Overclock.net › Forums › Components › Power Supplies › Can someone explain 20 and 20+4 connectors?
New Posts  All Forums:Forum Nav:

Can someone explain 20 and 20+4 connectors?

post #1 of 14
Thread Starter 
I have never built a PC before and im going to do so in a few weeks.


can someone explain the 20 and 20+4 pin? and what should I use with my mobo?

all my stats are at the bottom
My System
(13 items)
 
  
CPUMotherboardGraphicsOS
Opty 170 CCBWE 0550 UPMW (2.6GHZ) Asus A8N32 Deluxe ATI X1900XT 648/774 Windows XP, Vista, Linux Ubunutu 
MonitorKeyboardPowerCase
17" CRT Zboard Merc Seasonic S12-600HT 600W Antec P180 
Mouse
Logitech G7 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsOS
Opty 170 CCBWE 0550 UPMW (2.6GHZ) Asus A8N32 Deluxe ATI X1900XT 648/774 Windows XP, Vista, Linux Ubunutu 
MonitorKeyboardPowerCase
17" CRT Zboard Merc Seasonic S12-600HT 600W Antec P180 
Mouse
Logitech G7 
  hide details  
Reply
post #2 of 14
It is the big connector from the PSU into the MOBO. They used to be 20 pin, but nowadays they tend to be 24 pin. You can get a small and cheap converter, that makes a 20 pin into a 24 pin.

Some MOBO's run fine, with just the 20 plugged into the 24 pin socket.

What goes to your mobo, you can see in the manual. You can find it online at the manufacturers webside.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
P4 640 3.2GHz @ 3.85GHz Asus P5WD2-E PREMIUM XP/SP2 19" AOC 
KeyboardPowerCaseMouse
Logitech 450w, papst modified Who gives a ****? Logitech 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
P4 640 3.2GHz @ 3.85GHz Asus P5WD2-E PREMIUM XP/SP2 19" AOC 
KeyboardPowerCaseMouse
Logitech 450w, papst modified Who gives a ****? Logitech 
  hide details  
Reply
post #3 of 14
24 pin has more pins and almost every new motherboard is setup this way. It gives extra power.
E6600
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6600 C2D @ 3.6 P5B-D EVGA 7600GT 2GB Gskill HZ 
Hard DriveOptical DriveOSMonitor
74gb Raptor Samsung DVD+ XP LG 19inch 
PowerCase
Rosewill 600w Raidmax Silmodon 
  hide details  
Reply
E6600
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6600 C2D @ 3.6 P5B-D EVGA 7600GT 2GB Gskill HZ 
Hard DriveOptical DriveOSMonitor
74gb Raptor Samsung DVD+ XP LG 19inch 
PowerCase
Rosewill 600w Raidmax Silmodon 
  hide details  
Reply
post #4 of 14
The extra four pins on the new ATX connectors provide more power to the video card. Plugging a 20 pin connector into a 24-pin mobo will sometimes work, but I would not advise it, because it often creates instability. Also avoid 20-24 pin adapters.

20+4 pin plugs give you the option of removing the extra 4-pins. Hence, they're backwards compatible, for older motherboards.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6700 Kentsfield DFI DK P35-T2RS eVGA 9800GTX 512MB G.SKILL DDR2-800 4x2GB 
Hard DriveOptical DriveMonitorKeyboard
160GB WD SATA2 Pioneer DVD-ROM Acer 22 in. Saitek Eclipse II 
PowerCaseMouse
PC Power & Cooling 750W Antec P182 Logitech MX518 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6700 Kentsfield DFI DK P35-T2RS eVGA 9800GTX 512MB G.SKILL DDR2-800 4x2GB 
Hard DriveOptical DriveMonitorKeyboard
160GB WD SATA2 Pioneer DVD-ROM Acer 22 in. Saitek Eclipse II 
PowerCaseMouse
PC Power & Cooling 750W Antec P182 Logitech MX518 
  hide details  
Reply
post #5 of 14
if you have a seperate power lead just for the graphics card would that mean it would be ok to use a 20 pin plug on a 24 pin borad?
    
CPUGraphicsRAMHard Drive
Intel® Core™ 2 Duo T7700 2.4GHz 256MB NVIDIA® GeForce® 8600M GT 2GB Shared Dual Channel DDR2 at 667MHz 2 x 320GB Western Digital WD3200BEVT 5400 RPM SATA 
Optical DriveOSMonitor
CD / DVD writer (DVD+/-RW) Windows Vista® Ultimate Edition 17" High Resolution 1920x1200 
  hide details  
Reply
    
CPUGraphicsRAMHard Drive
Intel® Core™ 2 Duo T7700 2.4GHz 256MB NVIDIA® GeForce® 8600M GT 2GB Shared Dual Channel DDR2 at 667MHz 2 x 320GB Western Digital WD3200BEVT 5400 RPM SATA 
Optical DriveOSMonitor
CD / DVD writer (DVD+/-RW) Windows Vista® Ultimate Edition 17" High Resolution 1920x1200 
  hide details  
Reply
post #6 of 14
With ur motherboard I suggest you to use the 24 pins. As with my Asus mobo b4 required 24 pins but I used only 20 pins. And...my system wasn't stable and when I overclocked my motherboard killed that 20 pins bad boy, and I bought the 24 pins and I'm all set now.
My System
(13 items)
 
  
CPUMotherboardGraphicsHard Drive
C2D E6300 PB5 Deluxe WiFi 7300GT 250GB SAMSUNG 
OSMonitorKeyboardPower
Win XP Professional SP2 SyncMAster 713v BenQ 550HeAntec 
CaseMouse
Lian-Li G5 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsHard Drive
C2D E6300 PB5 Deluxe WiFi 7300GT 250GB SAMSUNG 
OSMonitorKeyboardPower
Win XP Professional SP2 SyncMAster 713v BenQ 550HeAntec 
CaseMouse
Lian-Li G5 
  hide details  
Reply
post #7 of 14
oh i have a 24pin its ok. i was just wondering for other people u know
    
CPUGraphicsRAMHard Drive
Intel® Core™ 2 Duo T7700 2.4GHz 256MB NVIDIA® GeForce® 8600M GT 2GB Shared Dual Channel DDR2 at 667MHz 2 x 320GB Western Digital WD3200BEVT 5400 RPM SATA 
Optical DriveOSMonitor
CD / DVD writer (DVD+/-RW) Windows Vista® Ultimate Edition 17" High Resolution 1920x1200 
  hide details  
Reply
    
CPUGraphicsRAMHard Drive
Intel® Core™ 2 Duo T7700 2.4GHz 256MB NVIDIA® GeForce® 8600M GT 2GB Shared Dual Channel DDR2 at 667MHz 2 x 320GB Western Digital WD3200BEVT 5400 RPM SATA 
Optical DriveOSMonitor
CD / DVD writer (DVD+/-RW) Windows Vista® Ultimate Edition 17" High Resolution 1920x1200 
  hide details  
Reply
post #8 of 14
Actually aren't the extra 4 feeds for CPU & northbridge stability? I may be way off, but i don't think its for video. Wouldn't that be the 6 pin PCIe connection and/or the 4 pin molex that some cards/boards have?
My System
(13 items)
 
  
CPUMotherboardGraphicsHard Drive
4000+ A64 Sandy DFI Lanparty-UT NF4 Ultra X800 1.2 TB in 500, 320, 200, 200 
OSMonitorKeyboardPower
Vista Ultimate x86 42" 1080p LCD M$ Bluetooth KB OCZ GameXtream 700w 
CaseMouse
TT Tsunami Dream M$ Bluetooth Optical 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsHard Drive
4000+ A64 Sandy DFI Lanparty-UT NF4 Ultra X800 1.2 TB in 500, 320, 200, 200 
OSMonitorKeyboardPower
Vista Ultimate x86 42" 1080p LCD M$ Bluetooth KB OCZ GameXtream 700w 
CaseMouse
TT Tsunami Dream M$ Bluetooth Optical 
  hide details  
Reply
post #9 of 14
Just as a tip if you don't have a 20+4 pin PSU:

24-20 pin adapters are OK

20-24 pin adapters are BAD

It's OK to go down, but not up.
post #10 of 14
sorry to steal but what about my mobo safe for 20 pin?

It's not running yet it will be today though?
Money Snatcher
(13 items)
 
  
KeyboardCaseMouse
Mircrosoft Natural Ergonomic Cosoms S modded Logitech Revolution 
  hide details  
Reply
Money Snatcher
(13 items)
 
  
KeyboardCaseMouse
Mircrosoft Natural Ergonomic Cosoms S modded Logitech Revolution 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › Can someone explain 20 and 20+4 connectors?