View Full Version : Any significant benefit to putting NB/chipset on phase?
Speederlander
12-07-2006, 10:50 AM
Just curious. I'm sure people here have tried it.
epion2985
12-07-2006, 12:53 PM
We have yet to see much benefit from water cooling the NB, let alone phase change cooling. In most cases decent heatsink with a fan is more then sufficient :)
LvMike
12-07-2006, 01:06 PM
I can confirm, that there is no real benefit, i did a couple of tests going so far as to tec cool a chip set and inn the end gains were marginal at best. better results came from putting a better heat sink on the mobo's power regulators.
Brettbeck
12-07-2006, 02:36 PM
I've seen a few people using D-ICE on the NB before. But overclockers like hipro5 just use good heatsinks and fans :).
[486]
12-08-2006, 04:44 AM
not meaning to steal your thread but also about how meany watts does a northbridge give off?
[getting the m-atx sli motherboard and am going to see if a far better cooling solution (a tec) would increase the life of it]
Thanks!
jinu117
12-08-2006, 05:12 AM
Northbridge heatload seems to differ tremedously from chip to chip (in scale of percentage). Some do work better at extreme edge, some doesn't even for same mobo from few reports. Just like all things are quite random on overclock, I wouldn't be surprised such applies. remember some A64 not liking cold too much while some just loving it? :) And I don't think northbridge even has as much binning process/qualification process as cpu considering their price... we are really left guessing on this...
i wonder if the 680i would benefit
As i said in another thread, zbogogorn used DICE on the 975X chipset. Don't know the correct figures but the FSB on an E6700 was very high :) They said it helped.
star882
12-08-2006, 01:36 PM
For something that small, a Peltier makes more sense.
I did a dual head unit recently, on my mobo ASUS p5b my FSB limit stayed the same after phase changing the NB, also with vmod 2v still no gains under phase. I couldn’t confirm though if the FSB limit was the E6600 or the chipset though.
Post 86 onwards
http://www.xtremesystems.org/forums/showthread.php?t=90982&page=4
Also with the crapy 775 DFi mobo after water cooling the chipset still the same low FSB limit (under 400FSB) so again this situation no gains.
Youngpro has just done some tests with his new dual head on his DFI SLI-DR Expert Board and that didn’t like the cold either on the NB, also being that the CPU was an AMD the coldbug kicked in as well so no good results.
The cooler only arrived last week so in next few weeks he should have some more results. Next will be a 6600 with another Asus p5b and after that a dfi rd600.
johann
12-12-2006, 12:27 AM
As Tom said, JohnnyBravo used a singlestage (My Benchbox :) ) to cool his 965 northbridge while cooling his CPU with dry ice.
He claims quite an improvement. The chipset was running around -63c loaded temp.
Read here for full details:
http://www.xtremesystems.org/forums/showthread.php?t=125513
http://abit.ohyeah.idv.tw/forums/get-attachment.asp?action=view&attachmentid=46
Trouffman
12-12-2006, 02:13 AM
Yep! Cooling on phase or in negative, help the chipset ;)
We've done some bench with DI on chipset and we've reach greater fsb !
http://www.syndrome-oc.net/articles.php?article=77
DI on Chipset : 975X :
http://www.syndrome-oc.net/img/articles/ga150406/demo32b.jpg
DI on mosfet :
http://www.syndrome-oc.net/img/articles/ga150406/demo33b.jpg
johann
12-12-2006, 03:15 AM
wow man thats insane lol
Trouffman
12-12-2006, 04:25 AM
Love playing with DI ;)
Johnny Bravo
12-22-2006, 10:01 AM
Hey guys, as has been pointed out yeah for the i965 showed some real gains, highland3r also showed similar boosts. Have limited my testing to just this chipset tho will be trying the i875 soon too, iirc Tomshardware put a SS on theirs with some impressive results. I can't say its a case of one size fits all, sometimes when you reach the limit of the silicon thats it, you're not going any further. I take it those who have not noticed improvements have also tried vmods for the NB etc???