Shims- the undercoat of CPU'S?

[dummy2001]

Compubuzz recommends buying a cpu shim to protect your cpu from getting chipped or cracked. If you're careful attaching the heatsink, is there much chance of chipping after that? Are these useful or a waste of money?

 

[AcidzT]

its kinda like insurance, excpet you only pay your $8 once. In my opinion its worth is, if i had had one i wouldent have had to buy a new 900 Athy..... Its really usefull if you switch heatsinks. To tell you the truth i still fear putting a heatsink on a AMD but with a shim its much easier. And i recomend the Purple Annozided (sp) ones, tehy are like $8 and they work will all current AMD chpis, including XP.....

I got mine from Coldcpu.com i highly recomend them,a nd they have nice heatsinks ato decient prices, and there "rating" is extremly good

 

[AcidzT]

oh dude i hope your dont plan on ordering from compubuzz, i was too but i got there rating from: Rating for Compubuzz

Once again i HIGHLY recomend ColdCpu i need to go and post my rating for them soon

 

[dummy2001]

Thanks for the rating on compubuzz. I don't know about the shim. Apparently the cpu comes with a pad on it, and the shim can conceivably keep the heatsink from touching the cpu enough enough to fry it. Sounds strange to add a new risk to avoid a known one.

 

[Creig]

Well, I'd try one of these shims. They're non-metallic so they don't conduct electricity and they also won't hold heat the way metal does. I wouldn't worry too much about the shims keeping the heatsink off the CPU die. They make them to very close tolerances to ensure that it won't happen.

 

[Wind]

Shims

Benefits = prevent crack core during installation.

Risks = Non-contact, improper contact due to bad installation...fried CPU.
Conductive shims will increase temp by 1-2C.

U decide. But I always say...u dun need a shims...just read the installation manual carefully & u r going to be OK.

 

[Richardito]

I wished I had a shim on my Celery... It has now two chipped edges, put it has given me no problems. Just make sure you get a high-quality piece with the needed tolerances.

 

[Jeomite]

<< Conductive shims will increase temp by 1-2C. >>



I thought they were also supposed to provide a few degress less in CPU Temp, since it provides better conductivity between the Processor and Heatsink?

 

[Mikewarrior2]

<<

<< Conductive shims will increase temp by 1-2C. >>



I thought they were also supposed to provide a few degress less in CPU Temp, since it provides better conductivity between the Processor and Heatsink? >>




No, becuase it only contacts CPU pcb... the PCB is not a heat-producing source on the CPU, the center die portion is hte only section producing heat.



Mike

 

[Wind]

<< No, becuase it only contacts CPU pcb... the PCB is not a heat-producing source on the CPU, the center die portion is the only section producing heat.

Mike >>


Agreed Mike. But wouldn't the heat produce by the core transferred to the side of the shims (near the core) tht would technically heating up the shims a little ?

In reality, the core temp could be 60C hot. So, w/ tht amount of heat...hmm.....

 

[Mikewarrior2]

the problem is, whatever little heat transferred to teh shim won't transfer to the heatsink... A good shim isn't quite tall enough to contact the heatsink (and when it does isn't necessarily a good thing).

THe heatsink base is the second hottest item next to the CPU core, then whatever little heat is in the Copper Shim. Heat will tend to flow from heatsink base (if it has good contact) to the shim then to the CPU PCB.

THe best look at this was a user p3/peltier/copper shim review at overclockers.com. Even when applying a cold-peltier surface to the shim it resulted in warmer temps for the CORE. Not socket-thermistor, actual diode readings. Without the shim and just hte peliter, his temps were lower.

Now imagine a heat-source on the copper shim... if a cold shim hurts temps than a hot-shim will more than likely do the same.



Mike

 

[Wind]

<< the problem is, whatever little heat transferred to teh shim won't transfer to the heatsink... A good shim isn't quite tall enough to contact the heatsink (and when it does isn't necessarily a good thing).

THe heatsink base is the second hottest item next to the CPU core, then whatever little heat is in the Copper Shim. Heat will tend to flow from heatsink base (if it has good contact) to the shim then to the CPU PCB.

THe best look at this was a user p3/peltier/copper shim review at overclockers.com. Even when applying a cold-peltier surface to the shim it resulted in warmer temps for the CORE. Not socket-thermistor, actual diode readings. Without the shim and just hte peliter, his temps were lower.

Now imagine a heat-source on the copper shim... if a cold shim hurts temps than a hot-shim will more than likely do the same.

Mike >>


So, Mike...u agreed w/ me tht shims might actually increase temp by 1-2C ?

 

[Mikewarrior2]

Correct... Shims do have the ability to raise temps (the copper ones, that is)....



Mike