Removing the A64 IHS

[twilius_basic]

Anyways, I bought an XP-90 heat sync and with the IHS off ...

I have an XP-90C, but I'm worried about mounting it onto a bare core. When mounting, the clip-method does not apply pressure evenly, same when removing the hsf.

Did you do anything special for mounting?

[Borgschulze]

Ok, had to get a new heatsink as my stock one the retention clip broke.
Using a Zalman 7000-AlCu.
Before. With IHS.
Room Temp. 20C or a bit less.
Idle 45c
Load 55c
Now. No IHS.
Room Temp. 30c or so..
Idle 39c
Load 55c

[frostedflakes]

For any small core (Newcastle/Venice/San Diego), I would recommend using a soft support of some kind on each corner of the processor. The foam pads from an Athlon K7 work well. You can use a razor blade to scrape them off, and then a very small amount of superglue to attach them to the A64. If you ever need to remove them, use a drop or two of acetone on the pads and then scrape them off like you did before with a razor blade. Use acetone and a Q-tip or razorblade to remove any remaining glue residue.

I wouldn't worry about this with a Clawhammer, as the die is practically the size of the IHS...

Here's a pic of my Turion64 with the pads installed. Every since I chipped the core of an old 2800+ Newcastle, I've been extra careful with my A64s.

[cu2day]

My old heat sync was the Cooler Master Hyper6, it was too heavy and tall to cool my bare CPU core without the IHS. I have the XP90 non copper, and use nothing at all to hold the heat sync tighter. If I'd of got the copper version it would most likely be too heavy again for go without the IHS. I manage to top out at 38C after hours of load at a room temp of about 22C at 1.475volts from 2Ghz to 2.3Ghz and that is with my fans set to low speed though I am using a 120mm fan on my xp90 which works well with low RPM cooling 1800 RPM to be exact.

[fareastgq]

Posted this in the sandy discussion thread, (due to a discussion about sandy temps) but will do it here too, because this is really were it belongs. Here's a nice pic of the core and the spreader too, hehe.

I just did a bit of surgery, dropped my idle temps from 42c to 32c literally. Also, I guess I answered my own question, heh, what was on that spreader? Plastic gooey shin etsu, same stuff amd has been coating stock HS's with for yrs, NOT good, 1 layer of plastic + 1 layer of copper + 1 more layer of plastic (for those who are too afraid to use anything else) + a stock HS = crap for temps. I imagine I would have been at about 45c idle if I did have that 2nd layer of junk. So glad I took it off. The core is small, heh. fyi, I had to sand down my dfi HS bracket all the way except for 1/10 of a centimeter. I ran a 8 min super pi just to see how high the temps would spike, they didn't go past 42c. 10c must be pretty consistent for a temp spike seeing as how everyone else is getting about a 10c spike, 3 gigs, here I come, heh.

http://pg.photos.yahoo.com/ph/neeb_v...de.jpg&.src=ph

[AMDnewbie]

finally remove the IHS of my crap venice... only 2.75Ghz on 1.68v..

I don't want to lap it since also void warranty so took the heart out to remove it....

load temp reduce by 11 degree celcius and now at 41 on load...

heres the pics:
<img src="http://i2.photobucket.com/albums/y5/wingzero99/DSC00011.jpg" alt="Image hosted by Photobucket.com">
<img src="http://i2.photobucket.com/albums/y5/wingzero99/DSC00010.jpg" alt="Image hosted by Photobucket.com">

took less than 15 mins to slice off the ihs but 4 hours to repair bend pins... y don't amd use those pga like intel....no pins!!!!

thanks for all the informations and now back to overclock this chip....

[Der_KHAN]

lol, ist that mounting for the cpu block self-made? mine looks exactly the same

[Electroid]

Winnie + Radeon Shimm

[harleybro]

Hopefully someone can help. I had a 3500+ I sliced and cut into the board (Didn't realize it lapped the IHS and reapplied causing it to short). I killed my 4000+ sliced it and all went well. At first. Used nail polish to cover the chips around the core since I wanted to use DI eventually. Put on my waterblock and was careful. Booted for a sec. and died. I found one of the chips arced against the H2O block. Saw the burn on both. Now I am really considering doing it on my FX but what should I use to keep it from shorting. (I hate grease)

[Borgschulze]

Hopefully someone can help. I had a 3500+ I sliced and cut into the board (Didn't realize it lapped the IHS and reapplied causing it to short). I killed my 4000+ sliced it and all went well. At first. Used nail polish to cover the chips around the core since I wanted to use DI eventually. Put on my waterblock and was careful. Booted for a sec. and died. I found one of the chips arced against the H2O block. Saw the burn on both. Now I am really considering doing it on my FX but what should I use to keep it from shorting. (I hate grease)

Make sure you hold the blade perfectly parallel with the chip.
And do not go in any more than a half centimeter,
Start at the corner and then slide the whole blade under the side no more than a half centimeter, you can feel when you hit one of the little chips that are on top of the organic material.
Just be more careful this time if you do decide to do it.

[alexio]

What are the exact dimensions of the San Diego core ? (in milimeters please)

Just like to know because I'll be making a waterblock for that chip soon

[Borgschulze]

64 mm2 I believe.

[harleybro]

Well I've got the cutting part right but what I am confused about is why my chip may have shorted against the waterblock.

[justwOo]

just put a strip of white tiny white foam you get with some hardware on all sides of the cpu, that'll help stop your waterblock/hs from rocking and shorting out
btw.. nice shim electroid!

[brandinb]

64mm is too big thats bigger then a stock cpu fan!! it looks like 15mmx12mm or something from peeking over at my shim i poped off and looking at the footprint
________
VAPORITE REVIEW

[alexio]

64mm is too big thats bigger then a stock cpu fan!! it looks like 15mmx12mm or something from peeking over at my shim i poped off and looking at the footprint

64mm is the diameter.
64mm2 is 8mm*8mm. Looks bigger to me though.

Looks like 9mm*12mm or something

[Borgschulze]

64mm is the diameter.
64mm2 is 8mm*8mm. Looks bigger to me though.

Looks like 9mm*12mm or something

64mm2 is from AMD's website...

Anybody know anyone else who took off the IHS from their Sempron?
I seriously am considering saying I am the only one....

[wevsspot]

I can attest that removing the IHS on the Venice core will increase your O/C ability and reduce temps, especially under load. I've been stuck forever at 2.565ghz on my AMD63 3000 Venice. I just couldn't give it enough juice and keep the temps. where I was comfortable. Removed the IHS and boom! Was able to use 1.52v and get my Venice to 2.610 Prime and MemTest Stable. Now, this isn't for the faint of heart. I've got a ThermalRight XP90 with a 90mm silent cat on top. I used lighter fluid to "soften" the glue that holds the IHS on the Venice core. Then I proceeded to gently use a razorblade to cut through the adhesive. Up to that point everything was looking great. But then I found that due to the HS bracket on a MSI K8N Neo 2 motherboard that my XP90 wouldn't clear the CPU hinge brackets on the motherboard. So off to the bench grinder I go! Well, 2 hours later I had removed enough material for the HSF to clear the CPU socket on the MSI m/b. Used some AS5 (just a dab) and installed my "modified" heat sink and fan. Max temp. under load running F@H and Prime95 Torture Test is 48C. Used to be 56C at lower voltages and CPU speed. This has got to be one of the best mods I've ever attempted!

[kite7]

Would it be worth it if I took off the IHS, put AS5 on it and put the IHSback on?

[THunDA]

Would it be worth it if I took off the IHS, put AS5 on it and put the IHSback on?

It might help "a little" but not nearly as good as no IHS..

Personally, I wouldnt void my warranty just to put AS5 on the core..

[wevsspot]

I agree 100% with THUNDA. Once that IHS is off, leave it off. I see you've got a Venice 3000, so we're not talking about a $800 processor. If you do remove it, I can almost guarantee that the AMD64 overclocking gate will disappear! I was very impressed with the weight, thermal paste and thickness of the IHS when I removed it, but there is no question that direct contact between your core and your selected HSF works better than the interference caused by the AMD IHS. Honestly (and I said it in my original post) this was the best two hours I've ever spent modifying hardware. Even considering the problem I ran into with my XP90 heatsink.

[PoL]

At last, I took it off.
I won't be able to try it till august, but doesn't matter, I hope it'll help to get better temps.

Any tips to take into account?

[sai]

[Ferry82]

I'm want tho remove my IHS to from my 3000+ that does 2800-2900 on air.
Isn't this tricky with a XP120 cooler??
I want to see more pics please.

Better use the paths on the corners?
Or mod the bracket???

[Ugly n Grey]

I am so tempted to try it with my x2 but I don't dare. They are just too much bread. Having said that I will try with my Venny 3000+ for the competition. I was thinking I'd remove the IHS and then mill down the outside edge and remove the center until it was flush with the core. So imagine the IHS with the core poking out a hole and everything nice and level. Might help the crush factor.