[SOLVED] Dell Dimension 4700 running HOT, installing a 3rd fan

pammy_broke_it · 05-04-2007, 08:12 PM

I have a Dell Dimension 4700

MB-Dell Inc. OM3918 Serial Number CN70821553600DR Bus Clock 800meg BIOS Dell Inc. 6-10-2004

Power supply Norwood Micro
Model # ISO-P350S
6.3Amp???

Pentium 4 2.80Ghz
16k primary m,emory cache
1024 secindary memory cache

Memory 2-256 mb cards
manufacturer- ??

This machine runs extremely hot. I want to install a third fan inside. It has the power supply fan and a case fan but not a specific CPU fan. It uses a back mounted case fan and chute to cool the processor. This isn't enough. I have the side off and a smal desktop fan blowing inside to coll it right now. It has plenty of clearance for air flow.
When I had the power supply replaced the temps were running in excess of 105degrees F. The technician warned me about possibly adding another fan or a cooling system.
I have the fan but the power connection has me stumped. I have 2 open 3 pin pads on the MB that the fan will hook into,but untill I know they work I won't do it. I have hunted specs on the MB but can't find them. Any help would be appreciated.

sidech · 05-04-2007, 09:59 PM

here's your service manual http://support.dell.com/support/edoc..._documentation

**speedster123** · 05-06-2007, 07:09 AM

See if with a magnifing glass you can see "fan" by the pins on the mainboard, if so, its good to go.
What supply was installed? Download http://www.softpedia.com/progDownloa...load-4103.html

Fleetwood · 10-04-2009, 07:51 PM

I am having the same problem. I bought a fan to put on the side of the case. But I am not sure about were to plug the thing in at. There are two 4-pin connectors on the motherboard, one is a (J9D1) that is a "Telephony Connector", the second is (J9B1) that is a CD Audio Connector. Can i use any of these or is there a nother 4-pin on the motherboard that is for a fan. >>please help if anyone can<<
My specs are:
Pent.4- 3.20
Ram-2.50GB
hard drive- 160GB
Graphics- 9500gt PCI wht/1GB
Its been a great system so far after the upgrades ( RAM and Graphics card) any help would be great. I can not afford a new system and need to keep this thing running as long as possible. Thank you

**Tyree** · 10-05-2009, 08:16 AM

@ pammy_broke_it
The rear fan/chute setup should cool the PC sufficiently if the CPU heatsink and the rear cooling fan/chute area free of dust buildup?
Check your temps & Voltages in the Bios.

**Tyree** · 10-05-2009, 08:19 AM

@ Fleetwood
Stsrting your own post would have been a better choice.
You say that you have upgraded your Graphics card. Most likely your are straining the stock Dell PSU and that is causing your temp issues.
Please post the Brand & Wattage printed on the PSU label.

Fleetwood · 10-05-2009, 09:51 AM

The PSU is a FSP,
model #:AX450-PN
AC Input:110-12-/220-240V-,8.5/5A,60/50Hz
DC Output:400w-Max 450w
The fan i bought and want to put on the case is http://www.newegg.com/Product/Produc...82E16835129234
but like I posted I am not sure if either of the two 4-pin connectors can run it or if the PSU can handle it. The graphics card I have is
http://www.newegg.com/Product/Produc...gt%201gb%20bmg
Thank you for your time in this matter.

**Tyree** · 10-05-2009, 02:19 PM

@ Fleetwood
The extra cooling fan is not going to put any excessive load on your PSU. That PSU is cutting it close with a 9500GT GPU though.
Personally, I would get at least a 550W Seasonic or Corsair PSU.

Fleetwood · 10-05-2009, 04:43 PM

So I should be able to use one of the two 4-pin connectors at the bottom of the mother board without any problems, atleast until i can get a bigger PSU. Right?

**Tyree** · 10-05-2009, 05:09 PM

You can use a Mobo connection but it is preferable to power fans from the PSU.

Fleetwood · 10-06-2009, 07:08 AM

roger that.!!
Thank you for your time and helping me in this matter...

Fleetwood · 10-15-2009, 05:20 AM

update: there was a connection lead from the power supply that I could use. This old dell has never run better or look as good doing it. Dr. Frankenstein would be proud.:)

05-04-2007, 08:12 PM	#1 (permalink)
pammy_broke_it Registered User Join Date: Oct 2006 Location: Georgia Posts: 24 OS: Windows xp sp2	[SOLVED] Dell Dimension 4700 running HOT, installing a 3rd fan I have a Dell Dimension 4700 MB-Dell Inc. OM3918 Serial Number CN70821553600DR Bus Clock 800meg BIOS Dell Inc. 6-10-2004 Power supply Norwood Micro Model # ISO-P350S 6.3Amp??? Pentium 4 2.80Ghz 16k primary m,emory cache 1024 secindary memory cache Memory 2-256 mb cards manufacturer- ?? This machine runs extremely hot. I want to install a third fan inside. It has the power supply fan and a case fan but not a specific CPU fan. It uses a back mounted case fan and chute to cool the processor. This isn't enough. I have the side off and a smal desktop fan blowing inside to coll it right now. It has plenty of clearance for air flow. When I had the power supply replaced the temps were running in excess of 105degrees F. The technician warned me about possibly adding another fan or a cooling system. I have the fan but the power connection has me stumped. I have 2 open 3 pin pads on the MB that the fan will hook into,but untill I know they work I won't do it. I have hunted specs on the MB but can't find them. Any help would be appreciated.

05-04-2007, 09:59 PM	#2 (permalink)
sidech Registered User Join Date: Apr 2007 Location: PA Posts: 14 OS: XP PRO	Re: Dell Dimension 4700 running HOT, installing a 3rd fan here's your service manual http://support.dell.com/support/edoc..._documentation

05-06-2007, 07:09 AM	#3 (permalink)
speedster123 Mentor Join Date: Oct 2006 Location: United States-New York-Long Island Posts: 5,223 OS: xp pro SP3	Re: Dell Dimension 4700 running HOT, installing a 3rd fan See if with a magnifing glass you can see "fan" by the pins on the mainboard, if so, its good to go. What supply was installed? Download http://www.softpedia.com/progDownloa...load-4103.html __________________

10-04-2009, 07:51 PM	#4 (permalink)
Fleetwood Registered User Join Date: Oct 2009 Posts: 5 OS: XP pro	Re: Dell Dimension 4700 running HOT, installing a 3rd fan I am having the same problem. I bought a fan to put on the side of the case. But I am not sure about were to plug the thing in at. There are two 4-pin connectors on the motherboard, one is a (J9D1) that is a "Telephony Connector", the second is (J9B1) that is a CD Audio Connector. Can i use any of these or is there a nother 4-pin on the motherboard that is for a fan. >>please help if anyone can<< My specs are: Pent.4- 3.20 Ram-2.50GB hard drive- 160GB Graphics- 9500gt PCI wht/1GB Its been a great system so far after the upgrades ( RAM and Graphics card) any help would be great. I can not afford a new system and need to keep this thing running as long as possible. Thank you

10-05-2009, 08:16 AM	#5 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,686 OS: XP Pro-7RC-Mandriva My System	Re: Dell Dimension 4700 running HOT, installing a 3rd fan @ pammy_broke_it The rear fan/chute setup should cool the PC sufficiently if the CPU heatsink and the rear cooling fan/chute area free of dust buildup? Check your temps & Voltages in the Bios. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

10-05-2009, 08:19 AM	#6 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,686 OS: XP Pro-7RC-Mandriva My System	Re: Dell Dimension 4700 running HOT, installing a 3rd fan @ Fleetwood Stsrting your own post would have been a better choice. You say that you have upgraded your Graphics card. Most likely your are straining the stock Dell PSU and that is causing your temp issues. Please post the Brand & Wattage printed on the PSU label. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

10-05-2009, 09:51 AM	#7 (permalink)
Fleetwood Registered User Join Date: Oct 2009 Posts: 5 OS: XP pro	Re: Dell Dimension 4700 running HOT, installing a 3rd fan The PSU is a FSP, model #:AX450-PN AC Input:110-12-/220-240V-,8.5/5A,60/50Hz DC Output:400w-Max 450w The fan i bought and want to put on the case is http://www.newegg.com/Product/Produc...82E16835129234 but like I posted I am not sure if either of the two 4-pin connectors can run it or if the PSU can handle it. The graphics card I have is http://www.newegg.com/Product/Produc...gt%201gb%20bmg Thank you for your time in this matter. Last edited by Fleetwood; 10-05-2009 at 09:56 AM.

10-05-2009, 02:19 PM	#8 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,686 OS: XP Pro-7RC-Mandriva My System	Re: Dell Dimension 4700 running HOT, installing a 3rd fan @ Fleetwood The extra cooling fan is not going to put any excessive load on your PSU. That PSU is cutting it close with a 9500GT GPU though. Personally, I would get at least a 550W Seasonic or Corsair PSU. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

10-05-2009, 04:43 PM	#9 (permalink)
Fleetwood Registered User Join Date: Oct 2009 Posts: 5 OS: XP pro	Re: Dell Dimension 4700 running HOT, installing a 3rd fan So I should be able to use one of the two 4-pin connectors at the bottom of the mother board without any problems, atleast until i can get a bigger PSU. Right?

10-05-2009, 05:09 PM	#10 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,686 OS: XP Pro-7RC-Mandriva My System	Re: Dell Dimension 4700 running HOT, installing a 3rd fan You can use a Mobo connection but it is preferable to power fans from the PSU. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

10-06-2009, 07:08 AM	#11 (permalink)
Fleetwood Registered User Join Date: Oct 2009 Posts: 5 OS: XP pro	Re: Dell Dimension 4700 running HOT, installing a 3rd fan roger that.!! Thank you for your time and helping me in this matter...

10-15-2009, 05:20 AM	#12 (permalink)
Fleetwood Registered User Join Date: Oct 2009 Posts: 5 OS: XP pro	Re: Dell Dimension 4700 running HOT, installing a 3rd fan update: there was a connection lead from the power supply that I could use. This old dell has never run better or look as good doing it. Dr. Frankenstein would be proud.:)