Question about Gigabyte GA-8IE533 Motherboard

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12v 4-pin connector issues

I recently had the power supply on my PC go out. After ordering a new one and installing, the computer will still not power up. I tested the new power supply and it is good. After some troubleshooting I found that the power supply itself will power up only when the 12 volt 4-pin connector is not attatched to the mother board. Even then, only the power supply activates, not the motherboard itself or anything else in the computer, for that matter. Any suggestions? Thanks in advance.

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Sounds like your board has some issues (might of even caused your power supply to fail) try unplugging all IDE devices, removing pci slotted cards and anything else plugged into the board so you are only left with the Motherboard, Processor and Memory. Try to start the board now to see if one of your devices was causing the problem. If the board now comes on, try installing the devices back one by one to see which one is causing the problem. If that still doesn't work, try to further test your possible to see if they are working correctly. If all that fails, your board is probably the cause and needs to be replaced. Good Luck.

Posted on Apr 24, 2007

  • Dan Brachacek Apr 24, 2007

    EDIT - if that still doesn't work, try to further test your processor and memory in another motherboard to see if they are working correctly. If all that fails, your board is probably the cause and needs to be replaced. Good Luck.

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2 WIRES FOR 12V SUPPLY. PIN NOs 2 WIRES for Signal PIN Nos. ??


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Dec 16, 2015 | Cars & Trucks

1 Answer

New GA-990AX-UD3 motherboard will not boot


You really should take that Power Supply, and use it on grandma's computer.

The 8-pin EPS +12 Volt power cable was brought out, to provide more power To the motherboard AND processor.

http://www.playtool.com/pages/psuconnectors/connectors.html#eps8

The 4-pin ATX +12 Volt power cable has TWO yellow wires.
Yellow wires are 12 Volt wires. (And two Black ground wires)

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

The 8-pin EPS +12 Volt power cable has FOUR 12 Volt wires.

In the motherboard manual, does it say, "Yes Tom. Go ahead and use a 4-pin ATX +12 Volt power cable. We don't care. We just use an 8-pin EPS for fun."

[ This is an 8-pin PCI Express power cable. Completely different,

http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress8 ]

The motherboard probably uses 150 Watts by itself.
No Ram Memory, no CPU, no fans, etc.

The CPU could use up to 125 Watts of power. Just depends on what AMD, socket AM3, processor you are using.

Now to graphics card's power;
The most Wattage a PCI-Express x16 slot can deliver is 75 Watts.

The most power a 6-pin PCI Express power cable can deliver is 75 Watts.
8-pin EPS +12 Volt power cable? 150 Watts.

When buying a Power Supply you should calculate all components needing power,

http://extreme.outervision.com/psucalculatorlite.jsp

,then buy a Power Supply that has AT LEAST 10 percent more power than needed. Easier on the Power Supply.
Also a computer will NOT use more power than it needs.

10,000 Watt power supply, (Exaggeration ), and the computer only needs about 100 Watts for surfing the internet?

Computer ONLY uses 100 Watts.

Due to the price, the above, and the availability, you should use a 500 Watt power supply at least.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=899123&CatId=1079

http://www.amazon.com/StarTech-6in-Pin-Power-Adapter/dp/B002O21XHQ

Or use it on yours if it has enough Wattage.

Back in the day, the motherboard didn't need to supply that much power to components on it.
More powerful Processors, Ram Memory, and graphics cards, brought the power needed, up.

A 4-pin ATX +12 Volt power cable was added for the motherboard. Then 6-pin PCI Express power cable for graphics cards. Then the 8-pin PCI Express power cable for graphics cards. Lastly the 8-pin EPS +12 Volt power cable.

(Better make sure the Power Supply you have is good, if you wish to use the above power adapter cable. Nothing like having a Power Supply with a weak voltage power rail, and a new build, to pull your hair out on )

http://www.gigabyte.com/products/product-page.aspx?pid=3894#ov


Out of the motherboard manual Page 23,

"With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design.

Connect the power supply cable to the power connector in the correct orientation. The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start.

To meet expansion requirements, it is recommended that a power supply that can withstand high power consumption be used (500W or greater). If a power supply is used that does not provide the required power, the result can lead to an unstable or unbootable system."

For additional questions please post in a Comment.

Regards,
joecoolvette

Oct 25, 2012 | Gigabyte Technology GA-990FXA-UD3-...

1 Answer

My motherboard takes this: 1 x 8-pin ATX 12V power connector. My PSU (power supply) only has the 4-pin 12V power connector. Can someone please point me to a product that will convert the 4-pin to an...


Better than Amazon.com Andrew,

http://www.directron.com/ad202.html

Converts two 4-pin standard Peripheral power cables, (Molex) to one female 8-pin EPS +12 Volt power cable.

4-pin Peripheral +12 Volt power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

[ NOTE*
Designated a 4-pin Standard Peripheral power cable, because there is a 4-pin Small peripheral power cable ]

A) 8-pin EPS +12 Volt power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#eps8


B) Note the difference from an 8-pin PCI Express power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress8

{4-pin Small peripheral power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#floppy

Used on the older Floppy Drives, and also used on today's Card Readers in desktop computers }

Apr 16, 2011 | HP Computers & Internet

2 Answers

My motherboard takes this: 1 x 8-pin ATX 12V power connector My PSU (power supply) only has the 4-pin 12V power connector. Can someone please point me to a product that will convert the 4-pin to an...


Hi Andrew.
Just had a look arouund on Amazon, and if you do a search for

EPS 8-Pin Power to ATX 4-Pin Cable

There are a couple that turn up.

Hope this helps.

Apr 16, 2011 | Computers & Internet

3 Answers

What is the watt for a power supply for a compaq presario sr2020nx. the computer will not turn on. i checked all other possible power sources.


Looks like it comes with a 550w power supply, so anything in that range would be fine. Below are the specifics if you need them.
Best of luck, William
-------- " Replacement power supply for Compaq Presario SR2020NX- 550 Watt Replacement Power Supply Upgrade
- One (1) 20+4 ATX Power Connection
- Two (2) SATA Connections
- Four (4) large molex connector (4-pin)
- One (1) One (1) floppy connector (4-pin)
- One (1) ATX 12V connector (4-pin)
- One (1) 6-pin PCI-Express Connection (6-pin)
- ATX Form Factor
- 575 Watt Replacement Power Supply
- Input Voltage: 100 - 240 Volts AC
- Width: 5.75"; Height: 3.25"; Depth: 6.0"
- Voltage: +3.3V (38A); +5V (40A); +12V (25A); -5V (0.5A); -12V (0.8A); +5V (2A)
SATA Support
- Supports both 20 and 24 pin motherboard. Great Power Supply Replacement or Upgrade. Compaq PSU Presario SR2020NX Power Supply Replacement"

Mar 03, 2011 | HP Compaq Presario SR2020NX PC Desktop

1 Answer

This is my first build and all the connections are a bit confussing need picts of how to install cables to hardware


The following picture will definitely help you to install new power supply.
mbdguru_0.jpg
The 4 pin CPU power connector is using in most of the desktop motherboard. If your motherboard is gaming type or workstation board you need to connect 8pin CPU power connector. Molex connectors are using to power up DVD Drives and HDDs. In New model power supply instead of molex connector SATA Power connectors are coming.

Feb 12, 2011 | Thermaltake Toughpower XT TPX675M 675W ATX...

2 Answers

I've got a new Gigabyte Ga-M68Mt-D3 mobo paired with a cooler master 460 watt power supple. Cpu is Amd phenom II 3.2 ghz with 4 gig of DDR3 ram. I powered up the supply attached to my ATX power supply...


Most motherboards now have a 24-pin power supply connector. If you haven't already found a diagram showing the pinouts of the 20- and 24-pin power plugs, here's one borrowed from a handy site:

pgh_pa_guy_1.jpg

The two plugs are essentially the same, but the 24-pin version duplicates some voltages on the extra pins. The extra pins in the larger connector were meant to provide extra current paths for voltages that see heavy loads from newer processors and motherboard circuitry. Depending on how a motherboard is designed, it might work with a 20-pin plug connected (leaving pins 11, 12, 23 and 24 empty). But typically if the board has a 24-pin connector it needs the 24-pin power supply plug.

Most power supplies have a 20-pin plug with a separate 4-pin section that fastens to it for connection to a 24-pin mobo connector. It typically has one side designed to slide onto the end of the 20-pin plug, essentially turning it into the 24-pin version. This added plug does not have a retaining clamp on its side, so you can tell it from the the 4-pin CPU power plug. The wire colors are also different. For reference, here is the processor power plug, from the same website:

pgh_pa_guy_2.jpg
New motherboard specs call for the separate processor power connector for the same reason the extra pins were added to the power supply connector: to handle the high currents needed by increasingly faster CPUs.

When the motherboard has these connectors, you need to use them all to get everything working. Hope this helps. Thanks to smspowersupply.com for the diagrams, and thank you for using Fixya.

moz-screenshot-1.png

Nov 19, 2010 | Computers & Internet

1 Answer

CPU overvolted and burn using 8pin eps12v cable on crosshair


no i dnt think so some time due to manufacturing defects this happens the new one wont burn unless and untill u over volt it.

Jan 31, 2010 | ASUS CROSSHAIR Motherboard

5 Answers

HP 5470c - No power


I've done it, using an adjustable power supply all i needed was 12VDC - 2Amp, the power connector going to the scanner is a 4 pin mini-DIN male, so i've ripped of the cable from the original bad power module, cable has inside 2 wires one black one white and a shielding. Black and schielding are connected together and are going to the minus, the white one is going to +12V

guess what? .... my scanner is working again

Nov 25, 2007 | HP Scanjet 5470c Flatbed Scanner

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