Here is a digest of power consumption for various computers.

Idle Power Consumption - RISC
Model Processor(s) Clock Memory Storage Peripherals Idle Power
Sun Ultra 10 UltraSPARC IIi 1×360MHz 4×128 MB EDO ECC Seagate ST336754LW Ultra320/15k
LG CRD-8322B ATA 32X CDROM
Symbios SYM22801 75 W
Sun Ultra 10 UltraSPARC IIi 1×360MHz 4×128 MB EDO ECC Seagate ST336754LW Ultra320/15k
LG CRD-8322B ATA 32X CDROM
Symbios SYM22801
SunPCi I / 300MHz / 256MB
83 W
Sun Ultra 60 UltraSPARC II 2×360MHz 8×64+4×128 MB EDO ECC Seagate ST1181677LCV Ultra160/7.2k
Toshiba XM-6201TA 32X CDROM
Sun Creator3D FFB3+ 153 W
Sun Ultra 60 UltraSPARC II 2×360MHz 8×64+4×128 MB EDO ECC 2×Seagate ST1181677LCV Ultra160/7.2k
Toshiba XM-6201TA 32X CDROM
Sun Creator3D FFB3+ 158 W
Sun Blade 150 UltraSPARC IIi 1×550MHz
 
2×256 MB PC133 Unbuf ECC Seagate ST340014A
Samsung DVD/CD-RW ATA
  33 W
Sun Blade 1000 UltraSPARC III 1×750MHz 4×256 MB
4×512 MB
PC100 ECC 36GB FC-AL 15K
Toshiba SD-M1401 SCSI 16X DVD
Sun PGX64 210 W
Sun Blade 1000 UltraSPARC III 2×750MHz 4×256 MB
4×512 MB
PC100 ECC 36GB FC-AL 15K
Toshiba SD-M1401 SCSI 16X DVD
Sun PGX64 288 W
Sun Blade 2000 UltraSPARC III Cu 1×900MHz 4×256 MB
4×512 MB
PC100 ECC 2 × ST373307FC FC/10k
Toshiba SD-M1401 SCSI 16X DVD
Sun PGX64
Sun Gigabit Ethernet
215 W
Sun Blade 1500 Red UltraSPARC IIIi 1×1062MHz 4×512 MB PC2100 ECC CL2.0 2 × Seagate ST38011A ATA100/7.2K
Lite-On XJ-HD166S ATA 16X DVD
Sun Expert3D Lite
Sun USB2.0/Firewire Combo
122 W
Sun Blade 1500 Red UltraSPARC IIIi 1×1062MHz 4×512 MB PC2100 ECC CL2.0 1 × Seagate ST38011A ATA100/7.2K
Lite-On XJ-HD166S ATA 16X DVD
Sun XVR-600
Sun USB2.0/Firewire Combo
111 W
Sun Blade 1500 Silver UltraSPARC IIIi 1×1502MHz 4×512 MB PC2100 ECC CL2.0 Seagate ST380011A ATA100/7.2K
Toshiba SD-R1512 ATA 16X DVD
Sun XVR-600
Sun USB2.0/Firewire Combo
138 W
Sun Blade 2500 UltraSPARC IIIi 2×1600MHz 4×1024 MB
4×2048 MB
PC2700 ECC 2 × Maxtor Atlas 15K II Ultra320/15k
DVD ATA
Sun XVR-100
Sun USB2.0/Firewire Combo
283 W
Power Mac G4 PowerPC 7450 1×933MHz 1×512 MB
2×512 MB
PC133
PC100
60GB IBM IC35L060AVVA07-0 ATA/66
2 × ST336754LW Ultra320/15k
Pioneer DVR-104 ATA 6X DVD-RW
ATI Radeon 9000
Adaptec ASC-29160N
69 W
Power Mac G4 PowerPC 7450 1×933MHz 1×512 MB
2×512 MB
PC133
PC100
60GB IBM IC35L060AVVA07-0 ATA/66
2 × ST373307LW Ultra320/10k
Pioneer DVR-104 ATA 6X DVD-RW
ATI Radeon 9000
Adaptec ASC-29160N
73 W
SGI O2 MIPS R5000
 
1×180MHz 6×32 MB PC-133 ECC 9.1 GB SCSI
36.7 GB SCSI
  85 W
SGI Fuel MIPS R14000
 
1×500MHz 2×1024 MB PC-3200 ECC Seagate ST373 series Ultra160/10k SGI VPro V12 223 W

Below are some power consumption ratings inferred from testing entire systems.

Component Power Consumption
Component Power
Consumption
Notes
Seagate ST373307LW Ultra320/10k 5 W Difference between spun up and spun down in Power Mac G4