Jimbo Mahoney Posted June 3, 2005 Posted June 3, 2005 Has anyone done this yet? I know the clips holding them on are soldered..... I plan to remove them this weekend to fit a MOSFET waterblock and just wanted to hear of people's experiences. I've posted this over at XS too, as they are just the sort of people to have done this. Thanks Quote Share this post Link to post Share on other sites More sharing options...
LoN3R Posted June 3, 2005 Posted June 3, 2005 isnt it funna be a little hard to W/C these fets and jus add resistance to your loop were not talking about an ATI board here with that killer layout and speaking of that bigtoe didnt get any onboard temps higher than 35 C Quote Share this post Link to post Share on other sites More sharing options...
Angry_Games Posted June 3, 2005 Posted June 3, 2005 removing the mosfet heatsinks = voids your warranty (keep that in mind) Quote Share this post Link to post Share on other sites More sharing options...
Jimbo Mahoney Posted June 4, 2005 Posted June 4, 2005 isnt it funna be a little hard to W/C these fets and jus add resistance to your loop were not talking about an ATI board here with that killer layout and speaking of that bigtoe didnt get any onboard temps higher than 35 C I get temps in the 60's because I don't have any fans in the case. Right now I have a 120mm fan over them and they are down in the mid 30's. Adding a MOSFET waterblock will reduce my flowrate from 5lpm to 4.5 lpm (I've already tested the whole loop). I have two AQX 50z in series @ 13v putting out more than 20 feet of head. I bought them specifically for a relatively restrictive loop like I'm running. The MOSFET waterblock is nicely sized to go over these DFI 'fets. Should be good. I'll post back when I'm done, or if I fail somehow. removing the mosfet heatsinks = voids your warranty (keep that in mind) Hehe, warranty. :shake: :nod: Quote Share this post Link to post Share on other sites More sharing options...
LoN3R Posted June 4, 2005 Posted June 4, 2005 I get temps in the 60's because I don't have any fans in the case. Right now I have a 120mm fan over them and they are down in the mid 30's. Adding a MOSFET waterblock will reduce my flowrate from 5lpm to 4.5 lpm (I've already tested the whole loop). I have two AQX 50z in series @ 13v putting out more than 20 feet of head. I bought them specifically for a relatively restrictive loop like I'm running. The MOSFET waterblock is nicely sized to go over these DFI 'fets. Should be good. I'll post back when I'm done, or if I fail somehow. Hehe, warranty. :shake: :nod: damn i have a AQX in my new case im building ... guess u haev it planned out . Quote Share this post Link to post Share on other sites More sharing options...
Jimbo Mahoney Posted June 4, 2005 Posted June 4, 2005 OK, I removed the sinks. They are a bit fiddly to do since there are two prongs, which are soldered in on either side. I melted one side and pulled the sink to the other side to pull that prong out and repeated with the other side. My advice if you are going to do this: keep the holes free of solder so you can use them to secure your MOSFET waterblock. Since the 'fets aren't exactly high powered (not like a GPU or CPU) I just used normal silicon heat transfer compound and put a decent sized blob on the top of each 'fet then put my waterblock on and used the middle two holes to pull a cable-tie tight against the block. Basically, it's being held down by a cable tie and making contact with the silicon compound. With the air temp at 19'C, I'm getting PWM sensor readings of 31'C with the system at load. With a 120mm fan (medium speed, medium loudness) I was getting about 36'C. Without ANY cooling, I was getting about 60'C. Summary - I really wouldn't bother doing this if you are happy to point a fan at the 'fets to cool them. That will be more than adequate. As you can see, watercooling them doesn't drop temps that much more, but for me, eliminates the need to have a fan pointed at them (and also drops the temps a few degrees more). Whether or not this will help overclocking - I doubt it. It might stabilise the Vcore (there's a nice review of a MOSFET waterblock where the Vcore is a lot more stable when watercooled vs. air). My main concern is having as few fans as possible in the system (which is an open desktop case anyway). I have 4 x 120mm fans (variable speed from 1.25v -> 11v, then full-speed 13v) and an OCZ 520 Powerstream PSU. Since the case is open, the PSU gets room-temp air all the time, so stays nice and quiet. Hope that helps others void their warranties! :drool: Quote Share this post Link to post Share on other sites More sharing options...
LoN3R Posted June 4, 2005 Posted June 4, 2005 what kind of iron did u use to remove them Quote Share this post Link to post Share on other sites More sharing options...
SaFrOuT Posted June 4, 2005 Posted June 4, 2005 can u please show us some pictures Quote Share this post Link to post Share on other sites More sharing options...
Jimbo Mahoney Posted June 4, 2005 Posted June 4, 2005 I just used a normal soldering iron. I have a fairly fine tip on it, but nothing out of the ordinary. Re: pics - what pics would you like? EDIT - This is about the best you'll get: Quote Share this post Link to post Share on other sites More sharing options...
Jimbo Mahoney Posted June 4, 2005 Posted June 4, 2005 Holy moly the voltage is stable! @ 1.3 x 123% (1.552 actual), it's a totally flat line! (Using Speedfan for voltage graphs and CPU-Z for actual 3 d.p. voltage reading). Quote Share this post Link to post Share on other sites More sharing options...
Jimbo Mahoney Posted June 5, 2005 Posted June 5, 2005 I'm now 17 hours Prime stable @ 2.826 Ghz! That means that either the CPU has burnt it now or watercooling the mosfets has really stabilised the CPU! When I was aircooling the 'fets, I couldn't get much more than about 2.7 - 2.75Ghz prime stable! It could be a better mount of the CPU waterblock though, as the temps seem a couple of degrees lower. I had to dismantle the whole system to mod the mobo. Quote Share this post Link to post Share on other sites More sharing options...
SaFrOuT Posted June 5, 2005 Posted June 5, 2005 from where did u get this watreblock ?? and plz plz i need mroe clear pictures if u can Quote Share this post Link to post Share on other sites More sharing options...
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