.7 (GENERIC.MP) #0: Mon Apr 5 08:50:54 CEST 2010
henn...@terak.bsws.de:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Atom(TM) CPU 330 @ 1.60GHz ("GenuineIntel" 686-class) 1.61 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,TM2,CX16,xTPR
real mem = 2145595392 (2046MB)
avail mem = 2070142976 (1974MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 05/05/09, BIOS32 rev. 0 @ 0xf0010, SMBIOS
rev. 2.5 @ 0xfd160 (27 entries)
bios0: vendor American Megatrends Inc. version "1.0" date 05/05/2009
bios0: Supermicro X7SLA
acpi0 at bios0: rev 2
acpi0: tables DSDT FACP APIC MCFG OEMB HPET
acpi0: wakeup devices P0P2(S4) P0P1(S4) PS2K(S4) PS2M(S4) EUSB(S4) MC97(S4)
P0P4(S4) P0P5(S4) P0P6(S4) P0P7(S4) P0P8(S4) LAN0(S1) P0P9(S4) LAN1(S1)
USB0(S4) USB1(S4) USB2(S4) USB3(S4) SLPB(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 133MHz
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Atom(TM) CPU 330 @ 1.60GHz ("GenuineIntel" 686-class) 1.61 GHz
cpu1:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,TM2,CX16,xTPR
cpu2 at mainbus0: apid 1 (application processor)
cpu2: Intel(R) Atom(TM) CPU 330 @ 1.60GHz ("GenuineIntel" 686-class) 1.61 GHz
cpu2:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,TM2,CX16,xTPR
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Atom(TM) CPU 330 @ 1.60GHz ("GenuineIntel" 686-class) 1.61 GHz
cpu3:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,TM2,CX16,xTPR
ioapic0 at mainbus0: apid 4 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 1, remapped to apid 4
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (P0P2)
acpiprt2 at acpi0: bus 4 (P0P1)
acpiprt3 at acpi0: bus 1 (P0P4)
acpiprt4 at acpi0: bus -1 (P0P5)
acpiprt5 at acpi0: bus -1 (P0P6)
acpiprt6 at acpi0: bus -1 (P0P7)
acpiprt7 at acpi0: bus 2 (P0P8)
acpiprt8 at acpi0: bus 3 (P0P9)
acpicpu0 at acpi0
acpicpu1 at acpi0
acpicpu2 at acpi0
acpicpu3 at acpi0
acpibtn0 at acpi0: SLPB
acpibtn1 at acpi0: PWRB
bios0: ROM list: 0xc0000/0xaa00!
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82945G Host" rev 0x02
vga1 at pci0 dev 2 function 0 "Intel 82945G Video" rev 0x02
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x10000000
inteldrm0 at vga1: apic 4 int 16 (irq 10)
drm0 at inteldrm0
ppb0 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x01: apic 4 int 16
(irq 10)
pci1 at ppb0 bus 1
ppb1 at pci0 dev 28 function 4 "Intel 82801G PCIE" rev 0x01: apic 4 int 16 (irq
10)
pci2 at ppb1 bus 2
re0 at pci2 dev 0 function 0 "Realtek 8168" rev 0x02: RTL8168C/8111C (0x3c00),
apic 4 int 16 (irq 10), address 00:30:48:db:03:f2
rgephy0 at re0 phy 7: RTL8169S/8110S PHY, rev. 2
ppb2 at pci0 dev 28 function 5 "Intel 82801G PCIE" rev 0x01: apic 4 int 17 (irq
11)
pci3 at ppb2 bus 3
re1 at pci3 dev 0 function 0 "Realtek 8168" rev 0x02: RTL8168C/8111C (0x3c00),
apic 4 int 17 (irq 11), address 00:30:48:db:03:f2
rgephy1 at re1 phy 7: RTL8169S/8110S PHY, rev. 2
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x01: apic 4 int 23
(irq 5)
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x01: apic 4 int 19
(irq 7)
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x01: apic 4 int 18
(irq 6)
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x01: apic 4 int 16
(irq 10)
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x01: apic 4 int 23
(irq 5)
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb3 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xe1
pci4 at ppb3 bus 4
cbb0 at pci4 dev 0 function 0 "Ricoh 5C475 CardBus" rev 0x81: apic 4 int 20
(irq 10)
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 5 device 0 cacheline 0x0, lattimer 0x40
pcmcia0 at cardslot0
ichpcib0 at pci0 dev 31 function 0 "Intel 82801GB LPC" rev 0x01: PM disabled
pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x01: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
pciide0: channel 0 disabled (no drives)
pciide0: channel 1 disabled (no drives)
ahci0 at pci0 dev 31 function 2 "Intel 82801GR AHCI" rev 0x01: apic 4 int 19
(irq 7), AHCI 1.1
scsibus0 at ahci0: 32 targets
sd0 at scsibus0 targ 0 lun 0: <ATA, SAMSUNG MMCRE64G, VBM1> SCSI3 0/direct fixed
sd0: 61057MB, 512 bytes/sec, 125045424 sec total
ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x01: apic 4 int 19
(irq 7)
iic0 at ichiic0
lm1 at iic0 addr 0x2d: W83627DHG
spdmem0 at iic0 addr 0x50: 1GB DDR2 SDRAM non-parity PC2-5300CL5
spdmem1 at iic0 addr 0x52: 1GB DDR2 SDRAM non-parity PC2-5300CL5
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
lm0 at isa0 port 0x290/8: W83627DHG
lm1 detached
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
mtrr: Pentium Pro MTRR support
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
root on sd0a swap on sd0b dump on sd0b
ohci0 at cardbus0 dev 0 function 0 "Opti 82C861" rev 0x10: irq 268702730,
version 1.0, legacy support
usb5 at ohci0: USB revision 1.0
uhub5 at usb5 "Opti OHCI root hub" rev 1.00/1.00 addr 1
--
Henning Brauer, h...@bsws.de, henn...@openbsd.org
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