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Are motherboard tdp/w a recommendation or a requirement ??

Discussion in 'Hardware' started by robirocz28, Mar 14, 2019.

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  1. robirocz28

    robirocz28 Thread Starter

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    I have a biostar n68s3b motherboard and on the manufacturers website it states my motherboards "recommended" tdp is 95. Does this mean anything over 95 tdp will not work, lets take the phenom ii x 4 965 125. Will this cpu work on my motherboard but be above recommendation or will it not work at all. I have also seen the same model cpu in 3 different tdp versions. Also do unlocked cpu have variable tdp. For example if I change the mhz on a cpu wouldnt what increase the tdp as well? and if so would a cpu rated 95 w on its manufacturers website be accurate if the cpu is unlockable. sorry if im wording this bad but ill give it a try. lets say i put a "unlockable" 95 w cpu in my motherboard that's rated for a 95 w cpu. If i overclock it wouldn't that bring the tdp/w over 95 w and if it does wouldn't that cause interruptions on a motherboard rated for only 95 w?
     
  2. managed

    managed Trusted Advisor Spam Fighter

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    Allan
    The TDP is the 'recommended' maximum power the Cpu should run at. If that figure is exceeded, either because the Cpu itself has a higher TDP rating or it's overclocked, it can cause overheating of the Cpu and/or of the VRMs (Voltage Regulator Modules) which supply power to the Cpu.

    In your question that 965 TDP 125 Watt Cpu would work but if it runs near 100% for long enough (a few minutes) it could get hot enough to throttle back to a slower speed or even shut down the PC. Plus it could overheat the VRMs which would damage the motherboard.

    Basically you need a motherboard that can supply enough power to the Cpu and Cpu cooling that can keep the Cpu temperature low enough to stop the Cpu from slowing down or switching the PC off.

    Some Cpus have different versions with different TDP ratings.

    See here for a list of Cpus compatible with your motherboard (all are TDP 95W or less) :-
    http://www.cpu-upgrade.com/mb-Biostar/N68S3B_6.x.html
     
    robirocz28 likes this.
  3. robirocz28

    robirocz28 Thread Starter

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    Thank you for your time, i didnt see the phenom ii x4 960 t which i seen online has a 95 w version, there are also some phenom ii x4 b95's i seen. the 2 things id like to do with cpu is 1. gaming and 2. hashcat. i beleive multi threaded performance is more important then single threaded performance when it comes to gaming, but hashcat im not sure. i may be wrong. i want a cpu that will match or exceed the performance of my dell q9650 cpu, i am currently running a phenom ii x4 810.
     
  4. crjdriver

    crjdriver Moderator

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    Many years ago I had a biostar board that was limited to something like 100W or whatever. I installed a 125W processor and there was no problem.
    Do understand that you may fry the board, fry a VR, etc. If you do, there is no one to blame other than yourself.
    In short, up to you. You can try and install the processor and it will [probably] work ok. Just be aware that you may fry the system.
     
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  5. robirocz28

    robirocz28 Thread Starter

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    i increased the amount of fans to keep it running cooler, but that helps temp but not so much over whelming current. What is the difference of a 95 w rated mobo and a 125 w mobo. are there better quality material, more fans, or even differnt type of tansistors. im curios as to what factors make 1 board 95 w and another board 125 w. is it quality of material, differnt layout and desighn or something more simple like better air flow and fan ports?
     
  6. crjdriver

    crjdriver Moderator

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    In short, yes. Higher end boards have better power regulation, heavy duty capacitors, better chipset cooling, etc, etc. That is why they can support higher pw processors.
     
    Last edited: Mar 24, 2019 at 11:12 AM
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