Printable View
Will the new Thermochill PA160 radiator cool the quad core by itself? I plan on running two seperate loops. With one PA 120.3 running the NB and two 8800GTX on it and then having the CPU run on its seperate loop using the PA160. Or another option is to go with PA120.2 with the PA120.3.
Or will the PA120.3 run all three by itself no problems and two rads is overkill? Money is no object. Ive got an order in for the UFO Horizon case coming.
yes for sure two rad is an overkill
just use ur P120.3 and use 6 silent fans on it and that IMHO is enough
its for your consideration. Runnin two loops can get messy depending on your case. As stated, a TC PA120.3 has THE power to cool it all. If you want to go extreme, make a seperate cpu-only loop with a PA120.2 (better than PA160 , but depends on space) or even a 120.3 for only a few degrees improvement and much higher cost. It would be better if you would take a picture of your case and then draw the situation, to see what would be the best :toast:
Nope, the PA160 won't cool a quadcore by itself. However, if you add a fan to it it might... and it's the fan that determines whether it will cool it and how much it will cool it.
The hint there being, state the fan you intend to use.
http://www.thermochill.com/PATesting...lowrateLPM.jpg
Pf H = Panaflo FBA12G12-H1A - 105cfm, 6.8mmH2O, 41.5dBA
1212M = Delta WFB1212M - 72.4cfm, 3.4mmH2O, 34dBA
Nexus = Nexus D12SL-12 - 36.8cfm, 22.8dBA
Quadcore = 130w @ stock = 253w @ 3.6Ghz with 1.5v
Now that is funny! :DQuote:
Originally Posted by Marci
In regards to the PA160 cooling a quad, something along the lines of a 130cfm fan would be required to be sufficient?
Hmm, anyone know the heat output of an 8800gtx on load overclocked? I'm planning to put 2 in sli and cooled by a PA160, but can't seem to find the heat output to see if it could even handle it. I would be using EK's fullcover blocks, a YL 70.5cfm fan, and a ddc-02 with petra's top. Think I should combine my two loops instead?
to cool 2 8800GTX u sure need mroe than a single P160, or atleast a P160 with the loudest 120mm fan
My case will be the UFO Horizon caseQuote:
Originally Posted by Aerosupra
Thanks guys for chiming in and answering my questions.
Marci, thanks for answering, yeah I meant the PA160 with a fan but I'll try the PA120.3 with the shroud and three yate loons 70.3 cfms at 35 db and see if it can do the job. Would adding three additional fans to the PA120.3 be better significantly, like sandwiching the radiator betwee two rows of fans?
Power consumption at stock is roughly 150w per card. Overclocked can rise to 200w+. Max Power Consumption = Max Heatdump.Quote:
anyone know the heat output of an 8800gtx on load overclocked?
Pair of 8800GTX in SLI at full load overclocked = 400w+
http://www.thermochill.com/PATesting...lowrateLPM.jpg
70cfm fans won't cut it and keep a decent air > coolant differential. Temps will be no better than aircooling. 70cfm will shift 225w of heat at 10degC air > coolant differential. To shift 400w+ of heat would result in coolant temps at ambient + 20ish deg C (ie: a 20ish deg differential), so 40 deg C water (assuming ambient is around 20 to start with).
Coolant_temp + ((heatload_per_card x C/W_of_waterblock)x2) = GPU temp(roughly)
PA120.2 for JUST the video cards oc'd at full load in SLI, with 100cfm fans, will give "good" temps.
PA120.3 with 50cfm fans would do "nicely".#
Now all you need is to talk GPU Block manufacturers into paying someone to independantly calc the c/w ratings of their blocks, all on the same testbench (preferably BillA's, as then would all be consistent to PA Series radiator testing.)
Job for you as you have the contacts after all MarciQuote:
Originally Posted by Marci
Er... no. Testing costs money. If other companies want items tested, THEY sort it and pay for it. Contact details are at Bill's site - http://www.thermal-management-testing.com
I look after my own business and choose to have our products' performance independantly qualified, and pay for the priviledge. If DD, EK etc want stuff testing, that's up to them... their choice, their money, their business. Nothing at all to do with me.
So Marci if I am running my 8800GTX SLI OC and Quad core OC you are suggesting two radiators correct? the PA120.2 just for the video cards and PA120.3 for the cpu and 680i northbridge block. I just want to make sure I ordered everything I need before assembly. If you think one radiator could handle 800-900 watts that would save me some money. I figure the Quad core OC 3.6ghz 1.5v is about 290watts and two 8800gtx sli OC 500watts and the 680i northbridge is about 200 watts. I was going to use the medium speed panaflows which are 86cfm at 35dbQuote:
Originally Posted by Marci
680i northbridge is most definitely NOT 200w at all... nothing NEAR that. Would be amazed if it's more than 100w... in fact I'd be equally amazed if it was more than 70w.
But yes, with Dual8800GTX oc'd and Quadcore oc'd, I'd definitely recommend either multiple rads, or single 120.3 rad with damn strong fans on it. And I'd go 120.3 on the GPUs, and 120.2 on the CPU/NB meself... put the biggest heatload on the biggest rad.
Sorry to hijack but the question is kind of related - what about a 6600 @ 1.45ish and an O/Ced single 8800 with the NB? I was thinking a 120.2 would be comfortable, but some of your comments above made me rethink.Quote:
Originally Posted by Marci
6600@1.45 at what speeds?
Assuming 3.6Ghz...
CPU heatload = 131w
8800GTX@stock heatload = 145w. Assume 200w oc'd.
Pump (assuming DDC) heatdump = 18w
Total heatload = 349w
Flowrate = between 5 & 6lpm
http://www.thermochill.com/PATesting...lowrateLPM.jpg
Above shows to cool to 10 deg C Air > Coolant Differential would require Delta1212M fans at 12v or similar (72.4cfm, 3.4mmH2O, 34dBA)
Add another 50w or so for Northbridge = 400w total heatload = Panaflo FBA12G12-H1A - 105cfm, 6.8mmH2O, 41.5dBA or equivalent.
Contact mobo manufacturer if you want a more accurate heatload figure for Northbridge.
(Plot heatload up the vertical, plot flowrate on the horizontal. Where the 2 lines cross, look at the nearest fan curve above and below it, guesstimate what CFM you need based on those two curves. If a curve is bang on where they cross, then refer to key on graph and fan specs at top of http://www.thermochill.com/PATesting/)
Thanks for the quick response Marci, your assumptions were spot on. That's actually a lot more airflow required than I expected (I currently run Nexus' @ 12v in a wind tunnel configuration over a Ninja) but not too bad. Thanks for the help. :)Quote:
Originally Posted by Marci
Less airflow will result in an increased differential, so with lower CFM than those plotted, you'd simply see higher temps. With higher CFM, differential decreases, so you'd see lower temps.
Understood -- looking forward to having a play when I get the time! Pull out the dremel etc ;)Quote:
Originally Posted by Marci
Marci, could you please also post the graph using same parameters/fans for PA120.3? :p:
I'd like to see it for comparison.
Thank you!
ALL graphs for all our PA Series rads can be found at http://www.thermochill.com/PATesting/, or by following the "TECHNICAL DATA" link from each radiator's page at http://www.thermochill.com
http://www.thermochill.com/PATesting...lowrateLPM.jpg
310w = Nexus @ 12v (around 40cfm)
350w = Delta1212M @ 7v (around 50cfm)
400w = Panaflo FBA12G12-H1A @ 7v (around 60cfm)
Quote:
Originally Posted by Marci
Thanks Marci just placed another order for the PA120.2 and will put the cpu and nb on the that rad. Ill run the video cards on the 120.3. I am trying to go for less noise this build so two rads should help cut the noise down with lower cfm fans. These thermochill rads are sold out everywhere very tough to find but I got one.
Quote:
Originally Posted by omni123
That sounds like about 300-400watts you need to cool to 10C air to coolant ratio so the PA120.2 would handle the load but you will have to have higher cfm and higher db to cool it to 10C air/coolant temps. If you can handle your cpu and gpu at 20C ambient air to/coolant temps then your fans dont have to be as high and noise is less.