IHS removal with XP-90

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08-12-2005, 05:31 PM
[XC] 4X4N

IHS removal with XP-90

Before doing this, I didn't see many XP-90 users with the ihs off, so I thought I'd share my results. This was actually very easy to do. Took of ihs with old style thin razor. About 15 min. to do this. I put a few scratches on the corner when prying it off, but no harm done.
http://home.comcast.net/~majutsu/3500.jpg

Next, I used a dremel to cut down the spacers on the bottom of the XP-90 base. 10 min. to do this.
http://home.comcast.net/~majutsu/xp-90base.jpg

Then re-installing. It's easier to install the heatsink with the ram removed. Attach the clips on the side with the ram first. When connecting the other side of the clips, pull up on the heatsink so there isn't a lot of pressure on the core. I had one small problem with this. There are 2 caps right next to base, and now with the heatsink closer to the board, the clip hits them when trying to install. I carefully bent them back just a little to get it by. Here is a pic of it.
http://home.comcast.net/~majutsu/springclip.jpg

After all is done, temps are down, but not as much as I was hoping. Idle was at 36-38C, now 33-35C. Load temp is better. 53-55C before, just ran over 9 hours of prime, and never reached 50C. So, I think it was well worth my 1/2 hour of time.
08-12-2005, 05:35 PM
IvanAndreevich

Friend has also done it. How much did you gain in terms of o/c?

Just be CAREFUL now. Do not lift the motherboard out of the case by the heatsink - you will crush the core.
08-12-2005, 05:50 PM
[XC] 4X4N

Good point, I'll remember that. As far as overclock, haven't tried to go higher yet. I've been stable for while at 11x250, but last night I got a blue screen. Flashed to the bigtoe bios today, and just ran prime all day. This board sometimes has a mind of it's own. My max benchable was at 11x265. Later tonight I'll try for higher.
08-12-2005, 06:41 PM
DrJay

I tried this. Is it just me. or is the IHS way harder to remove than with Newcastle / Clawhammer cpus?
08-12-2005, 08:22 PM
nOx34

For me ,removing the IHS was followed by a great short period of better OCability and then it all went downhill from there for no apparent reason :(
08-12-2005, 08:30 PM
[XC] DragonOrta

I just took the IHS off of both my venice 3200 and my fx-53. The venice core is so much smaller than the fx. it looks to be almost half as big.
08-12-2005, 10:06 PM
largon

Quote:

Originally Posted by DragonOrta

I just took the IHS off of both my venice 3200 and my fx-53. The venice core is so much smaller than the fx. it looks to be almost half as big.

Winchester's/Venice's core is only 43.523316062176165803108808290155 percent of the area of Sledgehammer core. So Venice is less than half of FX-53. :)

How good contact the HS has on FX-5xs? My CBBID Winchester's HS's grey goo seemed to be a thermal insulator.
08-12-2005, 11:24 PM
DrJay

On a couple Newcastles and a clawhammer the IHSs came off very easily for me.
Never tried a Winchester. It seemed to be very hard to slice through the rubber stuff on two Venices now.....are most people using acetone to soften it up?
I had to use so much force with the razor blade that I bent many pins and was constantly worried I was going to slip and slice my finger open.
08-13-2005, 06:04 AM
[XC] 4X4N

I didn't use anything, the razor went right through pretty easy. I held the cpu with some of the foam pads that they come with. The pins sink right into the foam and hold it. I also wrapped duct tape around the blade so I could only go so far in, and this made it easier to hold onto while cutting.

Edit: So far no help with overclock. Haven't tried for a max shot yet, just trying to find the highest prime stable setting. 11x250 failed prime after 5 1/2 hours.
08-13-2005, 06:47 AM
Lidocaine

Thanx for the info, I've been debating on doing this and I do have an XP-90. I was going to do it just last week with my 3500+ Claw, but I got a new 4000+ SanDiego and it runs WAY cooler than all my claws and newcastles ever did.

34C at 2.8Ghz at 1.66VCore.......not too shabby, but I'll keep following this thread to see how much further you gain on an overclock and what volts it takes to get there. ;) .

Once again, thanx for the info and pics, much appreciated.
08-13-2005, 09:11 AM
[XC] 4X4N

Update:
Well it looks like I've might have 11x255@1.67v stable. Ran prime for about 45min, but stopped it because temp was getting up to 54-55C. I have just a low speed fan on it. I'm going to get a higher speed fan and see if I can't keep the temps down. Then I'll run it longer and see if it really is stable. I was able to get a super-pi 1m pass at 11x268, but crashed in 3dmark, so I don't think I am goimg to see much gain on my max benchable.
08-13-2005, 09:19 AM
Jasonxxx

1 Attachment(s)

Here is a pic of how I remounted the XPC-90 after removing the IHS, this is with a 4000+ Claw.... I gained about ~75mhz stablility in my overclock. As far as with claw's this is about average.
08-13-2005, 09:28 AM
DrJay

Quote:

Originally Posted by Jasonxxx

Here is a pic of how I remounted the XPC-90 after removing the IHS, this is with a 4000+ Claw.... I gained about ~75mhz stablility in my overclock. As far as with claw's this is about average.

Very cool! :toast:
08-13-2005, 09:52 AM
[XC] 4X4N

I like that idea also :thumbsup: I think I might have to look into doing this myself.
08-13-2005, 05:18 PM
ZoKi

thanx for the little guide 4X4N. Now i know what base thingy i have to cut down now :D
08-14-2005, 01:11 AM
ImportantAwareness89

Does this strategy work on an XP-120 also?
08-14-2005, 01:47 AM
Giana

Anyone knows what those little ICs under the IHS are used for?
08-14-2005, 03:25 AM
BeSaiD

one question: if you want to put on the IHS again, what do you need?

It has to be fixed again with "glue" (or epoxi or so) or only AS5?
08-17-2005, 02:29 PM
ImportantAwareness89

I always wondered. How do you apply AS5 now? Spread it manually? Treat it like an Athlon XP/Barton?
08-17-2005, 08:22 PM
[XC] 4X4N

BeSaid: From what I have read, and this is what I'll do if i put mine back on, is to use as5 on the core and some silicon sealant on the corner of the ihs. Then put the heatsink on.

dmo580: Yes, I just put a small bead on the core, like with the xp's. I test mounted it first, and the contact was perfect.
10-06-2005, 04:03 PM
rdgrimes

I thought I would check in and report my success. San Diego 3700 - CAGBE 0526 and XP-90C.

The razor blade prooved to be the best tool. The goop under the IHS was pretty dry and caked, it looked like some kind of aluminum goop. It did appear to have good contact.

Anyway, I saw an immediate drop in idle temp of 4'C and Prime95 temp drop of a whopping 8-9'C. In short, my Prime95 temp is now close to my prior idle temp, and this is with fresh AS-5 compared to cured AS-5. I'm a happy guy. Prime95 only raises my temp about 6-7'C.
10-06-2005, 06:51 PM
Repoman

Meh, just did it today.. I used one of those things that you use to scrape paint off, tryed regular razor blade and xacto knife and both were too thick.

I didn't really gain anything.. I think it's because I bought a worse HS because I didn't realize I could have used my XP-90. I bought SLK-948U and temps end up being like 2-3C better than with the IHS on/XP-90. Maybe I'll get a big typhoon if I can find it for cheap..
10-07-2005, 06:27 AM
PORTUGAL

please,someone knows if sandiego 4000+ core without ihs is more fragile compared to the old athlonxp?
10-07-2005, 09:13 AM
Repoman

Don't know about that as I've never owned an AXP. But these cores on A64 seem pretty tough (I have X2 3800). I tightened my SLK-948U heatsink down all the way and no problems :)
10-07-2005, 09:40 AM
jsriolo

From what I can see the mounting is very similar to the xp-120, but had anyone tried it? As soon as I get my Opteron I might sacrifice my venice to try it if no one else does....
10-07-2005, 12:05 PM
rdgrimes

The main issue with the XP coolers is the clamping force and the possibility cracking the core due to uneven/excessive force. You have to be carefull to hold the HS level while clamping all 4 clips so you put even pressure all around.
To limit the clamping force, I took only 2mm off the legs of the bracket instead of the 3mm or so that is lost by removing the IHS. This resulted in an adequate amount of clamping force once all 4 clips were attached. Several test mounts showed that nearly all AS-5 was being squeezed out.

Keep in mind that with the IHS on, the force is distributed evenly around the outer edges of the chip. But without the IHS, the force is directed entirely onto the core itself.
10-07-2005, 09:17 PM
PORTUGAL

ola I decided to remove ihs of mine sd4000+, with ihs again back as bigger temperatures, I think that if it must to the fact of ihs not be glue in the base,tomorow I go to take off board it are to study as I go for xp120(se to give without ihs).

http://img239.imageshack.us/my.php?i...sdefora5st.jpg
10-08-2005, 09:33 AM
PORTUGAL

now let see the results:

with ihs max prime95 stable is 2700mhz 1.475vcore temp 46ºc
with ihs removed max prime95 stable is 2750mhz 1.475vcore temp 41ºc
10-10-2005, 04:06 AM
ROcHE

I did the same to mine yesterday (3000+ Venice and XP-90).

With IHS:
1.6volts to be Prime stable at 2.6ghz, load temp 54-55 (24 ambient)

IHS removed:
1.552 volts for the same speed, 45-46 load temp (same ambient). :)
10-10-2005, 08:25 AM
Theo404

Welcome to xtremesystems!

Could you test for load temp at the same voltage? just for reference. :)

1.6V 2.6 Prime load IHS on
1.6V 2.6 Prime load IHS off
10-10-2005, 08:35 AM
Pillo-kun

I dont have a xp cooler but i think i have squished the core wiht my zalman 7700cu, but i cant see any damage.......

I took of the ihs on my 3000+ winchester and at the same time i did the 1.7vcore mod on my asrock 939dual sata2.
The cooler i used was a Zalman 7700cu... I noticed that it could move around on the naked core so i took the zalman apart and lifted up the (mounting clip) to the second level and it never danced around on the core... I booted up got into bios and saw that the temp was 48C so i thought that i had to screw it down a bit to get a better connection between cpun and the cooler... It worked, the temp got down to 44c. The vcore was 1.4+0.25=1.65 at 44c..Then i thought that maybe one turn would decrease the temp more and when i did it, the pc instantly freezed in bios... I hit the off button and tried to restart the pc but nothing happened..not even the fans showed any sign of life..

Took out the naked 3000+ cpu to inspect it but didn't see any damage at all. Maybe the mobo died on me cus of the Vmod? I sanpped of one leg of the resistor but still no life....What to do now?....hehe

stupid stupid me...........
10-10-2005, 09:55 AM
Max Tractor

Quote:

Originally Posted by 4X4N

some silicon sealant on the corner of the ihs. Then put the heatsink on.

Could you tell me what type of silicon you use?
10-10-2005, 09:57 AM
ROcHE

Quote:

Originally Posted by Theo404

Welcome to xtremesystems!

Could you test for load temp at the same voltage? just for reference. :)

1.6V 2.6 Prime load IHS on
1.6V 2.6 Prime load IHS off

Thanks for the welcome.

I did test at 1.6volts (before I tried to lower it). I had 48-50 at full load.

I'm now at 2610mhz 1.552. Seems stable for now. I'm an happy camper :cool:
10-10-2005, 10:25 AM
ixtapalapaquetl

For those concerned with damaging the core with the clip-in mechanism of the xp-90, someone at DFI-street (forgot who - sorry can't give proper credit!) had the brilliant suggestion of clipping the heat sink to the mounting bracket while the bracket was removed from the motherboard. Then the xp-90 can be attached as a whole to the motherboard by screwing it directly in. Going back and forth between the screws should ensure even pressure and therefore provide some measure of safety.
10-10-2005, 11:29 AM
Theo404

ixtapalapaquetl: Thats a really good idea, may have to have a go at that in a bit. (still working up the corage to pop the ihs off my week 17 sandiego).

ROcHE: So you dropped 5C-6C....nice little gain.
10-10-2005, 11:56 AM
ixtapalapaquetl

Removing the IHS is really not that big of a deal. I searched the web for an image of a naked chip. I then took a sharpie and marked where all the delicate bits were on top of my IHS, erring on the side of caution. This gave me a visual cue when using the razor blade. Be firm, and be patient and you'll be fine.
10-26-2005, 05:15 AM
ZoKi

Thank You Dude. Very Usefull. Appreciate It :D :D :D :D :banana: :banana:
10-26-2005, 08:09 AM
AaronATX

Did this a few months ago myself. Didnt have to grind down anything here....

Been running 2800mhz @1.65v now since then with no problems.
10-26-2005, 09:01 AM
bigjohns97

I think i am going to do this this weekend on my 4400, i have been running at stock lately.

Are you guys not using a shim or anything to keep the copper base from hitting some of the chips around the core?
10-26-2005, 09:14 AM
JaCk0

i have a slk-948, can i remove ihs with this hs? need i some bands around core?

regards
10-26-2005, 09:31 AM
Theo404

Quote:

Originally Posted by AaronATX

Did this a few months ago myself. Didnt have to grind down anything here....

Been running 2800mhz @1.65v now since then with no problems.

With an XP90? How easy is it to mount it, do you hold the hs really hard and use a screwdriver or something to get the clips on.
10-26-2005, 10:25 AM
AaronATX

Yup. Honestly it was cake. Removed my ram for more clearance, hooked one side of the clips, and once hooked, I just pulled up real hard using the hooks as the pivot point. The base of the xp-90 did not touch the core of the processor until AFTER I had the other side hooked as well. The key here is to really have a GOOD grip on the heatsink without bending up the fins.

Also, I do not have my fan mounted directly to my heatsink. I use this instead:

http://img461.imageshack.us/img461/6774/dscn07157np.jpg
10-26-2005, 12:39 PM
Garrett

Quote:

Originally Posted by bigjohns97

I think i am going to do this this weekend on my 4400, i have been running at stock lately.

Are you guys not using a shim or anything to keep the copper base from hitting some of the chips around the core?

Just use some regular thin transparent tape to cover up those resistors/chips around your core, that way you're 100% sure nothing makes unwanted contact :)
10-26-2005, 01:32 PM
rdgrimes

Quote:

Originally Posted by Garrett

Just use some regular thin transparent tape to cover up those resistors/chips around your core, that way you're 100% sure nothing makes unwanted contact :)

I used plain old black electrical tape. ;)
10-26-2005, 01:35 PM
AaronATX

Assuming you install the heatsink flat (and it isnt warped) then you really shouldnt have an issue hitting anything but the core, since it is the highest point on the chip.
10-26-2005, 04:53 PM
DeNs

Thing is the shim also ensured even contact to the core - without putting any extra pressure onto it. I wouldn't mind doing it on either of my cores (1 Watercooled, one XP120) but getting the right pressure has never been a great skill of mine.

It'd be nice if someone did come out with a shim for A64s. Despite the small market i'm sure they'd sell quite well.

---dens
10-26-2005, 05:33 PM
Welz

Quote:

Originally Posted by AaronATX

http://img461.imageshack.us/img461/6774/dscn07157np.jpg

why do you run single channell?
10-26-2005, 06:26 PM
AaronATX

Its not in single channel
10-26-2005, 06:44 PM
Welz

Quote:

Originally Posted by AaronATX

Its not in single channel

my eyes decieve me :banana:
10-26-2005, 10:57 PM
Garrett

Quote:

Originally Posted by rdgrimes

I used plain old black electrical tape. ;)

I guess any tape will do as long as it's not too thick, so the core will be the highest 'component' on the cpu pcb, which is of course the only thing that should be touching the heatsink ;)
11-07-2005, 11:42 AM
TEDY

what about IHS off and 7000B-ALCU ???
11-07-2005, 03:57 PM
ZoKi

Just done this last night. Got a 8C drop in load temps
11-07-2005, 05:52 PM
ajshin27

Anyone know how to do this with a Zalman 7700? I took the IHS off of my opty today and took off some of the resistors next to the core while doing it :eek: Thank god the cpu still works but ambient temps are still the same and load temps have gone up from 56-59 to about 60-63. I put 4 this pieces of cardboard on the corners of the cpu, but the heatsink still wobbles around a bit. Any ideas? Also, what exactly do those resistors next to the core do? I took 4 of those off while taking off the IHS.
11-08-2005, 12:01 AM
Darkenreaper57

Hmm, does the stock HSF maintain proper contact with the cpu if the IHS is taken off?

I want to pop the top on my opteron 146, but it will be a while until I get my w/c system back up and running (using stock HSF now).

Oh yeah, has anyone had any troubles with uneven contact between the HSF bottom and core? I read that the bottom of a HSF often hits the "cam" lever of the cpu socket since it CAN be higher than the core (but by a very small amount).
11-09-2005, 03:26 AM
alpha0ne

Quote:

Originally Posted by ajshin27

Anyone know how to do this with a Zalman 7700? I took the IHS off of my opty today and took off some of the resistors next to the core while doing it :eek: Thank god the cpu still works but ambient temps are still the same and load temps have gone up from 56-59 to about 60-63. I put 4 this pieces of cardboard on the corners of the cpu, but the heatsink still wobbles around a bit. Any ideas? Also, what exactly do those resistors next to the core do? I took 4 of those off while taking off the IHS.

You are really lucky its still working, can you post a picture :)
11-09-2005, 03:30 AM
aiya_au

has anyone tried putting a TT BT 'naked' cpu?

i'm thinking about doing it to mine but scared of the clearance that may occur taking off the IHS
11-09-2005, 07:50 AM
4rory

I have a xp-90 on a naked venice very easy way of putting on the heatshink without causeing damage is to do what they tell you to do here http://www.thermalright.com/product_default.htm

put in the 2 front hooks by tilting the heatsink foward then just angel it down to contacting the chip while pulling the heatsink up and let it come down flat, then clip in the remaining clips.
11-09-2005, 08:05 AM
largon

Quote:

Originally Posted by ajshin27

Also, what exactly do those resistors next to the core do? I took 4 of those off while taking off the IHS.

They aren't resistor but SMD capacitor packs. Guess they filter vCore.

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