I found out why some Ultra-120 Extremes are loose [PIC]

[Prof_Chaos]

If it's tight and your temps are good I wouldn't worry at all what bracket you used.

It seems to be tight..but my temps are near to 57 c when its full load under orthos and room temperature 28c

I have a c2d 6400@3.00 1.375v
Are these normal temps with 1.375 voltage?

[fRzzy]

I think that's normal...

[Jodiuh]

It seems to be tight..but my temps are near to 57 c when its full load under orthos and room temperature 28c

I have a c2d 6400@3.00 1.375v
Are these normal temps with 1.375 voltage?

That's great bro. My 6400's@3.20 1.325v and it loads @ 47C orthos large in 25C ambient w/ the 1200RPM SFLEX. I'm pretty sure if my v was bumped a touch more and the room scorching like yours, I'd be pretty close to 60C too.

[strange|ife]

good find njkid
i will have to go check tonite, gonna be remounting anyway. iam postive it didnt have that washer when i installed it a while bak.

Prolly just do the penny mod, to lazy to go to hardware store for a single rubber washer.

[eva2000]

I received my Ultra 120 extreme today no silicon washer but i don't have any wiggle room or movement of my heatsink as mentioned in this thread.

So maybe Thermalright revised and shortened the height of the mounting bracket for LGA775 ? It was pretty hard to mount as is for me - very tight without movement.

Installed on Asus Blitz Formula.

[Jodiuh]

That's really good to hear eva. Nice to know some of us won't suffer.

I wonder if I'd stand a chance w/ RMA since my base has been lapped. I doubt it, but even after lapping my pipes don't get hot...barely warm. And the temps have never really been all that great.

[LuckyNV]

I received my Ultra 120 extreme today no silicon washer but i don't have any wiggle room or movement of my heatsink as mentioned in this thread.

So maybe Thermalright revised and shortened the height of the mounting bracket for LGA775 ? It was pretty hard to mount as is for me - very tight without movement.

very interesting, I got my TRUE very early, came without a washer but it was crazy loose with the screws all the way in. It would twist 45 degrees with little resistance if I tried to switch fans whilst heatsink installed.

I recently used the mouse mat mod (those freebie plastic coated foam mats) cut up 40x50mm ~5mm thick piece for extra pressure, almost twist proof and a few degrees cooler.

Unless my eyes are playing tricks but your screws look shorter? Must remember take a look at my own ones next time I'm in my case.

Congrats on getting a TRUE with a good mount though

[ChaosMinionX]

Unless my eyes are playing tricks but your screws look shorter? Must remember take a look at my own ones next time I'm in my case.

He may of used the 939 screws that were included with it, which could explain some of it

[eva2000]

I used the longest screws included in the kit as the instruction sheet depicts the LGA775 screws as being longer > http://i4memory.com/reviewimages/coo...me_mx2_05.html

[Andrew LB]

Well.... i think it's time to rebuild my rig and install my TRUE. Since my heatsink just arrived today from Newegg, i'm hoping it's the updated version. It didn't come with any extra washer. The only washer is the little one on the X bracket which is under the screw in the center.

Here:

[Andrew LB]

Well guys.... i just installed the cooler and it fits rock solid. But.... i may lap my CPU and TRUE eventually.... and due to that i may have to add a shim.

[zlojack]

Mine is definitely loose. I put a thin washer on it, and it still rotates fairly freely. I've lapped my CPU and the TRUE and I saw some drop in temperature (about 3 degrees) but still running at 46-48 on standard clocks.

I ran a stress test on OCCT yesterday and it was getting up to 70-71.

I am going to try a thicker washer and see if it tightens up at all...

[LuckyNV]

do what I did, get one of those cheap plastic coated foam mouse mats, just cut up a piece, 40x50mm size I think and use that, its awesome

[zlojack]

I'll give that a shot!

How about this little tidbit from Thermalright's page FAQ:
http://www.thermalright.com/support_default.htm

I purchased an Ultra-120 eXtreme and I have a Socket 775 motherboard. I’ve bolted down the screws to their tightest and yet the heatsink can still be moved. Why is that? Will that affect the performance of the heatsink?


The Ultra-120 eXtreme works with the new version retention mechanism not having the heatsink-secured-in-place feature but rest assured that it is still well within Intel’s recommended pressure and does not affect performance at all.

According to them it doesn't make affect performance! I find that a little hard to believe...

[Origin_Unknown]

Well guys.... i just installed the cooler and it fits rock solid. But.... i may lap my CPU and TRUE eventually.... and due to that i may have to add a shim.

i've done that and done require a shim :p

[zlojack]

do what I did, get one of those cheap plastic coated foam mouse mats, just cut up a piece, 40x50mm size I think and use that, its awesome

I ended up using a Loonie (Canadian dollar coin)

Worked perfectly and the heatsink doesn't move at all... I noticed about 1-2 degrees drop in temps too!