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Active Memory Cooling and other issues.... - Page 3

post #21 of 40
Thread Starter 
Yeah mine run at 3.2v @ 1.5-2-2-5 DDR450

Im a bit aprehensive on increasing the voltage anymore until I get a cooler for them
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post #22 of 40
I use an AMD stock fan that Max posted, however I use only 1. A new cooler is going on the X-mas list.
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post #23 of 40
Thread Starter 
Well im back after an extended break in Ireland

Well I got round to trying out a few ideas for the active cooling.

After realising that if I remove the fan guard it gives me enough clearance to fit a standard 80mmx25mm fan in the space available (Doh)

Pic attached

It will do for the time being until I decide on other methods.

EDIT: Think its time to test at higher voltages than 3.2v that it currently works at.
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post #24 of 40
Thread Starter 
Well time for an update (if anyone is interested )

New layout incorporating active memory cooling via a 80mm x 25mm Quiet Fan running at 2000RPM

Ive dropped the graphics card to the lower PCI-e lane to stop it dumping hot exhaust air onto my NB fan.

Overall temp improvements:
NB Temp: original 50°C now running at 45°C (Under 100% CPU load) Figure taken from Smartguardian

5°C overall temperature improvement (not too bad)

BH-5 Memory: original without fan 50°C now running at 38°C (after 10 loops of memtest) Temperature verified using a thermocouple accurate to +/- 2°C which has been inserted between heatspreader and PCB at the fan dead spot.

12°C overall improvement (excellent IMO)

Now running the system at 10x250MHz (2.5GHz) with 3.3v @ 2-2-2-5 1T (DDR500)

Oh I wish I did not have this crap stepping CPU
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post #25 of 40
good improvement in temps. Nice work
    
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post #26 of 40
Thread Starter 
Quote:
Originally Posted by smallia16 View Post
good improvement in temps. Nice work
Thanks

Im pretty impressed myself.

Not sure if I can get more than DDR500 out of these modules but will give it a try
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post #27 of 40
Thread Starter 
Update (again)

Well I have tried to push the memory modules higher.

255MHz @ 3.3v is fine and passes memtest, no problems
260MHz @ 3.3v Fails memtest as does 260MHz at 3.4v

Im reluctant to increase the voltage anymore since the 0.1v increase still did not stabilise the memory. DDR510 @ 2-2-2-5 1T (3.3v) seems to be the limit so far

What do you guys think?

Leave as is, or increase voltage even more?
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post #28 of 40
Quote:
Originally Posted by gonX View Post
It is necessary when you run +3.3V on DDR1, and +2.2 w. DDR2
I'm running my corsair's at 2.35v right now without any active cooling. am I going to run into problems?
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post #29 of 40
Quote:
Originally Posted by MjrTom View Post
Came across this little gem in my search of online retailers



http://www.overclockers.co.uk/showpr...odid=MY-123-CS

It is designed for the purposes of cooling the new high voltage corsair Dominator DDR2 modules but thought it would make good cooling for both DDR2 and older BH-5 type memory modules which require higher than JDEC SPD specs.

If I can find a way to fit this around my Thermalright SI-120 or replace the HSF for something that will fit in conjunction with the Corsair cooler.

At this moment in time I dare not put more than 3.2v through my BH-5 as they get toasty.

This is how much space I have, bearing in mind the fan is 80mm and the motherboard is not mounted in a case at this point.


Any CPU coolers that will not impede the memory modules or the fitting of the corsair fan but still perform as well as the SI-120 or better. Jesz I wish I had a WC block on that CPU, it would cut out all this hassle.

What are your thoughts guys?
how did you get that little clip for your fan?
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post #30 of 40
Thread Starter 
Quote:
Originally Posted by rx7speed View Post
how did you get that little clip for your fan?
It is the bracing strut for the SI-120 CPU cooler

Here is another picture taken from a review which shows it more clearly. It is the brace on the left side of the picture: http://www.bigbruin.com/reviews05/th...0/large/32.jpg

It fortunately forms a useful "ledge" to sit the 80mm fan on when I get hold of some bluetac or similar i will tac it into place.

EDIT:
Quote:
Originally Posted by rx7speed View Post
I'm running my corsair's at 2.35v right now without any active cooling. am I going to run into problems?
Well im not sure about DDR2 since i have not had much first hand experience in it. Are they hot to the touch when under load?
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