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which rad can control 1.55V full load i7 920/950?

post #1 of 6
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generally speaking, for a very simple loop, if i overclock a 920/950 to 1.55V/4.5GHz, how many radiator do i need based on your experience?
post #2 of 6
I would run a 240 or maybe a 360 radiator and be happy with the results.... only the CPU on the loop of course.

Figure out the BTUs and you will see that a 360 should be over kill



FYI the 1.55v will be doom for that chip
post #3 of 6
LOL! ummmm, well it depends on what youll be running at 4.5ghz. ive got 2 240mm rads and a 360mm rad and that keeps my i7 930 at 4.5ghz under 80*C in 3Dmark Vantage and the idle is 50*C, but then again i need nowhere near 1.55v to keep 4.5ghz stable. if your benching with it, and youll just do 2 or 3 bench mark runs then turn your comp off and let it cool down then 2 360mm rads would do fine. if your wanting to game at 4.5ghz youll have no hope... well you could.. but i would hate to see the temps of a i7 920 with Vcore of 1.55v running a game like crysis for 3 hours... fried eggs and bacon anyone?
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post #4 of 6
Quote:
Originally Posted by Kal777 View Post
LOL! ummmm, well it depends on what youll be running at 4.5ghz. ive got 2 240mm rads and a 360mm rad and that keeps my i7 930 at 4.5ghz under 80*C in 3Dmark Vantage and the idle is 50*C, but then again i need nowhere near 1.55v to keep 4.5ghz stable. if your benching with it, and youll just do 2 or 3 bench mark runs then turn your comp off and let it cool down then 2 360mm rads would do fine. if your wanting to game at 4.5ghz youll have no hope... well you could.. but i would hate to see the temps of a i7 920 with Vcore of 1.55v running a game like crysis for 3 hours... fried eggs and bacon anyone?
wait.... you have 2 240mm rads and a 360mm rad just for your CPU? and it still gets to 80c? then you need better cooling, because more radiators will not help your problem if it has come to that.
post #5 of 6
Like said above, you're asking for trouble if that's 24/7 voltage...

But I would go with a decent 360 rad with medium speed fans and shrouds if you want quiet or a good 240 rad with high speed fans and shrouds or push/pull if you don't care about noise.

Quote:
Originally Posted by nickbaldwin86 View Post
wait.... you have 2 240mm rads and a 360mm rad just for your CPU? and it still gets to 80c? then you need better cooling, because more radiators will not help your problem if it has come to that.
Agreed. Something's definitely wrong there. I have a single MCR320-QP and single HWLabs Black Ice Pro 120 X-Flow cooling an i7 @ 4.2GHz 1.344V (HT off) and GTX470 @ 900MHz core 1.175V, and my temps barely pass 60*C while gaming on the CPU, and never go above 47*C on the GPU (all with my Delta's at medium/low speed and a 26*C ambient).
Edited by c00lkatz - 5/4/11 at 9:00pm
     
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post #6 of 6
Quote:
Originally Posted by newpppp View Post
generally speaking, for a very simple loop, if i overclock a 920/950 to 1.55V/4.5GHz, how many radiator do i need based on your experience?
Well, you need at least 1*120mm section on radiator per block.

I would get at least a good 240 radiator. (HWLabs GTXtreme 240, HWLabs SR-1 240 or XSPC RX240)(Maybe a Thermochill TA...) If you have room I would get a 360 version of one of those for future if you plan on expanding.

HWLabs SR-1 series - ~800 and less RPM fans.
HWLabs GTXtreme series - These radiators have high FPI (fins per inch) and they perform good with fans that have high static pressure, such as the Scythe Gentle Typhoon AP-15's or any fan that is over ~1500RPM.
XSPC RX series - ~850 - 1450RPM fans.
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