hotspot now that im watercooled

UpAllNight · 05-06-2002, 02:29 PM

well i happy with my setup so far...but i reached in to see how hot it was around my cpu and noticed it was hot to the touch in the area maked below...should i put a fan blowing across this area?

WebMasta33 · 05-06-2002, 03:16 PM

Those are all the capacitors that provide power to your CPU. I would have a 7 or 5volt fan around there.

DigitalChaos · 05-06-2002, 03:35 PM

its not the caps making the heat... its the mosfets making the heat... the mosfets are actually using the mobo as a heatsink.. and that goes right into your caps.. or anything else close by.

i would say putting small heatsinks on the mosfets (even though the wrong side is showing.. along with a small fan if that doesnt help out.

a real easy way to cool that spot down is with Idling software.. if your cpu isnt running, then the mosfets dont need to supply power, and therefore you make everything happy =)

DigitalChaos · 05-06-2002, 03:37 PM

now that i look at that pic again.. looks like you have an epox board (you have every piece of hareware in you sig... but the mobo

)

which means you have 3 mosfets on the top of the board, and 3 on the underside of the board.. ack!

have fun =)

dantheman · 05-06-2002, 04:28 PM

That would be the easyest thing to do. Just go out and find a nice 386 hs and use it. Cut it to size and use some thermal epoxy. If you are able to change where some of your heat is going, those caps will not get as hot.

UpAllNight · 05-06-2002, 04:48 PM

Quote:

which means you have 3 mosfets on the top of the board, and 3 on the underside of the board.. ack!

are these the mosfets ?

and what kinda idleing software do u like?

MeltMan · 05-06-2002, 06:35 PM

yes those are fet's. You could just not worry about it since the mosfets are made to run at very high temperatures. If they were getting too hot, the mobo manufacturer would have heatsink/fanned em already. MOSFET's generally have a max operating temperature of 150c. You are running WELL below that mark.

ECUPirate · 05-06-2002, 06:46 PM

the picture is not very clear for my poor eyes..

so the mosfets are the little rings w/ exposed copper coiled around them? Will they shock you if you touch them? How about if you lick them...? kidding.
seriously though. ...

dantheman · 05-06-2002, 06:47 PM

no, they are the square things laying on the board.

MeltMan · 05-06-2002, 06:47 PM

no mosfets are the little black squares with 2/3 contacts comming out of one side.

The little ferrite cores with magnet wire around them are small inductors to filter the power.. No it wont shock you because its DC current and the magnet wire is insulated with a clear glaze.

ECUPirate · 05-06-2002, 06:49 PM

ah. what are the rings w/ copper? and will they shock you?

MeltMan · 05-06-2002, 06:49 PM

look above ^

dantheman · 05-06-2002, 06:51 PM

I think you should experiment for all of us though by touching the case and licking them while the comptuer is on

ECUPirate · 05-06-2002, 06:54 PM

wow. was that there before? how'd I miss it?

Why, exactly, won't DC shock you? What if you had a 48v DC PSU?

Speaking of which... could someone reply to my other thread about the 24v PSU???

MeltMan · 05-06-2002, 06:57 PM

DC wont shock you, it will just burn you. When you get shocked, you are feeling the switch from + to - of the ac power source... To clarify, go shock yourself on a plugin, notice you feel a pulse (at 60hz) surging into you... that is the switch of + and -.

And yes... I have burnt myself with 38vDC at 15 amps... its a tingly feeling... till it starts to burn...

ECUPirate · 05-06-2002, 07:00 PM

so AC is the one that'l stop your heart/kill you then? ...unless you get ahold of a zillion DC volts and spontaneously combust..

dantheman · 05-06-2002, 07:02 PM

Actually, a whole lot of DC doesn't really hurt you, it is the whole lot of AC that does fun things like stop hearts.

ECUPirate · 05-06-2002, 07:07 PM

ever try licking a 9v battery? use your tongue to connect the two power leads... tingles like hell.

*who made up the word tingles? It sounds so gay....

UpAllNight · 05-06-2002, 07:31 PM

thanx guys....hey ECU lay off the dc voltage i think its gettin to ya man..

Obasau · 05-06-2002, 07:44 PM

i put a heatsink on my MOSFETs.
Its a KR7A, but its not getting hot at all at 1.95V. (cant get higher til my watercooling is done

)
But my casetemp is 19deg C so it cant really get that hot.

pHaestus · 05-06-2002, 08:33 PM

I have seen some Epox boards (8kha+) that would totally flake out after vmod until I cooled the mosfets (heatsinks + Arctic alumina epoxy). Don't know why, but their over currect protection seemes sensitive to the mosfet cooling. I could use a 1600+ at 2.1V and it would be fine, but the 1900+ and 2.1V would reboot. Cooled the mosfets and all was well again.

Brad · 05-07-2002, 02:52 AM

with the epox boards, once the mosfet temps go so high there will be so much resistance and voltage drop across it, this will trigger the overload protection

UpAllNight · 05-07-2002, 07:24 AM

hummm very interesting i believe this could be my problem with rebooting at 2.1 volts and anything over 1820 mhz i get reboots over and over...im looking for some old heatsinks now...

Thanx guys

DigitalChaos · 05-09-2002, 12:11 AM

the best idling program for amd would be vcool

http://vcool.occludo.net/

its FREE
does several other things... even will FORCE your cpu to idle if it is running to hot.. and will shut it down if it doesnt

you will probably have weird issues when running it as is.. so play with the options check boxes till it works right.

(ex: master read caching had to be enabled for me, or my sound would get funky and lock my computer)

but i love vcool

DigitalChaos · 05-09-2002, 12:13 AM

oh.. and for the AC vs DC talk...

the first city electrical systems were DC... this was eventually decided to be very unsafe.. and they said AC was much safer
(they would display horses and kill them with electricity to show this.. wtf)
go figure

05-06-2002, 03:16 PM	#2
WebMasta33 Cooling Savant Join Date: Dec 2001 Location: Nebraska Posts: 526	Those are all the capacitors that provide power to your CPU. I would have a 7 or 5volt fan around there. __________________ ========== --Soyo KT333 DRAGON Ultra (Platinum Edition) --AMD 1.4 @ 1.54 (11x) --768mb of PC2100 (@140FSB) --Asus v8200 GeForce3 @ 210/490 --Maxtor 40gb Quiet + 2 IBM 40gb 60GXPs (removable) + 8gb WD --Audigy --Maze 3, DD Gf3 block, 2x BIX, Eheim1250 ===========

05-06-2002, 06:35 PM	#7
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	yes those are fet's. You could just not worry about it since the mosfets are made to run at very high temperatures. If they were getting too hot, the mobo manufacturer would have heatsink/fanned em already. MOSFET's generally have a max operating temperature of 150c. You are running WELL below that mark. __________________ MeltMan Lurker Supreme!

05-06-2002, 06:46 PM	#8
ECUPirate Hottest Stank of them All Join Date: Mar 2002 Location: Washington, DC area Posts: 533	the picture is not very clear for my poor eyes.. so the mosfets are the little rings w/ exposed copper coiled around them? Will they shock you if you touch them? How about if you lick them...? kidding. seriously though. ... __________________ Does a radioactive cat have 18 half lifes? --Kenny my pimpin' rig: ...previously poorly cooled... 486DX-2 66mhz @ 75mhz, 4Mb ram, shared, 256Mb hard drive Onboard VGA, watercooled, of course 16-color monitor, labtec speakers, 28kbs USRobotics modem Windows XP (think about it) Maze 3, DDen GF3 block, Eheim 1250, econoline van HC, 1/2" hose w/ 5/8" fittings Comair 172mm fan

05-06-2002, 06:47 PM	#10
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	no mosfets are the little black squares with 2/3 contacts comming out of one side. The little ferrite cores with magnet wire around them are small inductors to filter the power.. No it wont shock you because its DC current and the magnet wire is insulated with a clear glaze. __________________ MeltMan Lurker Supreme!

05-06-2002, 06:49 PM	#11
ECUPirate Hottest Stank of them All Join Date: Mar 2002 Location: Washington, DC area Posts: 533	ah. what are the rings w/ copper? and will they shock you? __________________ Does a radioactive cat have 18 half lifes? --Kenny my pimpin' rig: ...previously poorly cooled... 486DX-2 66mhz @ 75mhz, 4Mb ram, shared, 256Mb hard drive Onboard VGA, watercooled, of course 16-color monitor, labtec speakers, 28kbs USRobotics modem Windows XP (think about it) Maze 3, DDen GF3 block, Eheim 1250, econoline van HC, 1/2" hose w/ 5/8" fittings Comair 172mm fan

05-06-2002, 03:35 PM	#3
DigitalChaos Cooling Savant Join Date: Jan 2002 Location: Waukesha, Wi Posts: 698	its not the caps making the heat... its the mosfets making the heat... the mosfets are actually using the mobo as a heatsink.. and that goes right into your caps.. or anything else close by. i would say putting small heatsinks on the mosfets (even though the wrong side is showing.. along with a small fan if that doesnt help out. a real easy way to cool that spot down is with Idling software.. if your cpu isnt running, then the mosfets dont need to supply power, and therefore you make everything happy =)

05-06-2002, 03:37 PM	#4
DigitalChaos Cooling Savant Join Date: Jan 2002 Location: Waukesha, Wi Posts: 698	now that i look at that pic again.. looks like you have an epox board (you have every piece of hareware in you sig... but the mobo ) which means you have 3 mosfets on the top of the board, and 3 on the underside of the board.. ack! have fun =)

05-06-2002, 04:28 PM	#5
dantheman Cooling Savant Join Date: Jun 2001 Posts: 152	That would be the easyest thing to do. Just go out and find a nice 386 hs and use it. Cut it to size and use some thermal epoxy. If you are able to change where some of your heat is going, those caps will not get as hot.

05-06-2002, 06:49 PM	#12
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	look above ^ __________________ MeltMan Lurker Supreme!

05-06-2002, 06:51 PM	#13
dantheman Cooling Savant Join Date: Jun 2001 Posts: 152	I think you should experiment for all of us though by touching the case and licking them while the comptuer is on

05-06-2002, 06:54 PM	#14
ECUPirate Hottest Stank of them All Join Date: Mar 2002 Location: Washington, DC area Posts: 533	wow. was that there before? how'd I miss it? Why, exactly, won't DC shock you? What if you had a 48v DC PSU? Speaking of which... could someone reply to my other thread about the 24v PSU??? __________________ Does a radioactive cat have 18 half lifes? --Kenny my pimpin' rig: ...previously poorly cooled... 486DX-2 66mhz @ 75mhz, 4Mb ram, shared, 256Mb hard drive Onboard VGA, watercooled, of course 16-color monitor, labtec speakers, 28kbs USRobotics modem Windows XP (think about it) Maze 3, DDen GF3 block, Eheim 1250, econoline van HC, 1/2" hose w/ 5/8" fittings Comair 172mm fan

05-06-2002, 06:57 PM	#15
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	DC wont shock you, it will just burn you. When you get shocked, you are feeling the switch from + to - of the ac power source... To clarify, go shock yourself on a plugin, notice you feel a pulse (at 60hz) surging into you... that is the switch of + and -. And yes... I have burnt myself with 38vDC at 15 amps... its a tingly feeling... till it starts to burn... __________________ MeltMan Lurker Supreme!

05-06-2002, 07:00 PM	#16
ECUPirate Hottest Stank of them All Join Date: Mar 2002 Location: Washington, DC area Posts: 533	so AC is the one that'l stop your heart/kill you then? ...unless you get ahold of a zillion DC volts and spontaneously combust.. __________________ Does a radioactive cat have 18 half lifes? --Kenny my pimpin' rig: ...previously poorly cooled... 486DX-2 66mhz @ 75mhz, 4Mb ram, shared, 256Mb hard drive Onboard VGA, watercooled, of course 16-color monitor, labtec speakers, 28kbs USRobotics modem Windows XP (think about it) Maze 3, DDen GF3 block, Eheim 1250, econoline van HC, 1/2" hose w/ 5/8" fittings Comair 172mm fan

05-06-2002, 07:02 PM	#17
dantheman Cooling Savant Join Date: Jun 2001 Posts: 152	Actually, a whole lot of DC doesn't really hurt you, it is the whole lot of AC that does fun things like stop hearts.

05-06-2002, 07:07 PM	#18
ECUPirate Hottest Stank of them All Join Date: Mar 2002 Location: Washington, DC area Posts: 533	ever try licking a 9v battery? use your tongue to connect the two power leads... tingles like hell. *who made up the word tingles? It sounds so gay.... __________________ Does a radioactive cat have 18 half lifes? --Kenny my pimpin' rig: ...previously poorly cooled... 486DX-2 66mhz @ 75mhz, 4Mb ram, shared, 256Mb hard drive Onboard VGA, watercooled, of course 16-color monitor, labtec speakers, 28kbs USRobotics modem Windows XP (think about it) Maze 3, DDen GF3 block, Eheim 1250, econoline van HC, 1/2" hose w/ 5/8" fittings Comair 172mm fan

05-06-2002, 07:31 PM	#19
UpAllNight Cooling Savant Join Date: Apr 2002 Location: HILLBILLY LAND Posts: 159	thanx guys....hey ECU lay off the dc voltage i think its gettin to ya man.. __________________ XP1800 @172x10.5 Maze 3..Ehiem 1250..Chevette Rad 1 120mm panaflo @7v 1" shroud All fits nicely inside my case ambient(74 F) 2.0v Core(33.5) Loaded idle(31.5c) Enermax 431 watt Antec 1030B Gainward Geforce 3 TI200 241/548 Sony CDRW Creative 52x CD Soundblaster Live

05-06-2002, 07:44 PM	#20
Obasau Cooling Neophyte Join Date: Mar 2002 Location: Munich, Germany Posts: 69	i put a heatsink on my MOSFETs. Its a KR7A, but its not getting hot at all at 1.95V. (cant get higher til my watercooling is done ) But my casetemp is 19deg C so it cant really get that hot.

05-06-2002, 08:33 PM	#21
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	I have seen some Epox boards (8kha+) that would totally flake out after vmod until I cooled the mosfets (heatsinks + Arctic alumina epoxy). Don't know why, but their over currect protection seemes sensitive to the mosfet cooling. I could use a 1600+ at 2.1V and it would be fine, but the 1900+ and 2.1V would reboot. Cooled the mosfets and all was well again.

05-07-2002, 02:52 AM	#22
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	with the epox boards, once the mosfet temps go so high there will be so much resistance and voltage drop across it, this will trigger the overload protection __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

05-07-2002, 07:24 AM	#23
UpAllNight Cooling Savant Join Date: Apr 2002 Location: HILLBILLY LAND Posts: 159	hummm very interesting i believe this could be my problem with rebooting at 2.1 volts and anything over 1820 mhz i get reboots over and over...im looking for some old heatsinks now... Thanx guys __________________ XP1800 @172x10.5 Maze 3..Ehiem 1250..Chevette Rad 1 120mm panaflo @7v 1" shroud All fits nicely inside my case ambient(74 F) 2.0v Core(33.5) Loaded idle(31.5c) Enermax 431 watt Antec 1030B Gainward Geforce 3 TI200 241/548 Sony CDRW Creative 52x CD Soundblaster Live

05-09-2002, 12:11 AM	#24
DigitalChaos Cooling Savant Join Date: Jan 2002 Location: Waukesha, Wi Posts: 698	the best idling program for amd would be vcool http://vcool.occludo.net/ its FREE does several other things... even will FORCE your cpu to idle if it is running to hot.. and will shut it down if it doesnt you will probably have weird issues when running it as is.. so play with the options check boxes till it works right. (ex: master read caching had to be enabled for me, or my sound would get funky and lock my computer) but i love vcool

05-09-2002, 12:13 AM	#25
DigitalChaos Cooling Savant Join Date: Jan 2002 Location: Waukesha, Wi Posts: 698	oh.. and for the AC vs DC talk... the first city electrical systems were DC... this was eventually decided to be very unsafe.. and they said AC was much safer (they would display horses and kill them with electricity to show this.. wtf) go figure

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