Modded my Parhelia.....

[Dr Mordrid]

Well...I finally modded my Parhelia a bit. So much for using PCI-1 :-)

I cut four ramsinks out of 2 identical CPU HS's I had laying around. Each is 12mm wide x 27mm long x 19 mm high (18 vertical legs: 3 rows of 6) and bridges two memory chips. They are bonded using a very thin layer of Arctic Alumina 2 part heat sink adhesive.

The standard GPU heat sink is still in place, but a higher throughput 1000 ma 50 mm fan is now doing the ventilation duties. This fan's current draw is nearly 8x that of the one that came with the Parhelia (130 ma) so I gave it a new power connector that goes direct to the system P/S.

Here's the result (pardon the poor lighting);



Here you get a closer look. I'm cutting the sensor wire for the new fan as it will go unused (yes Greebe, it got a piece of shrink tubing



Sorry, but I cannot post any benches or settings as the DD build I'm using isn't public and under NDA.....but I will say that it was well worth the effort

Dr. Mordrid

[zerver]

1000mA, whoa that fan must be noisy.

/ Z

[Dr Mordrid]

Nope, not at all. The blades have proper shapes and there is a rather small space between the blade tip and the duct, both of which are big factors in noise generation. So is the RPM at which the fans runs, and this one doesn't pretend to be an airplane propulsion system like some coolers I could mention

Dr. Mordrid

[Greebe]

Those ramsinks look almost identical to mine Doc, but a tad taller at 25mm and black.

I have a 54mm x 50mm x 25mm HS on the gpu with a Papst 60mm 32cfm fan mounted so it blows edgewise (with duct work) across the top and bottom at a ~25%/75% flow respectively.

Works good but the Papst fan is the loudest thing in my system... should have a custom made waterjacket done in a couple of days so I can eliminate that noise

[Dr Mordrid]

Greebe:

how much difficulty did you have removing the GPU heat sink? That's the only thing that kept me from sticking something bigger on there.

Dr. Mordrid

[Kruzin]

A 10lb sledge hammer, and wood splitting wedge should get the job done

[{PainCresT}DAn]

Use plastic tools to get glued on heatsinks off and do it at the corners of the heats sink.... I did this to my ATI Radeon 8500 Retail and now with the crystal orb (and a little artic silver 3 ) on I'll tell ya the GPU sits about 10 degrees lower than before.

[{PainCresT}DAn]

forgot to mention BE CAREFULL!!! don't do it near any surface mount component... try to find a bare PCB area to pry the sink off.

[Tempest]

Sticking the graphics card into a freezer for a few minutes before the operation can also make the heatsink to pop off easier.

[GT98]

Re: Modded my Parhelia.....

Originally posted by Dr Mordrid
Well...I finally modded my Parhelia a bit. So much for using PCI-1 :-)

Sorry, but I cannot post any benches or settings as the DD build I'm using isn't public and under NDA.....but I will say that it was well worth the effort

Dr. Mordrid

Can you tell us if it went to smooth to really frikcen smooth?

[frankymail]

Well, in my case, to remove the heatsink, I insert a small razor blade to make a small space between the heatsink and GPU (note: its much easier when it's slightly hot, so I heated it a bit (not too much...) with a hair dryer, then inserted an old video club member card and pried both apart using a pretty sharp flat-tip screwdriver. I put the Intel retail heatsink-fan than came with my Tualatin, added a 50x50x6mm copper plate screwed+artic-silver-epoxyed to the heatsink, bolted the assembly on the card using nylon bolts and nuts, and served the whole thing with mustard on a kaiser bread :P Maybe I'll also add some ramsinks , but that's not totally sure, as it's easy to see i've tampered with the card (if something goes wrong, I can always put back the original heatsink and RMA it back, but if I epoxy ramsinks on the memory chips and screw it up, i'm stuck with a $700 can doorstop/paperweight... Besides, the memory is rated at 300 MHz DDR without any cooling.

If you have Intel retail heatsink for the P3 or higher laying around, I HIGHLY suggest you use this, because it is pretty light (all aluminum) so it won'T put too much stree on the card once installed.


Addendum: I strongly suggest you do NOT freeze the card to ease the HSF removal process; instead, HEAT it using a hair-dryer. freezing the card actually makes the glue STRONGER but less tensile. So it will require more force to remove, but at one point the glue will break and the heatsink will go flying in the room. Heating it will soften the glue, so even though it won't pop off instantly, it will be less dangerous for the card. But that only my advice... If you want to take additional risks with your BRAND NEW, VERY EXPENSIVE video card, it's you decision.

[Edward]

Re: Re: Modded my Parhelia.....

Originally posted by GT98


Can you tell us if it went to smooth to really frikcen smooth?

Or how much oc %

[pgde]

Other than a direct temperature reading, is there anyway to measure the temperature (and presumably temperature reduction)?

[Greebe]

Doc, et al.

Remove fan, lift up the center retaining pins, heat with a hair drier for a minute and it comes right off. Parhelia's HS is bonded by a brownish black thermal wax.

[thop]

hmm since there would be no reason to mod your P if you didn't intend to o/c it can i assume that the BBz already got some o/c tool but are not allowed to talk about it yet?