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i7 2600k w/ ASROCK z68 Pro3 Gen3 Multiplier Fluctuations

post #1 of 35
Thread Starter 
I am overclocking an i7 2600k on an ASROCK z68 Pro3 Gen3. Speed stepping, C1E, C3 & C6 are all disabled yet my multiplier still fluctuates from 34 to 46 while running prime 95. Windows power setting is also on high performance. Thermal protection is disabled. I am using the latest BIOS revision 1.20. Anyone have an idea what could be causing this?


Thanks for your help!
Edited by crunkinshoe - 4/2/12 at 3:21am
post #2 of 35
Try using the guide in my sig to overclock smile.gif
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post #3 of 35
Thread Starter 
I appreciate the guide but I'm not planning on running full time with these settings. This is just for testing purposes. I would be enabling speed stepping, C1E and thermal protection I am just trying to get the multiplier to stay constant while running prime 95. I have played with just about every setting but it doesn't seem to make a difference.
Edited by crunkinshoe - 4/1/12 at 11:54pm
post #4 of 35
Your cores are fluctuating probably because of the turbo power limits. As mentioned take a look at the guide in my sig.

Could you take pics of your current settings in the BIOS, a FAT32 USb stick and F12 should do the trick. thumb.gif
it looks alive
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Sandy Transformed
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CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
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LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
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it looks alive
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Sandy Transformed
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CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
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post #5 of 35
Thread Starter 
I have those set to 200+ so I don't think that is it. Thanks for taking a look I really appreciate it.

Here's the settings I'm using now and have been stable on prime 95 for 8 hours but the turbo isn't at max the whole time so...

Advanced Turbo 50 [disabled]
Load Optimized CPU settings [disabled]
Load Optimized GPU settings [disabled]
CPU Ratio Manual [46]
Internal PLL overvoltage [enable]
GT Over Clock [disabled]
speedstep [enabled]
turbo boost power limit [Manual]
short duration power limit [230]
long duration power limit [200]
long duration maintained [1]
Additional Turbo Voltage [Auto]
Core Current Limit [200]
BCLK [100.00]
Spread Spectrum [disabled]

Power Saving Mode [disabled]
CPU Core Voltage Offset [+100mV]
IGPU Voltage Offset +0mV [Auto]
DRAM Voltage 1.575 [Auto]
PCH Voltage 1.059 [Auto]
CPU PLL Voltage 1.794 [Auto]
VTT Voltage 1.057 [Auto]
VCCSA Voltage 0.925 [Auto]

Active Processor Cores [All]
Hardware Prefetcher [Enabled]
Adjacent Cache Line Prefetcher [Enabled]
CE1 [Enabled]
CPU C3 [Disabled]
CPU C6 [Disabled]
C State Support [Auto]
CPU thermal throttling [Enabled]
Intel Visualization Technology [Enabled]
No Execute Memory [Disabled]
Edited by crunkinshoe - 4/2/12 at 9:16am
post #6 of 35
I expierenced the same problem when I was using that mobo, during IBT multiplier was fluctuating between 45 and 33 (2500k) with powerlimits set to max etc.

Now I tested IBT/Linx on Asus P8z68-v/gen3 and multiplier was steady 45 all the time...

Could it be throttling or that your motherboard just cannot handle your overclock? That board only has 4+1 phase power-design compared to Asus´ 12+4...
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My System
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i7 2600k @4,5GHz @1,336V Asus P8Z68-V/Gen3 MSI HD7950 TFIII @1150/1500Mhz@1,1v  8gb Team group Vulcan 2133MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung spinpoint F3 1TB WD Caviar blue 1TB LG Coolink Corator DS 
OSMonitorKeyboardPower
Win7 home 64bit BENQ G2320HDB @72Hz 4+ years old fujitsu siemens XFX core edition pro 750w 
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Antec 300 ultimate Logitech G5 steelseries WOW-edition 
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post #7 of 35
W/ my board and all power saving features turned off (speedstep, C1e, C3, & C6) i wasnt able to get the multi to say fixed w/ fixed voltage past a 40 multi. At 40multi it would run at 4ghz all the time but when i tried 43 or 45 it would fluctuate between 40-45. I ended up switching to offset
Z170 Build
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Z68 Build
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Lenovo T430
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CPUMotherboardGraphicsGraphics
I7 6700K @ 4.5ghz  Gigabyte Z170x Gaming 6 XFX R9 290x 8GB XFX R9 290x 8GB 
RAMHard DriveHard DriveCooling
Gskill RipJaws V 16GB 3000mhz Samsung 850 EVO 250GB Seagate Barracuda 2TB EK-Supremacy EVO CPU Water Block 
CoolingCoolingCoolingCooling
EK R9 290X GPU Waterblocks EK-XRES 140 Revo D5 PWM Pump Alphacool NexXxoS 360mm ST30 Alphacool NexXxoS 240mm ST30 
CoolingCoolingOSMonitor
Alphacool NexXxoS 120mm ST30 Cooler Master Jetflo 120mm Fans Windows 10  LG 34UC88 
KeyboardPowerCaseMouse
Quickfire TK red switch Cooler Master V1000 MasterCase Pro 5 CM Storm Havoc 
CPUMotherboardGraphicsGraphics
I5 2500K @ 4.6ghz  ASRock Z68 Extreme 3 Gen 3 ASUS 7870 Ghz Edition ASUS 7870 Ghz Edition 
RAMHard DriveHard DriveOptical Drive
Gskill RipJaws X 16GB 1600mhz Seagate 2TB Seagate 320GB ASUS Burner 
CoolingCoolingCoolingOS
Cooler Master Eisberg 240L + 120mm Rad Koolance 3/8 x 1/2 Compression Fittings PrimoChill Advanced LRT Windows 7  
OSMonitorKeyboardPower
Ubuntu 12.04 ASUS 24" Cooler Master Quickfire TK  Cooler Master V1000 
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Z170 Build
(20 items)
 
Z68 Build
(20 items)
 
Lenovo T430
(14 items)
 
CPUMotherboardGraphicsGraphics
I7 6700K @ 4.5ghz  Gigabyte Z170x Gaming 6 XFX R9 290x 8GB XFX R9 290x 8GB 
RAMHard DriveHard DriveCooling
Gskill RipJaws V 16GB 3000mhz Samsung 850 EVO 250GB Seagate Barracuda 2TB EK-Supremacy EVO CPU Water Block 
CoolingCoolingCoolingCooling
EK R9 290X GPU Waterblocks EK-XRES 140 Revo D5 PWM Pump Alphacool NexXxoS 360mm ST30 Alphacool NexXxoS 240mm ST30 
CoolingCoolingOSMonitor
Alphacool NexXxoS 120mm ST30 Cooler Master Jetflo 120mm Fans Windows 10  LG 34UC88 
KeyboardPowerCaseMouse
Quickfire TK red switch Cooler Master V1000 MasterCase Pro 5 CM Storm Havoc 
CPUMotherboardGraphicsGraphics
I5 2500K @ 4.6ghz  ASRock Z68 Extreme 3 Gen 3 ASUS 7870 Ghz Edition ASUS 7870 Ghz Edition 
RAMHard DriveHard DriveOptical Drive
Gskill RipJaws X 16GB 1600mhz Seagate 2TB Seagate 320GB ASUS Burner 
CoolingCoolingCoolingOS
Cooler Master Eisberg 240L + 120mm Rad Koolance 3/8 x 1/2 Compression Fittings PrimoChill Advanced LRT Windows 7  
OSMonitorKeyboardPower
Ubuntu 12.04 ASUS 24" Cooler Master Quickfire TK  Cooler Master V1000 
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Cooler Master HAF 932 Black Edition Cooler Master Havoc 
CPUGraphicsRAMHard Drive
i5-3210M  Intel HD Graphics 4000 Gskill 16GB 1600mhz  Crucial MX200 256GB 
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Seagate 320GB Ubuntu 16.04 Windows 10 1600x900 
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post #8 of 35
Thread Starter 
I thought that it could possibly be the Mobo not having the best power phase but it is only a 4.6 GHz overclock so I kinda dismissed it. Maybe I will have to RMA and get a better mobo. I've tried it with thermal throttling off and it still did it. Do you know at what temp thermal throttling kicks in?
post #9 of 35
I think from what ive read around 95c....but its usually recommended to say under 85c
Z170 Build
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Z68 Build
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Lenovo T430
(14 items)
 
CPUMotherboardGraphicsGraphics
I7 6700K @ 4.5ghz  Gigabyte Z170x Gaming 6 XFX R9 290x 8GB XFX R9 290x 8GB 
RAMHard DriveHard DriveCooling
Gskill RipJaws V 16GB 3000mhz Samsung 850 EVO 250GB Seagate Barracuda 2TB EK-Supremacy EVO CPU Water Block 
CoolingCoolingCoolingCooling
EK R9 290X GPU Waterblocks EK-XRES 140 Revo D5 PWM Pump Alphacool NexXxoS 360mm ST30 Alphacool NexXxoS 240mm ST30 
CoolingCoolingOSMonitor
Alphacool NexXxoS 120mm ST30 Cooler Master Jetflo 120mm Fans Windows 10  LG 34UC88 
KeyboardPowerCaseMouse
Quickfire TK red switch Cooler Master V1000 MasterCase Pro 5 CM Storm Havoc 
CPUMotherboardGraphicsGraphics
I5 2500K @ 4.6ghz  ASRock Z68 Extreme 3 Gen 3 ASUS 7870 Ghz Edition ASUS 7870 Ghz Edition 
RAMHard DriveHard DriveOptical Drive
Gskill RipJaws X 16GB 1600mhz Seagate 2TB Seagate 320GB ASUS Burner 
CoolingCoolingCoolingOS
Cooler Master Eisberg 240L + 120mm Rad Koolance 3/8 x 1/2 Compression Fittings PrimoChill Advanced LRT Windows 7  
OSMonitorKeyboardPower
Ubuntu 12.04 ASUS 24" Cooler Master Quickfire TK  Cooler Master V1000 
CaseMouse
Cooler Master HAF 932 Black Edition Cooler Master Havoc 
CPUGraphicsRAMHard Drive
i5-3210M  Intel HD Graphics 4000 Gskill 16GB 1600mhz  Crucial MX200 256GB 
Hard DriveOSOSMonitor
Seagate 320GB Ubuntu 16.04 Windows 10 1600x900 
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Z170 Build
(20 items)
 
Z68 Build
(20 items)
 
Lenovo T430
(14 items)
 
CPUMotherboardGraphicsGraphics
I7 6700K @ 4.5ghz  Gigabyte Z170x Gaming 6 XFX R9 290x 8GB XFX R9 290x 8GB 
RAMHard DriveHard DriveCooling
Gskill RipJaws V 16GB 3000mhz Samsung 850 EVO 250GB Seagate Barracuda 2TB EK-Supremacy EVO CPU Water Block 
CoolingCoolingCoolingCooling
EK R9 290X GPU Waterblocks EK-XRES 140 Revo D5 PWM Pump Alphacool NexXxoS 360mm ST30 Alphacool NexXxoS 240mm ST30 
CoolingCoolingOSMonitor
Alphacool NexXxoS 120mm ST30 Cooler Master Jetflo 120mm Fans Windows 10  LG 34UC88 
KeyboardPowerCaseMouse
Quickfire TK red switch Cooler Master V1000 MasterCase Pro 5 CM Storm Havoc 
CPUMotherboardGraphicsGraphics
I5 2500K @ 4.6ghz  ASRock Z68 Extreme 3 Gen 3 ASUS 7870 Ghz Edition ASUS 7870 Ghz Edition 
RAMHard DriveHard DriveOptical Drive
Gskill RipJaws X 16GB 1600mhz Seagate 2TB Seagate 320GB ASUS Burner 
CoolingCoolingCoolingOS
Cooler Master Eisberg 240L + 120mm Rad Koolance 3/8 x 1/2 Compression Fittings PrimoChill Advanced LRT Windows 7  
OSMonitorKeyboardPower
Ubuntu 12.04 ASUS 24" Cooler Master Quickfire TK  Cooler Master V1000 
CaseMouse
Cooler Master HAF 932 Black Edition Cooler Master Havoc 
CPUGraphicsRAMHard Drive
i5-3210M  Intel HD Graphics 4000 Gskill 16GB 1600mhz  Crucial MX200 256GB 
Hard DriveOSOSMonitor
Seagate 320GB Ubuntu 16.04 Windows 10 1600x900 
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post #10 of 35
Thread Starter 
Yea I'm at 80C max. I thought thermal throttling kicked in at like 87% of max temp (95C) which would be 82C but the fluctuations happen at even 75C so I don't think it's that. I'm going to try a lower OC like 4GHz and still if it still does it. I guess if it stops then it must be the mobo power phase design can't handle 4.6.
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