The better the lap the less paste you need. Thats how it works. The best possible thermal transfer would be a 100% (physically impossible but you can get close) perfect connection between the two plates. Rendering thermal paste useless.
The idea of thermal paste is to eliminate the microscopic air pockets and imperfections between the two plates. The smoother the plate, the less you need.
More thermal paste will not make the thermal transfer better, it will make it worse.
I lapped a lot of heatsink , then first K6-processors, i lower the temp in 10 celsius, in Athlon XP 2000 12 C lower than original Heatsink, now maybe try with AM2 Athlon 3500,
NEVER use polish after sanding. It hurts the contact between the cpu/heatsink by leaving a minute layer or polish on the surface, making it harder for heat to transfer. You dont need a shine, noone will ever see it.
Its silly to polish it. Its just going to get messy from thermal paste. Just never polish if youre going to all the trouble anyway to get the best heat transfer by lapping.
yes its dumb that you are paying for a product if u still have to lap it but o well i guess we gota to deal with it lol they probly wanna save little money
i know, allot of people talk the big talk but the highest overclock Ive seen that actually is stable on a daily bases was a new QX9750 3.2 GHz over clocked at 4.2, that is water cooled and using a 790i board designed to take heat punishment on a daily bases.
the 45nm chips have the best potential to be overclocked because they use less electricity to perform the same tasks hence less heat (resistance) is generated over use.
This guy is obviously just demonstrating how good his lap job is. But when you actually use the cpu/hsf you should always use thermal paste. The better the lap job the less paste you need.
no matter how hard you try to make metal sufaces flat.. itd still be microscopically rough, and since molecules of thermal compounds get into those grooves it improves contact more. If metals can really be smoothed out so that theyd be super smooth then we shouldnt bother about gaskets and oil for other stuff as well. Lapping is supposdly just to improve things.
which leads me to my question number two.. why in the world would someone want to use less paste? even if you do lap it, wont NOT drastically reducing paste further increase the effects? dont tell me paste is too expensive O_O
thats exactly it... you CAN scale it down. But when you have enough paste to not scale it down.. then why bother scaling down?Wont a lapped up surface+regular amount of paste work better than a lapped up surface+scaled down amount of paste? I dont get it...the reason for lapping is to improve the transfer of heat..when you improve one area why regress another area?
I know I'm a bit late but, usually when people report a very large drop in temperatures after lapping, it will be because of a concave/convex IHS or heatsink base or both, so in some circumstances when you do have a convex/concave IHS it makes perfect sense to lap the hell out of it to get a flat surface, this is the true goal of lapping, NOT to produce a shiny surface but to produce a FLAT one.
I did not use thermal paste for video. Surfaces are very flat so even air can´t get between for 7 seconds. When I assembled cpu and cooler I did use thermal paste, but amount was barely visible. Got my cpu temperature down by 10-15 celsius.
ITS SO SHINY!
GT5Enthusiast 1 year ago
Did you lap the Noctua heatsink? Or was it flat enough?
pcman09 1 year ago
@sho.
The better the lap the less paste you need. Thats how it works. The best possible thermal transfer would be a 100% (physically impossible but you can get close) perfect connection between the two plates. Rendering thermal paste useless.
The idea of thermal paste is to eliminate the microscopic air pockets and imperfections between the two plates. The smoother the plate, the less you need.
More thermal paste will not make the thermal transfer better, it will make it worse.
MastaSquidge 3 years ago 2
I lapped a lot of heatsink , then first K6-processors, i lower the temp in 10 celsius, in Athlon XP 2000 12 C lower than original Heatsink, now maybe try with AM2 Athlon 3500,
Greetings
nopochoclos 3 years ago
What did you use to polish things out?
BlazEajayaday 3 years ago
most people use very fine snadpaper
all the way up to 2000
then finish it off with some polish to make it shine
twistedmetal976 3 years ago
NEVER use polish after sanding. It hurts the contact between the cpu/heatsink by leaving a minute layer or polish on the surface, making it harder for heat to transfer. You dont need a shine, noone will ever see it.
joeyisfunny 3 years ago 2
You can polish it
You just have to get some alcohol to remove it completely
twistedmetal976 3 years ago
Its silly to polish it. Its just going to get messy from thermal paste. Just never polish if youre going to all the trouble anyway to get the best heat transfer by lapping.
joeyisfunny 3 years ago
Yeah - all polish does it make it look nice for a video :-)
twistedmetal976 3 years ago
Some people go even higher. I go from 400 to 2500 to 10 micron ;)
1337AsianProductions 3 years ago
It costs more for them and takes longer to manufacture.
Born2killx 3 years ago
yes its dumb that you are paying for a product if u still have to lap it but o well i guess we gota to deal with it lol they probly wanna save little money
BoY860 4 years ago
how much cooler did it get can u lapped the cpu 2
chasin2 4 years ago
lapping improves heat transfer between the cpu and heatsink
unless youre overclocking beyond the limits of the cpu, and every little thing counts, their is no need to lap.
heat is the biggest killer of processing power, a Turkish team overclocked a quad core to 5.5 ghz before crashing at 190 degrees C,
godscuttingyoudown 4 years ago
thats pretty crazy
now if only someone figued out how to run quads at those speeds while at the same time, having the processor live for daily use
or without having to cool with nitrogen and dry ice
twistedmetal976 3 years ago
i know, allot of people talk the big talk but the highest overclock Ive seen that actually is stable on a daily bases was a new QX9750 3.2 GHz over clocked at 4.2, that is water cooled and using a 790i board designed to take heat punishment on a daily bases.
the 45nm chips have the best potential to be overclocked because they use less electricity to perform the same tasks hence less heat (resistance) is generated over use.
godscuttingyoudown 3 years ago
Awsome man.
Lapped my Opteron 170 today but not that
good ;)
5chr4pn3ll 4 years ago
he just wanted to show us his xBox and tv @ end, AAAHHH lol
AKAHowitzer 4 years ago
This guy is obviously just demonstrating how good his lap job is. But when you actually use the cpu/hsf you should always use thermal paste. The better the lap job the less paste you need.
ineedaname4 4 years ago
no matter how hard you try to make metal sufaces flat.. itd still be microscopically rough, and since molecules of thermal compounds get into those grooves it improves contact more. If metals can really be smoothed out so that theyd be super smooth then we shouldnt bother about gaskets and oil for other stuff as well. Lapping is supposdly just to improve things.
shogrran 4 years ago
yeah, its not to eliminate the thermal paste
BUT I'm sure he would only use a fraction of the amount comparing to what he would use if it werent lapped
twistedmetal976 3 years ago
which leads me to my question number two.. why in the world would someone want to use less paste? even if you do lap it, wont NOT drastically reducing paste further increase the effects? dont tell me paste is too expensive O_O
shogrran 3 years ago
All the paste does is fill in the imperfections and scratches on the heatsink and processor.
The smoother they are, the fewer imperfections they will have.
Therefore, you can scale down on the amount of paste.
twistedmetal976 3 years ago
thats exactly it... you CAN scale it down. But when you have enough paste to not scale it down.. then why bother scaling down?Wont a lapped up surface+regular amount of paste work better than a lapped up surface+scaled down amount of paste? I dont get it...the reason for lapping is to improve the transfer of heat..when you improve one area why regress another area?
shogrran 3 years ago
Idk... it sounds right in theory
All I know is that CPU temps drop a few degrees when it's lapped.
The more direct contact on the HS to CPU is best - I guess less paste = less resistance
twistedmetal976 3 years ago
I know I'm a bit late but, usually when people report a very large drop in temperatures after lapping, it will be because of a concave/convex IHS or heatsink base or both, so in some circumstances when you do have a convex/concave IHS it makes perfect sense to lap the hell out of it to get a flat surface, this is the true goal of lapping, NOT to produce a shiny surface but to produce a FLAT one.
joebonte 3 years ago
actually putting too much paste can raise temps.
lol 1 year later :P
swishersweets666 2 years ago
were the cpu and heatsink surfaces dry? or you used some water to improve results? :)
RoLeRzzz 4 years ago
On the video both are as dry and clean as possible.
SiB77 4 years ago
WHOA...shiny...i have a 3500+ too what did you do?
Br8ssface 4 years ago
DUDE, TEACH ME!
trukin 4 years ago
You super foolish to never use any paste...
WhiteZerox 4 years ago
How come? If the surface is super smooth then paste isn't THAT necessary.
s3rrated 4 years ago
there's still scratches on the HS/CPU after lapping, you just cant see them
twistedmetal976 3 years ago
lol nice man
berkut2006 4 years ago
this is what I find works when I lap or dont lap
Good Lap job - No Paste
half Assed Job - Crap watery paste
No Lap Job - AS5
Lap job on Naked Core - Layer of AS5 by razor blade
ItsPlugtastic 4 years ago
I did not use thermal paste for video. Surfaces are very flat so even air can´t get between for 7 seconds. When I assembled cpu and cooler I did use thermal paste, but amount was barely visible. Got my cpu temperature down by 10-15 celsius.
SiB77 4 years ago