View Full Version : To Lap or not to Lap, that is the question!
As the title suggests really, is lapping really as important now as it used to be?
I lapped my Q6600 when I got my new heatsink and fan and did some temp checks prior to lapping it and made quite a nice saving of around 10-12 degrees IIRC!
Is this still needed? I haven't seen anything mentioned of it for a long time and it used to be at least mentioned in every other post on an Overclocking forum.
Are CPUs coming out from the factory with flatter tops?
Some do still flash over the cpu'z and cooler and some say its more important to put the paste on in the right way dot/stripe etc.But if you did get lower temps then id say its worth it possibly for overclocking.
Edit - A Lot removed for being a bit too negative :p
I've lapped a few processors in my time (for friends as I have the room and lot's of high grit sandpaper, and I just do it don't sit worrying about the consequences)and have never seen an improvement good enough to warrant it I overclock my processors as far as they will stably and I have not reached dangerous temperatures(circuitry doesn't age faster below a certain temp and this is my safe point you will have to research your processor to find that point). You do have to remember though the surface of a modern processor is a heatsink in itself (anyone remembering putting a heatsink directly onto the core will know this), thermal compound applied right is more than enough most use high amounts of pure silver which is a better conductor than copper and of course a silver shim would be a nice solution without losing your warranty.
I think what I'm saying is each to their own you want to save a few degree's and be able to see yourself in your processor (think thats what mirrors are for) go for it but if your thinking about it, not sure worried in any way about warranty don't (of course remember that you do a massive overclock your warranty is void anyway and they will know).
Honestly I don't think it's really that necessary now. Moreso in the days of the Athlon T-bird & XP CPU cores when there was less surface area to be in contact with the heatsink. But there is plenty of surface area nowadays so it's easier for the heat to dissipate. There is also a big improvement now as well in the heatsink machining, particularly the more expensive ones..
I've never really dabbled in OCing, so obviously this has passed me by... however, what is "lapping" never heard of it before. Just interested ;-)
Lapping is basically sanding your processor and heatsink surfaces to make them perfectly flat to give best contact possible, getting rid of the imperfections that are in most processors and heatsink surfaces.
Blimey... thanks for the info. Figured it might be something like that... would you still need to rely on thermal paste... presumably yes.
Yeah, you still need thermal paste as it fills in all the micro imperfections you can't see but are heat soaks.
When I lapped my Q6600 I was shocked at how concave the heatsink actually was. To the point that I thought I was going to break through at one of the corners before I had even touched the centre of CPU ( thankfully the heatsink is thicker than I thought).
Would I do it again? Meh, I dunno, depends on what speeds I could get at what temperatures but I just wondered what you thought.