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Prescott temps.

mmynett

Weaksauce
Joined
Apr 20, 2005
Messages
114
Just installed an XP-90 heatsink with Zalman 92x92mm Fan.. this is on ABIT AA8XE, 3.2gig p4 OC'd to 3.82gig with a 460W Akasa UQuiet PSU Blu/Fan. Have also got an 80mm intake fan at the front of the case & a rear exhaust fan, plus all cables are tied & out of the way of the main components. My cpu temps are 35c idle & 60c under load. Is that running a little hot for a prescott? Wanted to get the load temp to around 50c, anything else i can try?
 
thats fine for a prescott trust me. I have the system in sig in a thermaltake xaser v case with 6 case fans and an added 3000rpm 120mm fan at the front and I top out at 63C. My prescott will implement thermal throttling at around 70-72C if i clock it higher and really push it.
 
That sounds pretty awesome temp especially when you OCed your CPU, mine one is 44 idle and 60's on load because i am using stock cooler and at stocked speed.
 
I just installed an XP-90 and not sure if I did it correctly.

I've got an LGA775 Prescott 3.4 chip, not OC'd. Idle temps with the stock Intel cooler were around 51-52. Under load it's about 65. This is with an ambient around 75 degrees F.

I followed the instructions on Thermalright's website, using Arctic Silver Ceramique. First I cleaned off the sink and top of the CPU with 99% alcohol. Then I put a small glob of AS on the sink, spread it around with my finger in a plastic ziplock bag, and then cleaned it off with a paper coffee filter. It left a discoloration, as noted on the website.

I then squirted a small dab into the middle of the CPU and pressed down. I then turned it left to right a couple times, and then had to tilt it back to engage the hooks into the LGA775/478 adaptor. Then I pressed the other side down and engaged the other hooks.

I'm using a Panaflow 92mm High speed (57 CFM) fan blowing down on the sink.

After reassembling all the wires and such, I power it on and check the BIOS, since that usually shows load temps (since there's no throttling in the BIOS). It seemed to peak about 50 degrees F.

When it loads Windows XP, the Ai Booster (ASUS P5AD2) shows idle temps around 44. Load temps seem to hit 58.

I keep seeing people with the XP-90 having idle temps of 34c and an wondering if I'm doing something wrong.

I do realize that it's just been installed and hasn't gone through the curing period, but does the curing period bring temps down that much? Or is this acceptable for the 3.4 LGA775 Prescott with the XP-90?
 
I read on the Thermalright website that if you have an Asus with the stack cooling you will need slightly longer screws to make good contact.
 
The LGA775 adaptor they're shipping right now has the longer screws to take care of the Stack Cool situation.

Any other HSF I've ever installed I always ran a credit card or other thin sturdy card to even out the layers on both the heat sink and the CPU. But Arctic Silver's instructions for application on the CPU are pretty much squirt a dot about the size a little bigger than a piece of rice and then squish it down with the HSF.

I'm not sure if this was a good idea or not.

However, it's been cloudy the last few days and the ambient temperature has fallen. A couple months ago with these same ambient temps outside, I'd be getting near 50c idle and 65c load. Today I got about 37c idle and 45c load. So I guess the XP-90 really has lowered things a bit.

I may still yank it off there and put a thin layer on the prescott, though. It bugs me that there may be potential air pockets or improper pressure being applied evenly across the CPU to force down that glob of AS Ceramique into a thin film.
 
It could be the ihs on the p4. The one I have is very concave and if I don't put enough as5, my xp120 and p4 make contact on the edges only. Yes, I've ordered the lapping kit :rolleyes: I'm currently running ambient room temp of about 23 with the following...

630@3900 stock vcore
right now: 42
prime 95 large in place/rthdribl video: 60

rig specs in sig...
 
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