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Fan Control and OCing on MSi motherboard

post #1 of 4
Thread Starter 
Hello,
I am very new to building PC's (I just built my first one). I have a core i5 3570K and a Hyper 212+ cooler, together with an MSi z77a-G45 motherboard. I have some questions about two topics, one pertaining to fan speed and the other to overclocking.
First, it seems like my BIOS can only control two system fans along with the CPU cooler. Currently, my two case fans are set to auto. However, my cooler fan was running at 100% and it was kind of loud, so I'm interested in reducing the speed. It seems like I have the option to set the "CPU Smart Fan Target," which is a temperature threshold. I currently set it to 40 Celsius. Once I set it to 40 (as opposed to the default), a new option pops up which is basically the minimum CPU fan speed, which is set to 62.5% of the maximum RPM. Is it dangerous to have the fan blowing at a speed less than 100% when it's below 40? For instance, perhaps there can be huge temperature spikes in the CPU (going from 30 at idle to 90 at load very quickly), and because the fan is spinning only at 62.5%, it might take a while to ramp up to 100% fan speed and hence optimally cool the CPU. Should I be worried about such things? Can I set CPU min fan speed to 50% (I want it lower so that it's quieter)?

Second, I am interested in OCing my CPU but (even after reading many articles), I am still confused as to how to do it in the BIOS (actually, I'm also confused about the process in general). I would like to do it manually, without the OC Genie function of the MSi motherboard. I am not looking to do a huge OC, I'm mainly interested in learning about the process with a little bit of speedup (perhaps 4.0 GHz). My settings in the BIOS are essentially default (with the exception of the fan speeds I was referring to earlier). From what I gather, there are two main things I need to be concerned with, the CPU ratio (or multiplier I believe), along the VCore. I'm very confused as to what else I need to do. What should EIST be? Should I disable Turbo Boost? What about Spread Spectrum? Should I do anything with power management? Should I have my fans spin at 100% RPM at all times? I guess I've also gathered that you can OC in two ways, one through turbo boost and the other directly by adjusting the CPU ratio (if I adjust the CPU ratio to 4.0 GHz, do I also need to change the Turbo Boost ratio limits to 4.0 GHz? Can I leave them alone at 3.8 for 1 core, 3.8 for 2 cores, 3.7 for 3 cores, and 3.6 for 4 cores?). In general, any information you give will be helpful, especially if it pertains specifically to MSi's BIOS options. Thank you very much for your help.
post #2 of 4
Quote:
Originally Posted by Rebbig View Post

Hello,
I am very new to building PC's (I just built my first one). I have a core i5 3570K and a Hyper 212+ cooler, together with an MSi z77a-G45 motherboard. I have some questions about two topics, one pertaining to fan speed and the other to overclocking.
First, it seems like my BIOS can only control two system fans along with the CPU cooler. Currently, my two case fans are set to auto. However, my cooler fan was running at 100% and it was kind of loud, so I'm interested in reducing the speed. It seems like I have the option to set the "CPU Smart Fan Target," which is a temperature threshold. I currently set it to 40 Celsius. Once I set it to 40 (as opposed to the default), a new option pops up which is basically the minimum CPU fan speed, which is set to 62.5% of the maximum RPM. Is it dangerous to have the fan blowing at a speed less than 100% when it's below 40? For instance, perhaps there can be huge temperature spikes in the CPU (going from 30 at idle to 90 at load very quickly), and because the fan is spinning only at 62.5%, it might take a while to ramp up to 100% fan speed and hence optimally cool the CPU. Should I be worried about such things? Can I set CPU min fan speed to 50% (I want it lower so that it's quieter)?
Second, I am interested in OCing my CPU but (even after reading many articles), I am still confused as to how to do it in the BIOS (actually, I'm also confused about the process in general). I would like to do it manually, without the OC Genie function of the MSi motherboard. I am not looking to do a huge OC, I'm mainly interested in learning about the process with a little bit of speedup (perhaps 4.0 GHz). My settings in the BIOS are essentially default (with the exception of the fan speeds I was referring to earlier). From what I gather, there are two main things I need to be concerned with, the CPU ratio (or multiplier I believe), along the VCore. I'm very confused as to what else I need to do. What should EIST be? Should I disable Turbo Boost? What about Spread Spectrum? Should I do anything with power management? Should I have my fans spin at 100% RPM at all times? I guess I've also gathered that you can OC in two ways, one through turbo boost and the other directly by adjusting the CPU ratio (if I adjust the CPU ratio to 4.0 GHz, do I also need to change the Turbo Boost ratio limits to 4.0 GHz? Can I leave them alone at 3.8 for 1 core, 3.8 for 2 cores, 3.7 for 3 cores, and 3.6 for 4 cores?). In general, any information you give will be helpful, especially if it pertains specifically to MSi's BIOS options. Thank you very much for your help.

1. MSI motherboards don't allow you to control all fan connectors. Some of them will just run full tilt all the time. Plug your fans into the connectors you can control.
It is not dangerous to have the fans running less than 100% when the CPU is cool. It will not spike, trust me. I run mine at 30% in SpeedFan when I'm idle and it doesn't spike up.

2. You want to raise the CPU ratio to 40. Your Vcore should never pass 1.5 V and preferably stay as low as possible. I don't know what voltages are needed for an Ivy Bridge CPU.
EIST is Intel SpeedStep and reduces your CPU speed when idle. You can leave it on.
You can either OC through Turbo boost or manually (disable Turbo boost and just set the multiplier to 40). People have different preferences.
Spread Spectrum should just be disabled. It's not important.
Your fans don't have to spin at 100% all the time (BTW, there's a safety that prevents your CPU fan from stopping in case you set it too low).
I personally disabled Turbo boost so I don't know if it would override your CPU ratio to have Turbo boost enabled.

This is not for your specific motherboard, but I wrote this a while back: http://www.overclock.net/t/963798/msi-p67a-gd55-review-and-oc-guide/0_20
It might help explain what some of the settings do.
M1XN
(18 items)
 
Study Zenbook
(5 items)
 
 
CPUMotherboardGraphicsRAM
i7 4770K @ 4.2 GHz ASUS Maximus VI Impact MSI GTX 970 Gaming 4G 2x8 GB Kingston HyperX DDR3 @ 2400 MHz 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 64 GB Crucial M4 128 GB SAMSUNG Spinpoint M9T 2 TB LiteOn DL-8ATSH 
CoolingOSMonitorKeyboard
Noctua NH-C14 Windows 10 64-bit ViewSonic VP2770 Vortex Pok3r 
PowerCaseMouseMouse Pad
Corsair SF600 NCASE M1 V2.5 Logitech G502 SteelSeries QcK+ 
AudioOther
HiFiMan HE-400 Logitech C920 
CPUGraphicsRAMHard Drive
i5-3317 GT 620M 2 GB soldered + 8 GB Corsair OCZ Vertex 3 120 
OS
Windows 7 Home Premium 64-bit 
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M1XN
(18 items)
 
Study Zenbook
(5 items)
 
 
CPUMotherboardGraphicsRAM
i7 4770K @ 4.2 GHz ASUS Maximus VI Impact MSI GTX 970 Gaming 4G 2x8 GB Kingston HyperX DDR3 @ 2400 MHz 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 64 GB Crucial M4 128 GB SAMSUNG Spinpoint M9T 2 TB LiteOn DL-8ATSH 
CoolingOSMonitorKeyboard
Noctua NH-C14 Windows 10 64-bit ViewSonic VP2770 Vortex Pok3r 
PowerCaseMouseMouse Pad
Corsair SF600 NCASE M1 V2.5 Logitech G502 SteelSeries QcK+ 
AudioOther
HiFiMan HE-400 Logitech C920 
CPUGraphicsRAMHard Drive
i5-3317 GT 620M 2 GB soldered + 8 GB Corsair OCZ Vertex 3 120 
OS
Windows 7 Home Premium 64-bit 
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post #3 of 4
Thread Starter 
Hello,
Thanks for your reply. Does anyone know the difference between "Turbo Boost" and "Enhanced Turbo Boost"? Both of these settings appear in my BIOS. Also, if I OC manually to say 4.0 GHz (rather than through Turbo Boost), does this mean the clock is always running at that speed (or does EIST prevent that and allow it to go slower)? If that's the case, is there a disadvantage to OCing through Turbo Boost? What settings do I need to change to OC through Turbo Boost? Thank you again!
post #4 of 4
Quote:
Originally Posted by Rebbig View Post

Hello,
Thanks for your reply. Does anyone know the difference between "Turbo Boost" and "Enhanced Turbo Boost"? Both of these settings appear in my BIOS. Also, if I OC manually to say 4.0 GHz (rather than through Turbo Boost), does this mean the clock is always running at that speed (or does EIST prevent that and allow it to go slower)? If that's the case, is there a disadvantage to OCing through Turbo Boost? What settings do I need to change to OC through Turbo Boost? Thank you again!

EIST or C1E (either of them) allows it to slow down even if overclocked without Turbo Boost.
M1XN
(18 items)
 
Study Zenbook
(5 items)
 
 
CPUMotherboardGraphicsRAM
i7 4770K @ 4.2 GHz ASUS Maximus VI Impact MSI GTX 970 Gaming 4G 2x8 GB Kingston HyperX DDR3 @ 2400 MHz 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 64 GB Crucial M4 128 GB SAMSUNG Spinpoint M9T 2 TB LiteOn DL-8ATSH 
CoolingOSMonitorKeyboard
Noctua NH-C14 Windows 10 64-bit ViewSonic VP2770 Vortex Pok3r 
PowerCaseMouseMouse Pad
Corsair SF600 NCASE M1 V2.5 Logitech G502 SteelSeries QcK+ 
AudioOther
HiFiMan HE-400 Logitech C920 
CPUGraphicsRAMHard Drive
i5-3317 GT 620M 2 GB soldered + 8 GB Corsair OCZ Vertex 3 120 
OS
Windows 7 Home Premium 64-bit 
  hide details  
Reply
M1XN
(18 items)
 
Study Zenbook
(5 items)
 
 
CPUMotherboardGraphicsRAM
i7 4770K @ 4.2 GHz ASUS Maximus VI Impact MSI GTX 970 Gaming 4G 2x8 GB Kingston HyperX DDR3 @ 2400 MHz 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 64 GB Crucial M4 128 GB SAMSUNG Spinpoint M9T 2 TB LiteOn DL-8ATSH 
CoolingOSMonitorKeyboard
Noctua NH-C14 Windows 10 64-bit ViewSonic VP2770 Vortex Pok3r 
PowerCaseMouseMouse Pad
Corsair SF600 NCASE M1 V2.5 Logitech G502 SteelSeries QcK+ 
AudioOther
HiFiMan HE-400 Logitech C920 
CPUGraphicsRAMHard Drive
i5-3317 GT 620M 2 GB soldered + 8 GB Corsair OCZ Vertex 3 120 
OS
Windows 7 Home Premium 64-bit 
  hide details  
Reply
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