Can I install i7 3770k in a motherboard with TDP 35W ?

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Kakarot07

Kakarot07

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I have HP Pavillion p2-1257in Desktop which has a mini-ITX mobo - Pegatron 2AE2, chipset is Intel H61 Socket LGA 1155. Due to some reasons I can't build a new rig but this system is killing me, I have already replaced the stock RAM by 8 x2 hyperX fury DDR3 1866 Mhz and was planning to upgrade my processor. There an external 90w laptop like power supply which I was going to change to 200w and change the stock cooler to Thermalright True Spirit 120M (BW) Rev. A, modding it using two EK-Furious Vardar FF5-120mm (3000rpm) fan for push and pull configuration by using EK-Cable Y-Splitter 3-Fan PWM splitter so I will connect both the fans to the splits with no RPM sensing and both of them will run at their full potential for max cooling. One thing more I can do for the max cooling is use EK-TIM Indigo XS - Intel 115x thermal interface, this is all I can thing of right now for max cooling. After so much of planning and research I came across a problem of TDP that is "TDP: 35 W (Only 35 W CPUs are supported with this motherboard)" please help, can I install i7 3770K in this mobo under such conditions.

P.S. The power supply upgrade is for the processor only, it might help the Vardar too but mainly its for the CPU


Stock Configuration : http://support.hp.com/us-en/product/HP-Pavilion-p2-1200-Desktop-PC-series/5258516/model/5269239/document/c03441074/?sku=H1P85AA

Mobo specs : http://support.hp.com/us-en/product/HP-Pavilion-p2-1200-Desktop-PC-series/5258516/model/5269239/document/c03333871

i7 3770k specs : http://ark.intel.com/products/65523/Intel-Core-i7-3770K-Processor-8M-Cache-up-to-3_90-GHz

Thermalright TRUE Spirit 120M(BW) Rev.A : http://www.thermalright.com/html/products/cpu_cooler/true_spirit_120m_bw_reva.html?panel=1

EK-Furious Vardar FF5-120mm (3000rpm) fan : https://www.ekwb.com/shop/ek-furious-vardar-ff5-120-3000rpm

Cable Splitter : https://www.ekwb.com/shop/ek-cable-y-splitter-3-fan-pwm-10cm

Any help is very much appreciated.



Update : Yes I can but it will underperform a little bit

Later update : No It won't work, it's not about the power, it's about the heat and the mobo is shit and it could even kill the cpu also.
For more info go to http://www.tomshardware.com/answers/id-3194534/upgrading.html
 
Solution
Ecky
This is a chart of the minimum required voltage for stability at various clockspeeds for my CPU:

OGdTJ0F.png



Here's how many watts it draws at various frequencies, using the minimum voltage:

mMBmP2A.png



As you can see, power consumption really gets out of hand around 3.5ghz, which "coincidentally" is around the highest non-turbo frequency you see on 22nm CPUs, aside from the 4790K, which is a notoriously power hungry and hot Intel CPU.
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Ecky

Ecky

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Do not use Indigo Extreme with the True Spirit. The gallium in it will react with the aluminum baseplate holding the heatpipes and disintegrate it.

Other than that, chances are fair that it will at least boot, provided you use the correct power brick. If the 3770K doesn't work (or is unstable), you might try a 65w 3770s or 45w 3770t, though if that board has voltage control, it's very likely you could get the 3770K down to sub-50w operation even at stock clocks.
 
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Ecky

Ecky

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I should add that, with undervolting, I was able to get my 3570K down to ~35w operation at 3.3ghz even when running Prime95 with AVX instructions on all 4 cores. Hyperthreading will increase that a bit, but I can give you some more ballpark figures if they'll help in any way.
 
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Kakarot07

Kakarot07

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Thanks for the Indigo Extreme warning, so I should be using a thermal compound and if that board has voltage control then the 3770K would not be able to work at it's full potential and there is also a chance of not having any problem accept for the underperformance.
 
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Kakarot07

Kakarot07

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It would be very helpful and nice of you if you could.
 
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Ecky

Ecky

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This is a chart of the minimum required voltage for stability at various clockspeeds for my CPU:

OGdTJ0F.png



Here's how many watts it draws at various frequencies, using the minimum voltage:

mMBmP2A.png



As you can see, power consumption really gets out of hand around 3.5ghz, which "coincidentally" is around the highest non-turbo frequency you see on 22nm CPUs, aside from the 4790K, which is a notoriously power hungry and hot Intel CPU.
 
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Solution
Kakarot07

Kakarot07

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I'll be using a 200-240w power brick I guess that should do the trick if my mobo doesn't has a voltage limiter
 
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Kakarot07

Kakarot07

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I realised something just now thanks to you ECKY the thing is that I won't be able to overclock the CPU and according to the graph it shows its around 40w when it'll use the 3.5Mhz, I guess that narrows the chance of failure as my cooling is powerful enough to maintain the difference. Correct me if I am wrong.
 
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Ecky

Ecky

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There's almost certainly some safety margin built into the power circuitry in the motherboard, but the only way to know for sure is to try it. An "S" or "T" CPU is more likely to run without issues due to slightly lower turbo bins and base clocks.
 
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Kakarot07

Kakarot07

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If I wanted to run the T version, I would have gone for i53470t, i think its better choice in this case but I want to take my PC to the limit after which it can't be upgraded.
 
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