Hi folks,
Just yesterday I did my first OC - followed the guide from Linus Tech Tips YouTube video since it's the same as my CPU. It went well, but I have a few questions that I'd love some feedback on.
My system:
Intel i7-5820k
ASUS x99-A
Noctua NH-D15 air cooler
Corsair RM750i PSU
32 GB Corsair Vengeance Lpx DDR4-2666MHZ (8 x 4GB sticks)
GTX 660
2 HDDs, 2SSDs, 2 external drives
I leave my system on all day and use it most of the day, and I also do a lot of video work (editing in Premiere, mograph in AE, compositing in Nuke, CG in C4D, simulations in RealFlow, etc.) which is why I went for a system with a lot of RAM and a 6-core CPU.
QUESTIONS:
1) I recently overclocked the system and, following Linus' guide, started off with the CPU core at 45 and the voltage at 1.3. I ran the AIDA64 test and had a couple cores touch the low 80s - I understand that to be not great.
Q: Is it considered unadvisable to keep these settings just if the CPU touches the low 80s, or if it AVERAGES in the 80s? In the former, I might as well keep it at 45 and 1.3, otherwise I'll have to lower it, especially given the long render times I sometimes do on the machine.
2) Deciding I wanted to try some settings where the AIDA64 stress test doesn't even touch the 80s, I set the voltage to 1.25 and kept the CPU core at 45. I ran AIDA again and now the temps were maxing out in the high 70s, I think one core might have hit 80. I understand this to be safe.
Q: If I can keep the CPU core at 45 (so the CPU runs at 4.5mhz), why not just always keep a lower voltage to keep it cooler? Why do 1.3 when 1.25 seems to work fine? For that matter, why not keep lowering the voltage? 1.1? 1.0? I assume at those lower voltages it won't be able to run at 45 - but given that I could run it at that, is it safe to leave the voltage at 1.25?
3) Deciding to leave the system at 1.25v, I next turned on the XMP ram profile at 2666 - this changed the cpu strap to 125. Deciding to play it safe, I put the CPU core at 35 (35 x 125 = 4,375). Ran AIDA again and the temps averaged in the 70s, one core hit a max of 80.
Q: I'd rather stay with a slightly lower Mhz and know I'm not risking anything with my temps - are these settings good for my "final" settings?
4) Until my OC I've never heard my Corsair RM750i fan boot up - it only does it when it's under a certain percentage of output. Previously the fan was never on, even during 100% CPU-utilization Cinema4d renders, which I would sometimes run for 12+ hours. Given that the fan now DOES turn on with my OC settings, is it going to be safe if I continue doing long 12+ hour, 100% CPU renders? Is this safe for consistent use? (Say, one or two long renders a week for the next few years?)
FINALLY - QUESTION IN TITLE
5) I did a bit of Googling and it seems that the XMP profile for the RAM makes little to no difference - 2-5% in a few cases, in some cases no difference. Is it better to just leave the RAM XMP off and know I can boost my CPU core speed a bit to get my MHZ up from 4.375 to 4.5, both at 1.25v? Then again, maybe I won't even notice the difference for the ran RAM at 2666 instead of 2111 in something like After Effects?
Any advice would be appreciated. Thanks!
Just yesterday I did my first OC - followed the guide from Linus Tech Tips YouTube video since it's the same as my CPU. It went well, but I have a few questions that I'd love some feedback on.
My system:
Intel i7-5820k
ASUS x99-A
Noctua NH-D15 air cooler
Corsair RM750i PSU
32 GB Corsair Vengeance Lpx DDR4-2666MHZ (8 x 4GB sticks)
GTX 660
2 HDDs, 2SSDs, 2 external drives
I leave my system on all day and use it most of the day, and I also do a lot of video work (editing in Premiere, mograph in AE, compositing in Nuke, CG in C4D, simulations in RealFlow, etc.) which is why I went for a system with a lot of RAM and a 6-core CPU.
QUESTIONS:
1) I recently overclocked the system and, following Linus' guide, started off with the CPU core at 45 and the voltage at 1.3. I ran the AIDA64 test and had a couple cores touch the low 80s - I understand that to be not great.
Q: Is it considered unadvisable to keep these settings just if the CPU touches the low 80s, or if it AVERAGES in the 80s? In the former, I might as well keep it at 45 and 1.3, otherwise I'll have to lower it, especially given the long render times I sometimes do on the machine.
2) Deciding I wanted to try some settings where the AIDA64 stress test doesn't even touch the 80s, I set the voltage to 1.25 and kept the CPU core at 45. I ran AIDA again and now the temps were maxing out in the high 70s, I think one core might have hit 80. I understand this to be safe.
Q: If I can keep the CPU core at 45 (so the CPU runs at 4.5mhz), why not just always keep a lower voltage to keep it cooler? Why do 1.3 when 1.25 seems to work fine? For that matter, why not keep lowering the voltage? 1.1? 1.0? I assume at those lower voltages it won't be able to run at 45 - but given that I could run it at that, is it safe to leave the voltage at 1.25?
3) Deciding to leave the system at 1.25v, I next turned on the XMP ram profile at 2666 - this changed the cpu strap to 125. Deciding to play it safe, I put the CPU core at 35 (35 x 125 = 4,375). Ran AIDA again and the temps averaged in the 70s, one core hit a max of 80.
Q: I'd rather stay with a slightly lower Mhz and know I'm not risking anything with my temps - are these settings good for my "final" settings?
4) Until my OC I've never heard my Corsair RM750i fan boot up - it only does it when it's under a certain percentage of output. Previously the fan was never on, even during 100% CPU-utilization Cinema4d renders, which I would sometimes run for 12+ hours. Given that the fan now DOES turn on with my OC settings, is it going to be safe if I continue doing long 12+ hour, 100% CPU renders? Is this safe for consistent use? (Say, one or two long renders a week for the next few years?)
FINALLY - QUESTION IN TITLE
5) I did a bit of Googling and it seems that the XMP profile for the RAM makes little to no difference - 2-5% in a few cases, in some cases no difference. Is it better to just leave the RAM XMP off and know I can boost my CPU core speed a bit to get my MHZ up from 4.375 to 4.5, both at 1.25v? Then again, maybe I won't even notice the difference for the ran RAM at 2666 instead of 2111 in something like After Effects?
Any advice would be appreciated. Thanks!
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