Cm extreme power pro 460w

[Omar_77]

Hey users...
I got dis cm extreme power pro 460w fr my pc bt i dnt kno if i have 2 fit all of the 20 +4 pins to the motherboard coz my previous psu had only 20 pins...i have intel dg33fb mobo...its urgent,plz

 

[shovenose]

well, if the mobo has 24pins, you need the 20+4 or 24-pin connector there. also, dont forget the 4/8pin cpu power connecter!

 

[FALC0N]

The extra 4 pins on the 24 pin power are to power the pci express slot.

So if your using integrated graphics and not a card, you can just plug in the 20 pins and leave the extra 4 empty.

Back during the transition to PCI express, some OEM's would use old stock 20 pin PSU's in 24 pin boards on systems with integrated graphics. Users who later added discrete graphics cards couldn't get them to work and blamed the new card.

The extra 4 pins on the EPS 12v are not needed at all.

 

[jsc]

The extra 4 pins on the EPS 12v are not needed at all.

Kind of true, under some circumstances, but for different reasons.

The reason is because the really power hungry parts, the CPU and GPU, now have their own 12 volt power.

Circumstances depend a lot on the choice of motherboard. A low spec board like a Gigabyte G41 board will not need the extra 4 pins. I ran a G'byte G41M-ES2L for about two years from an old 20 pin Antec PSU.

I would never consider doing that with any X58 motherboard.

 

[JohnnyLucky]

+1 what jsc said.

 

[FALC0N]

Kind of true, under some circumstances, but for different reasons.

The reason is because the really power hungry parts, the CPU and GPU, now have their own 12 volt power.

Circumstances depend a lot on the choice of motherboard. A low spec board like a Gigabyte G41 board will not need the extra 4 pins. I ran a G'byte G41M-ES2L for about two years from an old 20 pin Antec PSU.

I would never consider doing that with any X58 motherboard.

Uh...I wasn't guessing. These things are outlined in the ATX spec.

The EPS12v does not power the GPU. 4 pin ATX or 8 pin EPS, it goes to the cpu voltage regulators. And the extra 4 pins are usefull, but unnecessary.

You could plug a 4 pin 12v into an X58 if you chose to. The PSU would matter much more than the number of pins.

The 20 base bins are exactly the same on the 20 pin and 24 pin board connector. The extra 4 pins are to power PCI express.

 

[jsc]

Uh...I wasn't guessing. These things are outlined in the ATX spec.

True. But they have nothing to do with PCIe.

The EPS12v does not power the GPU.

True. The 12 volt PCIe plugs do. Like I said above, CPU and the more powerful GPU's have their own dedicated 12 volt power.

4 pin ATX or 8 pin EPS, it goes to the cpu voltage regulators. And the extra 4 pins are usefull, but unnecessary.

Not exactly. For instance, my Gigabyte and eVGA manuals recommend using an 8 pin CPU power cable if you have a CPU with higher than a 120 watt TDP. My OC'd Q6600 (90 watt TDP), based on actual measurements, pulls 9.5 amps through the motherboard power regulator. That is over the recommended current for the two No. 18 gauge wires (standard PSU wiring) in a 2X2 CPU power plug.

You could plug a 4 pin 12v into an X58 if you chose to. The PSU would matter much more than the number of pins.

Yes, you could. I wouldn't. An appropriately sized, high quality PSU will have the necessary cabling.

And those aren't the 4 pins I was talking about. I was talking about the 4 pins on the main power connector.

The 20 base bins are exactly the same on the 20 pin and 24 pin board connector.

Agreed.

The extra 4 pins are to power PCI express.

No, they are not. For one thing, show me where PCIe requires a 3.3 volt line. That's the orange wire.

This says the 2X12 connector was needed for PCI Express:
http://www.endpcnoise.com/cgi-bin/e/faqpsus.html
I think that this is what you are basing your opinion on. The FAQ is wrong.

Wikipedia is more accurate:
http://en.wikipedia.org/wiki/ATX
Look down toward the bottom where wikiP describes the history of the ATX standards. The 24 pin power plug was introduced in Feb. 2003. The 6 pin PCIe (or PCI Express) plugs were introduced 2 years later in March 2005.

 

[FALC0N]

Not exactly. For instance, my Gigabyte and eVGA manuals recommend using an 8 pin CPU power cable if you have a CPU with higher than a 120 watt TDP. My OC'd Q6600 (90 watt TDP), based on actual measurements, pulls 9.5 amps through the motherboard power regulator. That is over the recommended current for the two No. 18 gauge wires (standard PSU wiring) in a 2X2 CPU power plug.


Yes, you could. I wouldn't. An appropriately sized, high quality PSU will have the necessary cabling.

The 8 pin is clearly the better choice in a high draw environment. But there are a fair number of units out there still drawing upwards of 300 watts off a 4 pin.

They are able to handle anything available today at stock speeds. I'm inclined to agree with you two on the OC side of things though. People seem to do it without incident, but I wouldn't feel comfortable doing anything more than a mild OC with 4 pins.

In the OP's case though, that coolermaster 460 will likely be an issue long before the 4 pin does.

True. But they have nothing to do with PCIe..............................

This says the 2X12 connector was needed for PCI Express:
http://www.endpcnoise.com/cgi-bin/e/faqpsus.html
I think that this is what you are basing your opinion on. The FAQ is wrong.

Wikipedia is more accurate:
http://en.wikipedia.org/wiki/ATX
Look down toward the bottom where wikiP describes the history of the ATX standards. The 24 pin power plug was introduced in Feb. 2003. The 6 pin PCIe (or PCI Express) plugs were introduced 2 years later in March 2005

This is a direct quote from the ATX specification, version 2.2:

Section 4.1—Main Power Connector changed from 20 pin to 24 pin to support PCI-Express* requirements.

Thats my source. I encountered it troubleshooting a unit like the one I described. An OEM machine with a 20 PSU in a 24 pin MB from the factory. Discrete GPU would not work in it without a 24 pin PSU or 20 to 24 adapter. I encountered others with similar problem. I was told by an engineer that these 4 pins powered the PCI express stuff. Which led me to check the ATX specification.

Its held up so far. If you know something I don't, I am open to it.

 

[FALC0N]

Not exactly. For instance, my Gigabyte and eVGA manuals recommend using an 8 pin CPU power cable if you have a CPU with higher than a 120 watt TDP. My OC'd Q6600 (90 watt TDP), based on actual measurements, pulls 9.5 amps through the motherboard power regulator......

I was curious about the Speed and voltage settings on this particular setup, if you don't mind sharing.