Power Supply

Power Supply

Upgrade Your Computer Power Supply

The power supply to a computer is often the most underappreciated component of a computer and can well be a key to better, faster and smoother computer speeds of your computer.

But who ever thinks of that silver box tucked away in the back of your computer?

Most people simply have the power supply that came installed in their computer. If it ever overheats and breaks down, stopping their computer from starting dead cold, that is the only time most computer users ever think of, replace or upgrade their computer.

Imagine if you had an erratic source of electricity to your home that was sparkly, erratic or underpowered. In the same way if the power supply is an inexpensive one it may be erratic in its power output. You may well have upgraded your computer – added drives , added a second cd/dvd reader or burner, a new powerful video card , or a number of external USB devices – whether they be mice, keyboards , external drives powered by the USB port alone , and never thought that you were taxing your limited amperage power supply. All of this extra power usage by these new components that you have added to your computer without thinking of the consequences on your already stretched power supply can both dampen your computer performance and shorten the life of your power supply.

How is computer power supplies rated? Computer power supplies are usually rated by amperage. However this is a peak amperage measurement. This can be of a most optimistic rating. Late in the day – a couple of technicians overseas snap one or two of the better examples of their factories workmanship onto a load meter. They snap on the power briefly and note – did you see that – 500 watts. I’m sure I saw 500 watts says technician number 2 and even 3 and they mark the test results down. And if the numbers do not jive absolutely it can always be blamed on batch consistency or even a different group of products. For after all isn’t it a test of average load of a number of transformers.

Everything in life as they say comes down to practical logistics.

Most of the mass market computer that you will find in big box stores etc is mass produced. This has advantages of low cost and easy repair at the factory. The product has been set up and tested. If there is a problem with the computer it can be easily fixed, in, most cases with a simple swap of components at the factory. The computer model and its common problems and fixes are well known. The flip side is that the components have been carefully sought out, extensively tested and component quality shaved down to the bone.

As a result you do not have a lot of leeway with power supply to any upgrades or simple USB hardware additions to your computer system. Thus it is a wise idea to replace your power supply.

How can you judge which power supplies are better than others. First of all you can do a rough judgment by weight. The better power supplies will have a lot more copper metal in their transformer and will be much heavier. Inexpensive power supplies are very lightweight. You will notice the heavier weight of better power supplies immediately.

Next the better power supplies will have higher wattage. 200 – 300 watts may be fine for older Pentium 2s and 3s; newer computers may well need a minimum of 350 – 400 watts or more. It is not only power in watts but the consistency that matters. The better power supplies will be marked with consistent power output levels on their markings. As well they may be marked as having dual or more channels, What this means is that there are two or more entirely separate power supply channels, Thus there will be one distinct channel of power for the motherboard and another for the peripherals. When a DVD drive comes on it the power supply to the motherboard will not diminish even for a second.

Your computer speed will be smooooooooth.

The last thing to note is either the amount of plug outputs and the amount fans built into the power supply. The better power supplies will have the luxury of providing lots of extra plugs – both for convenience, and the expandability their power supply offers.

As well there may be extra fans to properly cool the better, more powerful power supplies. Even though there may be extra fans, the power supply over may be incredibly quiet due to the higher quality ball bearing based gearings and advanced sophisticated heat sensing power switching controls.

The ac power supply of your computer may well be the most unappreciated taken for granted component of your computer. A better power supply can be one of the keys to increasing the speed and consistent performance of your computer especially as you upgrade your computer adds new components. Might be a good idea to invest in a new. High quality computer power supply.

About the Author

Linux Beginner Resource

Vintage Computer Manuals

Best Learn Linux Before Dead
.

#1082 – Corsair HX750W Power Supply Video Review

eBay Logo  

Dell SX280 SFF  2.8 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$32.00


POWER SUPPLY UNIT for HP TOUCHSMART IQ775/770 DESKTOP 5070-2841


POWER SUPPLY UNIT for HP TOUCHSMART IQ775/770 DESKTOP 5070-2841


$45.00


POWER SUPPLY UNIT for HP TOUCHSMART IQ775/770 DESKTOP 5070-2841


POWER SUPPLY UNIT for HP TOUCHSMART IQ775/770 DESKTOP 5070-2841


$45.00


Dell SX280 SFF  2.8 GHz 1GB 80GB CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB 80GB CDRW/DVD XP Pro COA Power Supply TESTED


$39.00


ZALMAN Desktop No Power Supply HD501


ZALMAN Desktop No Power Supply HD501


$252.16


ZALMAN Desktop No Power Supply HD501


ZALMAN Desktop No Power Supply HD501


$234.99


Dell SX280 SFF  2.8 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$32.00


Dell SX280 SFF  3.2 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 3.2 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$49.00


Bantam Wayport dual LAN VIA EPIA PC, mATX case, 180W power supply/40GB WD400 HDD


Bantam Wayport dual LAN VIA EPIA PC, mATX case, 180W power supply/40GB WD400 HDD


$45.00


Shuttle XPC Glamor Series  Computer Case with Cooler Fan and 3000W Power Supply


Shuttle XPC Glamor Series Computer Case with Cooler Fan and 3000W Power Supply


$3.58


Gateway computer parts, good 200 Watt power supply


Gateway computer parts, good 200 Watt power supply


$8.50


HP M9500Y DESKTOP PC COMPUTER FOR PARTS: DVDRW WIFI card Power supply


HP M9500Y DESKTOP PC COMPUTER FOR PARTS: DVDRW WIFI card Power supply


$69.99


HP DESKTOP PC COMPUTER FOR PARTS: DVDRW lightscribe + Power supply + ....


HP DESKTOP PC COMPUTER FOR PARTS: DVDRW lightscribe + Power supply + ….


$49.99


IBM Thinkcentre M51 desktop case, power supply Floppy, switch board...


IBM Thinkcentre M51 desktop case, power supply Floppy, switch board…


$34.87


Dell SX280 SFF  2.8 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$32.00


HIPRO HP - A3108F3P  Power Supply HPPOWERA3108F3P


HIPRO HP – A3108F3P Power Supply HPPOWERA3108F3P


$27.99


black logisys power supply


black logisys power supply


$15.00


Dell SX280 SFF  2.8 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$32.00


Zenith 234-850 Power supply for ZFX-0248 Desktop Computer


Zenith 234-850 Power supply for ZFX-0248 Desktop Computer


$74.58


Custom PC - Antec Chassis & Power Supply AMD Athlon 64 2.4GHz,2GB RAM,CD


Custom PC – Antec Chassis & Power Supply AMD Athlon 64 2.4GHz,2GB RAM,CD


$0.99


Dell SX280 SFF  2.8 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$32.00


Dell PowerEdge 6850 1470W Power Supply XJ192 USED


Dell PowerEdge 6850 1470W Power Supply XJ192 USED


$18.99


Dell Optiplex GX 260 Power Supply


Dell Optiplex GX 260 Power Supply


$15.00


eMachines T6542 Power Supply Power Adapter Replacement Part


eMachines T6542 Power Supply Power Adapter Replacement Part


$19.99


Dell SX280 SFF  2.8 GHz 1GB  CDRW/DVD XP Pro COA  Power Supply       TESTED


Dell SX280 SFF 2.8 GHz 1GB CDRW/DVD XP Pro COA Power Supply TESTED


$32.00


EVGA x58 motherboard,I7 920 D0, EVGA GTX 275,Velociraptor 300gb,1KW power supply


EVGA x58 motherboard,I7 920 D0, EVGA GTX 275,Velociraptor 300gb,1KW power supply


$200.00


8 IBM NetVista 25U Desktop Case, some with Power Supply, Win XP Pro CoA


8 IBM NetVista 25U Desktop Case, some with Power Supply, Win XP Pro CoA


$80.00


Used PC loaded but with dead power supply, see list / specs, 100% satisfaction


Used PC loaded but with dead power supply, see list / specs, 100% satisfaction


$89.95


HP XW8600 Workstation Barebones PSU Dual Socket 439241-002 Board Power Supply


HP XW8600 Workstation Barebones PSU Dual Socket 439241-002 Board Power Supply


$349.99


NEW DIGI 76000694 INTERNATIONAL - PORTSERVER II DESKTOP POWER SUPPLY 120-2


NEW DIGI 76000694 INTERNATIONAL – PORTSERVER II DESKTOP POWER SUPPLY 120-2


$110.39


DELL OPTIPLEX 760 CORE 2 DUO 2.66GHZ 2GB 80GB DVD-RW USFF + POWER SUPPLY


DELL OPTIPLEX 760 CORE 2 DUO 2.66GHZ 2GB 80GB DVD-RW USFF + POWER SUPPLY


$169.99


IBM 06H2968 100W Power Supply for PC350 Desktop Computer


IBM 06H2968 100W Power Supply for PC350 Desktop Computer


$26.78


Zenith 234-859 Power supply for ZFX-0248 Desktop Computer


Zenith 234-859 Power supply for ZFX-0248 Desktop Computer


$74.58


Delta DPS-300KB-1 A 300W Power Supply


Delta DPS-300KB-1 A 300W Power Supply


$30.00


Chip CPN02508            -SPARE POWER SUPPLY


Chip CPN02508 -SPARE POWER SUPPLY


$44.90


** 1 **working Gateway Profile 5 power supply ADP-180AB


** 1 **working Gateway Profile 5 power supply ADP-180AB


$38.00


DELL Poweredge R710 T610 870W Power Supply YFG1C 7NVX8 TESTED


DELL Poweredge R710 T610 870W Power Supply YFG1C 7NVX8 TESTED


$95.00


HP LJ 3050 / 3052 / 3055 110V Power Supply Assembly


HP LJ 3050 / 3052 / 3055 110V Power Supply Assembly


$40.00


HP LaserJet 3050 / 3052 / 3055 110V Power Supply


HP LaserJet 3050 / 3052 / 3055 110V Power Supply


$40.00


Dell 755 USFF  Core 2 Duo , 2 gig 80gb   with Power supply 10 Piece Lot


Dell 755 USFF Core 2 Duo , 2 gig 80gb with Power supply 10 Piece Lot


$1,395.00


Dell 755 USFF  3.4ghz Pentium D , 1 gig 80gb  with Power supply 10 Piece Lot


Dell 755 USFF 3.4ghz Pentium D , 1 gig 80gb with Power supply 10 Piece Lot


$1,195.00


DELL OPTIPLEX SX280 DESKTOP PC 1 GB  W/ POWER SUPPLY WORKS


DELL OPTIPLEX SX280 DESKTOP PC 1 GB W/ POWER SUPPLY WORKS


$99.95


DELL OPTIPLEX SX280 DESKTOP PC 1 GB  3.2 Mhz W/ POWER SUPPLY WORKS ITEM#2


DELL OPTIPLEX SX280 DESKTOP PC 1 GB 3.2 Mhz W/ POWER SUPPLY WORKS ITEM#2


$99.95


DELL OPTIPLEX SX280 DESKTOP PC 1 GB  3 Mhz W/ POWER SUPPLY WORKS ITEM#3


DELL OPTIPLEX SX280 DESKTOP PC 1 GB 3 Mhz W/ POWER SUPPLY WORKS ITEM#3


$99.95


Dell Alienware R2 Aurora Black Lighting Gaming Case Chassis w 875w Power Supply


Dell Alienware R2 Aurora Black Lighting Gaming Case Chassis w 875w Power Supply


$179.99


DELL N2286 250W Power Supply  ~


DELL N2286 250W Power Supply ~


$24.95


IBM POWER SUPPLY 625W X SERIES 346 74P4411


IBM POWER SUPPLY 625W X SERIES 346 74P4411


$39.99


Intel Optiplex 740 745 755 SFF Power Supply MH300 RW739


Intel Optiplex 740 745 755 SFF Power Supply MH300 RW739


$39.99


IBM 8677-3RU-B3 BladeCenter E Chassis - Rack-mountable - 7U - power supply - hot


IBM 8677-3RU-B3 BladeCenter E Chassis – Rack-mountable – 7U – power supply – hot


$127.00


IBM 8677-3RU BladeCenter E Chassis - Rack-mountable - 7U - 2x power supply - DVD


IBM 8677-3RU BladeCenter E Chassis – Rack-mountable – 7U – 2x power supply – DVD


$137.00


Dell Precision 690 1000w Power Supply ND285 USED


Dell Precision 690 1000w Power Supply ND285 USED


$109.99


Qbic QB3704SG Compact Desktop Computer Parts/Repair Motherboard Power Supply


Qbic QB3704SG Compact Desktop Computer Parts/Repair Motherboard Power Supply


$84.99


NEW Mini Fanless PC Silent Computer Kit: Intel CPU/MB + Card Reader,Power Supply


NEW Mini Fanless PC Silent Computer Kit: Intel CPU/MB + Card Reader,Power Supply


$145.99


Apple Imac G5 17


Apple Imac G5 17″ LCD 1.6 ghz 2gb Ram New Mother board New Power Supply


$225.99


Dell PowerVault Autoloader 122T Power Supply KM86-LCL


Dell PowerVault Autoloader 122T Power Supply KM86-LCL


$49.99


Advantech IPC-6806BP-20ZB 6-Slot Desktop/Wallmount Chassis+Power Supply Unit


Advantech IPC-6806BP-20ZB 6-Slot Desktop/Wallmount Chassis+Power Supply Unit


$199.99


SAMLEX REGULATED DC POWER SUPPLY RPS1210


SAMLEX REGULATED DC POWER SUPPLY RPS1210


$44.99


Apple iMac 20


Apple iMac 20″ AC/DC SATA, Power supply Inverter cable


$9.75


Apple iMac 24


Apple iMac 24″ AC/DC SATA, Power supply Inverter cable


$9.85


FAST 2.8 GHz DELL OPTIPLEX SX270+WinXP Pro+Office 2003+Power Supply 40GB


FAST 2.8 GHz DELL OPTIPLEX SX270+WinXP Pro+Office 2003+Power Supply 40GB


$99.00


FAST 2.4 GHz DELL OPTIPLEX SX270+WinXP Pro+Office 2003+Power Supply+40GB


FAST 2.4 GHz DELL OPTIPLEX SX270+WinXP Pro+Office 2003+Power Supply+40GB


$99.00


DYNEX PC MIDTOWER WITH 500 WATT WITH ATX12V Ver 2.2 POWER SUPPLY DX-MIDTWER


DYNEX PC MIDTOWER WITH 500 WATT WITH ATX12V Ver 2.2 POWER SUPPLY DX-MIDTWER


$15.00


Lot of 40 PC computer Power Supply Cord Printer Cable


Lot of 40 PC computer Power Supply Cord Printer Cable


$39.95


HP 480W HP-D3057F3R 5188-2625 DPS-300AB POWER SUPPLY


HP 480W HP-D3057F3R 5188-2625 DPS-300AB POWER SUPPLY


$13.95


Replacement Power Supply for 2Wire HG2701 Modem, 1000-500031-000


Replacement Power Supply for 2Wire HG2701 Modem, 1000-500031-000


$9.45


Dell Optiplex 755 USFF Computer with Power Supply *Perfect Working Order*


Dell Optiplex 755 USFF Computer with Power Supply *Perfect Working Order*


$179.99


Cisco 3660 250W Power Supply 34-1657-01 USED


Cisco 3660 250W Power Supply 34-1657-01 USED


$39.99


HP 593188-B21          -HP 593188-B21 Proprietary Power Supply - 94%


HP 593188-B21 -HP 593188-B21 Proprietary Power Supply – 94%


$201.78


NEW Mini Fanless PC Silent Computer Kit: Intel CPU/MB,AC-DC-ATX Power Supply PSU


NEW Mini Fanless PC Silent Computer Kit: Intel CPU/MB,AC-DC-ATX Power Supply PSU


$145.99


NEW Mini Fanless PC Barebone: Intel CPU/MB,Universal AC-DC-ATX Power Supply PSU


NEW Mini Fanless PC Barebone: Intel CPU/MB,Universal AC-DC-ATX Power Supply PSU


$145.99


HP 593188-B21          -HP 593188-B21 Proprietary Power Supply - 94% - Kit


HP 593188-B21 -HP 593188-B21 Proprietary Power Supply – 94% – Kit


$217.92


Power Supply board for Gateway  profile 4


Power Supply board for Gateway profile 4


$12.99


HP Quantum Adic IBM autoloader KM86/LCL power supply


HP Quantum Adic IBM autoloader KM86/LCL power supply


$49.99


Dell Optiplex 760 SFF Barebone - Case Motherboard Heatsink Power Supply Tested


Dell Optiplex 760 SFF Barebone – Case Motherboard Heatsink Power Supply Tested


$40.00


Dell Grey Alienware Area 51 Lighting Chassis 1100w Power Supply Gaming Case


Dell Grey Alienware Area 51 Lighting Chassis 1100w Power Supply Gaming Case


$319.99


DELL OPTIPLEX GX620 DCTR DESKTOP COMPUTER PC / TERMINAL, NO POWER SUPPLY - USED


DELL OPTIPLEX GX620 DCTR DESKTOP COMPUTER PC / TERMINAL, NO POWER SUPPLY – USED


$98.15


Lot of 4 Desktop Power Supply Untis 300w (12 Pin)


Lot of 4 Desktop Power Supply Untis 300w (12 Pin)


$58.24


Lot of 3 Desktop Power Supply Untis 300w


Lot of 3 Desktop Power Supply Untis 300w


$44.53


J&W MINIX MINI HD PC with power supply Barebone Desktop


J&W MINIX MINI HD PC with power supply Barebone Desktop


$181.99


Shuttle SK41G XPC Unopened-  Case, System Board, Power Supply New Mini Desktop


Shuttle SK41G XPC Unopened- Case, System Board, Power Supply New Mini Desktop


$120.00


IBM Bladecenter Power Supply Unit 74P4452


IBM Bladecenter Power Supply Unit 74P4452


$33.99


Dell Poweredge 1750 320W Power Supply M1662 USED


Dell Poweredge 1750 320W Power Supply M1662 USED


$14.99


Lot of 3 Desktop Power Supply Untis 300w


Lot of 3 Desktop Power Supply Untis 300w


$97.87


GATEWAY DX4850 DX4860 COMPUTER CASE WITH POWER SUPPLY


GATEWAY DX4850 DX4860 COMPUTER CASE WITH POWER SUPPLY


$69.00


Intel 1.6Ghz Auto CAR Truck Compact Computer PC with Power Supply Module


Intel 1.6Ghz Auto CAR Truck Compact Computer PC with Power Supply Module


$199.00


COMPAQ PROLIANT Hot Swap Power Supply #169286-002


COMPAQ PROLIANT Hot Swap Power Supply #169286-002


$6.99


COMPAQ PROLIANT 8500 Hot Swap Power Supply #122235-001


COMPAQ PROLIANT 8500 Hot Swap Power Supply #122235-001


$6.99


Compaq PS4040 #224208-001 OR #224207-001 Power Supply 


Compaq PS4040 #224208-001 OR #224207-001 Power Supply 


$16.00


Compaq Power Supply PS4040 #224208-001 OR #224207-001  


Compaq Power Supply PS4040 #224208-001 OR #224207-001  


$16.00


Chip CPN02508            -SPARE POWER SUPPLY              - Kit


Chip CPN02508 -SPARE POWER SUPPLY – Kit


$53.88


AcBel 340W POWER SUPPLY 24P6801


AcBel 340W POWER SUPPLY 24P6801


$20.00


COMPAQ PROLIANT 2500 Power Supply #300917-001 RPS NEW!!


COMPAQ PROLIANT 2500 Power Supply #300917-001 RPS NEW!!


$30.00


Hp power supply Hippro HP-K1603A3


Hp power supply Hippro HP-K1603A3


$18.99


Shuttle PC61J 300W Power Supply for SG41J1/SG41J4/SH55J2/SH61R4


Shuttle PC61J 300W Power Supply for SG41J1/SG41J4/SH55J2/SH61R4


$90.00


Dell Alienware R2 Aurora Black Lighting Gaming Case Chassis w 500w Power Supply


Dell Alienware R2 Aurora Black Lighting Gaming Case Chassis w 500w Power Supply


$134.99

Categories: Uncategorized