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Precision 690 Fan noise
My 690 has never been the quietest of machines, particularly under load, but since upgrading the graphics card from a Quadro 4500 to a 4600, the fan noise has considerably worsened.
Using Everest 4.0, I can see that the System fan, which starts around 1300rpm, goes as high as 3000rpm sometimes, and typically is around 2300rpm - some 500rpm higher than before the upgrade. The Chassis fan is 225rpm, the CPU 230rpm and the PSU is 1443rpm. Interesting, the System fan seems to track the PSU fan. Now the temperatures, according to EVEREST, have not changed, and if anything are not warm. The fan increases speed without ANY change in temperatures at all.
Is the System fan actually temperature controlled, or does it just follow load on the PSU? That would make sense as the 4600 has a much higher power load than the 4500 card.
Full spec is:-
Dell Precision 690, 2x5355 quad xeons, 1KW, 8gb 667 ram with riser, 4x137gb Hitachi SAS 15k drives in the top 4 caddies connected to an Adaptec 48300 SAS card in a Raid-10 configuration. DVD-RW, floppy, 2x80gb WD Raptor 10k SATA drives connected to internal SAS controller in Raid-0 configuration. Creative Xi-Fi Platinum sound card, Nvidia Quadro 4600 gfx card. The 4 SAS drives are hot, and are right by the PSU, so possibly this is heating up the PSU more, and the System fan is following in sympathy?
Anyone got any clues? The noise is quite distracting!
Interestingly, the 490 I have does not exhibit these problems and is near silent, since I modified the memory fan by chopping the blades. Spec of the 490 is:-
Dell Precision 490, 8gb 533 ram, 2 x 5150 dual Xeons, 4 x 160gb WD Raptor 10k SATA drives, DVD-R, NVidia Quadro 4600 gfx card.
The 690 is not hot, even opening up the machine while running - no heat other than some from the psu area.
Any help greatly appreciated!
asalcedo
39 Posts
0
May 13th, 2007 13:00
Initially the order confirm read:
160 GB SATA Hard Drive DataBurst(10K RPM)
Do you know which disks these are exactly, I want to buy two more (outside Dell) and configure them in Raid 0.
If you could point me to a website, even better.
I have looked at the Western Digital website, but the Raptors 10k are 150GB not 160GB.
Many thanks,
Antonio
Trumanek
10 Posts
0
October 9th, 2010 03:00
what heatsinks and fans are using all that dead quiet ones?
My 690 is louder then my vacum sometimes.
Im looking for some heatsinks and fans for dual quad xeons 5335 cpus
Whatisthewallpl
1 Message
0
January 3rd, 2013 22:00
Hum Dinger - Dell Precision 690 - Fans used to run quietly, but now are running at full bore - and the noise is unbearable...
Answer:
There are 2 parts to this issue - you should *not* have to rewire or replace any fans - that would certainly, literally change bios' safety detection that protects the processor from overheating. I encountered this problem, and I now have quiet running fans that are controlled by the bios. The fix is considered to be customer-capable - simple in procedure: Steps:
1a) Replace the *wafer* looking battery on the motherboard with an exact voltage and size match - sold at most big-box computer stores or computer-specific stores. hint: take the old battery with you and match it up - don't pay more than $12.00 for it.
1b) After installing the new battery in the same manner as the old - the positive side of the battery (biggest of 2 sides) stays upward (you should see the "+" character after you install the battery. Let the computer run for 2 hours so that the wafer battery can charge.
2) Go into the system bios (F2 key press) when the first power-on splash screen comes on. In the bios, use the down arrow to the "Security" section. A sub-heading will be called "Intrusion Detection ..." <-- Hit enter on this selection, and then set it to off. Reboot, and then your system should have quiet fans afterward.
Every time you take the side off the computer - there is a spring loaded switch with red and black wires that triggers the bios to tell the owner that somebody opened the box. This switch can be disabled - it's attached to the motherboard like a jumper - this prevents the intrusion detection sensor. I disconnected the switch. Intrusion detection will cause the system fans to go full throttle on every boot-up.
BEST PRACTICE FOR SUSTAINING COMPUTER FOR MONTHS TO YEARS BEYOND AVERAGE 4 - YEAR SPAN: (talk to a professional first if a laptop)
1. Refrain from overclocking - excessive heat generated puts undue stress on the silicone pathways that comprise your CPU, GPU, chipset, etc. Incorrrect voltage or heat stress can burn out your processor, memory, etc.
2. Blow out your computer with compressed air (or leaf blower, shop vac, hair dryer on cool setting, air compressor) every 4 months or so. Blow (NOT SUCK) air *against* the direction of natural air flow. Blow out the power supply, Heat block/grid over the CPU - graphics card fan, and any surfaces.
3. Once a year or every other, have a tech person apply new thermal paste between the processor and heat block. Especially if you run your computer under heavy load (CPU intensive tasks such as gaming, CAD, Video Edit, etc). If your CPU runs at full capacity most of the time - The heat generated can dry out the thermal paste, and then the heat is not pulled off the CPU and into the Metal grid with fan over the processor. The bios will "step down" the computer processing speed to reduce heat build up.