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Safest QPI on 980x? - Page 2

post #11 of 14
Thread Starter 
Quote:
Originally Posted by mymlan View Post
It's alright to be a little timid on your first overclock. I still am. Still, it should be fine to go up to 1.375v for the CPU and 1.4v for QPI/VTT in the BIOS. Don't worry about voltage ripple, I'm sure it won't impact your OC. It would be much more noticeable when stressing your GPU anyway.

Remember that it's more about temperatures than it is about voltage. Stay within those suggested voltages and under 70°C and you should be golden. The 980x is a hell of a lot of fun!
Well the GPU is going to be next once I make my CPU/RAM O/C perfect. Not to get off topic but when I get to my GPU, where should I be looking for the voltage ripple? On the CPU voltage or on the IOH? Or elsewhere?

Thanks so far mym. I guess I will just ask one more time just to be sure and get out my last worries. I am mainly nervous about the NB because I have no way to monitor the temps there. I don't want to burn it with the QPI temperatures. I know my CPU will stay cool but I don't know about my NB. Is 1.4v still safe?
post #12 of 14
Your northbridge is connected to your IOH voltage. Raising your IOH will increase the heat generated by the NB as well as lead to greater stability with high BCLKs and CF/SLI setups. Your QPI/VTT voltage directly affects the IMC on your 980x which is why increasing it can lead to instability in your core. 1.4v is safe for your QPI but it sure isn't safe for your IOH. Keep your mobo volts (IOH, ICH) below 1.2v unless you've a block on them.

As a side note, putting PCIE frequency to 101 can help with higher overclocks like yours.
Leviathan
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Leviathan
(13 items)
 
Workstation
(10 items)
 
Alexandria
(11 items)
 
CPUMotherboardGraphicsRAM
i7 980X @ 4.3 HT on Asus P6T Deluxe V2 Radeon 5970 + GT 240 PHYSX Corsair 12gb (horrible) 
Hard DriveOSMonitorPower
64GB SSD boot + Raid 10 WDC Blues Pirated Win 7 (duh) Alienware AW2310 Corsair AX1200 
Case
Antec 902 Modded 
CPUMotherboardRAMHard Drive
Xeon E3-1265L V2 Asus P8C WS Kingston 32GB 1600MHz ECC Crucial M4 256GB 
CoolingOSPowerAudio
Corsair H50 ESXi 6.0RC Corsair HX1000 Focusrite Scarlett 18i20 
Other
Mellanox MNPA19-XTR 
CPUMotherboardGraphicsRAM
Dual Intel Xeon L5630 Supermicro X8DTH-6F Radeon 7750 64GB 1066MHz Registered DDR3 
Hard DriveHard DriveCoolingOS
4 x 4TB Hitachi SAS Ultrastar Crucial M4 256GB Dual NH-U9DX i4 vSphere 6.0RC 
PowerCaseOther
Corsair AX1200 Norco RPC-4220 Mellanox MNPA19-XTR 
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post #13 of 14
Thread Starter 
Yeah, I tried to push to 4.6GHz at 1.375v and 1.4 QPI but I got 3 different bluescreens:

3B
101
50

So for now I'm back to 1.35 on both until I can figure out what RAM setting I want to get to. Right now I'm at 1600 8-8-8-24 and I think that's awful. Am I wrong?
post #14 of 14
That's not awful at all. Also, unless you've a golden chip there's no way you'll make 4.6Ghz with HT on. Your slew of errors reveal that you're jumping the gun far too fast. To make a stable overclock you need to take things one a time. Do your RAM first and come back for your CPU. i.e. while experimenting with RAM settings, try to keep your CPU clock at 3.33Ghz and 1.2v, that way you can be sure your RAM is at a stable setting before working on the core. This is the beauty of an unlocked multiplier!
Leviathan
(13 items)
 
Workstation
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Alexandria
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CPUMotherboardGraphicsRAM
i7 980X @ 4.3 HT on Asus P6T Deluxe V2 Radeon 5970 + GT 240 PHYSX Corsair 12gb (horrible) 
Hard DriveOSMonitorPower
64GB SSD boot + Raid 10 WDC Blues Pirated Win 7 (duh) Alienware AW2310 Corsair AX1200 
Case
Antec 902 Modded 
CPUMotherboardRAMHard Drive
Xeon E3-1265L V2 Asus P8C WS Kingston 32GB 1600MHz ECC Crucial M4 256GB 
CoolingOSPowerAudio
Corsair H50 ESXi 6.0RC Corsair HX1000 Focusrite Scarlett 18i20 
Other
Mellanox MNPA19-XTR 
CPUMotherboardGraphicsRAM
Dual Intel Xeon L5630 Supermicro X8DTH-6F Radeon 7750 64GB 1066MHz Registered DDR3 
Hard DriveHard DriveCoolingOS
4 x 4TB Hitachi SAS Ultrastar Crucial M4 256GB Dual NH-U9DX i4 vSphere 6.0RC 
PowerCaseOther
Corsair AX1200 Norco RPC-4220 Mellanox MNPA19-XTR 
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Leviathan
(13 items)
 
Workstation
(10 items)
 
Alexandria
(11 items)
 
CPUMotherboardGraphicsRAM
i7 980X @ 4.3 HT on Asus P6T Deluxe V2 Radeon 5970 + GT 240 PHYSX Corsair 12gb (horrible) 
Hard DriveOSMonitorPower
64GB SSD boot + Raid 10 WDC Blues Pirated Win 7 (duh) Alienware AW2310 Corsair AX1200 
Case
Antec 902 Modded 
CPUMotherboardRAMHard Drive
Xeon E3-1265L V2 Asus P8C WS Kingston 32GB 1600MHz ECC Crucial M4 256GB 
CoolingOSPowerAudio
Corsair H50 ESXi 6.0RC Corsair HX1000 Focusrite Scarlett 18i20 
Other
Mellanox MNPA19-XTR 
CPUMotherboardGraphicsRAM
Dual Intel Xeon L5630 Supermicro X8DTH-6F Radeon 7750 64GB 1066MHz Registered DDR3 
Hard DriveHard DriveCoolingOS
4 x 4TB Hitachi SAS Ultrastar Crucial M4 256GB Dual NH-U9DX i4 vSphere 6.0RC 
PowerCaseOther
Corsair AX1200 Norco RPC-4220 Mellanox MNPA19-XTR 
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