How much of a difference should repasting make?

I repasted just now after pretty much 20 months on stock factory paste. The paste was stuck on so hard that if I tried to lift up the cpu heatsink, the cpu would come off with it. Anyway before my temps got up to around 95-100c max. I just did a post paste 15 minute furmark run and came out with 89c max. Is that normal or should I see more of a decrease? Will the temps get better over time?

 

I think your temps should decrease the most one day from the moument you repaste.

I could be wrong but generally the paste needs a bit of time.

 

Not if you paste with IC diamond. that stuff dropped my temps 5c from the second I booted up

 

make sure you didnt use too much thermal paste. You only really need a minimum amount of paste. Its supposedly less conductive than the copper heatsink and its main purpose is to fill in the gaps in the metal to create complete contact between the cpu and heatsink.

going from 95-100C to 89C is pretty good for a repasting job. you might want to look for other ways to keep temps down. try clearing out any dust bunnies in the vents. making sure u have good airflow.

 

I repasted and swapped CPUs at the same time. I went from 75-80 with an i3 dual to 65-70 with an i7 quad. There was so much paste on both the CPU and GPU from the factory that I'm almost positive it was restricting heat transfer, not aiding it.

 

Ok im really confused now. While gaming my temps are still going up to 98c... what the hell?

 

^ Repaste properly. My 720QM on last Envy 15 never went over 75c

 

Well I dunno if i did it right. I basically cleaned off the old residue nicely, put a blob of Arctic silver 5 on the gpu and stuck the heatsink on. However i think the heatsink slid a bit in one direction and may not have spread properly. I might just do it again tomorrow if these temps stay horrible after 24 hours. How do i do it right? Should i just spread it on?

 

you need enough to cover the whole thing. If you don't cover the whole heatsink then air will get in and ruin the paste. If your using ICD it doesn't matter because its non conductive and you rather use more then less.

go to the various manufactures sites for instructions on the exact amount. I attached a simple image showing the rough amount for ICD and how to apply it. I personally would use ICD because its non conductive and not to hard to apply.

EDIT: I dropped like 20C but i think that is because the factory paste was crap plus i dont think they tightened the heatsink down very well. You want to use 50psi? or 50lb of torque? I forget which. Basically enough where you can't tighten anymore without using retard strength.

EDIT: do not spread it...use a small pea size depending on size of gpu. Something like my picture. Remember with AS5 it is conductive so dont put to much where it overspills. Also do not lift up once applied. A small slide wont hurt.../much.

 

Okay well on the cpu i followed AS5 instructions and used a card to spread it onto the entire cpu before i put on the heatsink. For the gpu I just put on a tiny blob, but I really am not sure about how much is too much. This has to be the most vague thing about repasting. I'll redo the repaste later and if I don't see an improvement still, what do i do?

 

A couple of things:
- You can actually get an arctic silver two stage cleaner that you can use to clean off previous grime, which I picked up for like $6 or something, otherwise I've heard of alcohol, methylated spirits and nail polish remover works well too.

-Blob should be minimum - remember the POINT of the thermal paste is to conduct heat AWAY.

-Spreading the paste: this is where things diverge... I've heard to just put a blob in the middle, i've heard use an edge of a plastic card, I've heard use the heat sink itself to spread the paste around...

personally, the best result I think I got was using a plastic sandwich bag (like glad wrap), put it around my index finger, and used that to spread the paste is a concentric circular manner.

Also don't expect the moon to drop in terms of temps, I only saw a 7 degree drop when my maxed CPU was hitting high 90's on one of my acer laptops. However I did see a big drop in resting, idle temp.

But yeah, I've pretty much decided to make sure I get a laptop with excellent heat dispersal and easy access to the heat sink before anything else. I've done quite a few repasting jobs, but that acer laptop was HORRIBLE... had to pull off mobo and everything

 

wait i think your right...i haven't used AS5 in forever if the site said to spread it out then do that but i thought it was a blob in the middle....weird. If it says to spread it out then a nice thin layer...enough to cover the pours on both sides but not enough to get in the way.

 

With high-grade thermal paste you should see an "up to -10c" reduction in temperatures. It also takes X amount of hours to see its full potential.

Repasting should be done once a year.

 

The point is though that I don't see a difference. I thought i did but as i started gaming my temps actually stayed the same, perhaps even got higher? I'm reaching 100c in dota 2 after the repaste. I'm thinking of just redoing it all over again because it was my first time attempting a repaste.

 

- Paste brand might of been poor
- Pasting job may have been poor (bubbles; not enough; too much)

You should watch a few videos to get the idea and feel of what a good pasting job is from a few perspectives

 

lol are you reffering to temps on the G51j? yea pasting isn't enough. i'll give you pictures of mine after all the mods i have done. With overclocks on cpu and gpu running F@H I get 72-74C gpu and 58C cpu.

 

see this article on applying thermal paste. it convinced me anyway.

 

Okay i just re did my repaste today. This is how much i put on: Pics below.

However temps are still staying around the same. There MAY be around a 5c drop but i was hoping for more. I'll give it about 200 hours like it said on their website for "optimal" temperatures to take place. If not then idk what to do next...maybe get IC7? But I don't wanna waste money on more paste that may or may not make a difference.

Gpu:
http://i.imgur.com/IF6Bl.jpg
Cpu:

 

An easy way to compare and see exactly how much paste is needed on exactly your die is to use something with a flat surface, like a card, and squeeze the blob down with it then remove the card to see the result. Then clean it with alcohol and redo the paste with the correct amount

 

yea that is not enough paste...you need like 50-100% more...and put it in the center...you missed the center by too much. If you use ICD I would use 2-3 times that. (plus with ICD you can't really use less then 2-3 times that because its thick)

EDIT: Also I can tell your white Also looks like you need to clip your pinky nail lol

 

Really? That's not enough? When I opened it up from my previous paste job it was pretty much covered in a good layer of paste. So I reduced it a bit. I know it's not completely in the center so i moved the heatsink around a bit to spread it out.

 

really that much covered the whole thing? wow...doesn't look like enough. You want just enough to cover the whole heatsink once tightened...if that did it cool. Also make sure its as tight as it can be otherwise you loose out on contact. Like I said tighten it as much as you can without retard strength. It should be tough to turn.....use some common sense

Also once my wife gets home and she can hold the laptop up and help me take pictures i'll start to make a thread and i'll give you the link. You can drop your temps buy miles with one simple mod...add a couple others you'll be like me at +-40C idle and 74C gpu max and the fan wont even spin up

 

Cool. I think AS5 isn't the best possible paste I could've used. I'll give it around 200 hours to break in like the instruction manual said and then if I don't see a difference I'll try repasting with IC7.

 

buy ICD24 you get a lot more paste for your money....its like a life time supply for the average joe. It is like 20-25 bucks online. do a google shopping search. Also then you can be the cool guy that gives the extra to your friends

 

http://forum.notebookreview.com/asu...-copper-case-cooling-pad-mod.html#post8485097

there is the thread I made with all the mods I have done. Only one mod I have not done but I included it so people can see what everything can be done. Also you will see that I broke down the process over time I have done to modify it. so you can see the difference between each mod. Honestly the two most important mods are the case and redoing thermal paste