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Done my first overclock, few questions (i7 930)

post #1 of 9
Thread Starter 
Hi all,

I'm totally new to overclocking, tried to read a good amount of guides before starting to overclock my i7 930 (using Noctua D14 cooler), anyway here are my current results:

Overclock: 4Ghz + HT (21x191)
Vcore: 1.3
Uncore/Vtt :1.3
Memory: x8 (1528) 9/9/9/24 vdimm: 1.65
UCLK:Auto = x16 (3056)
QPI link: Auto = x18 (3438)
IOH/ICH/CPU PLL voltage are set to Auto
Turbo is disabled
Disabled any power saving option I could find in the BIOS
Absolute maximum BCLK I could achieve was 222 (unstable), 223+ wouldn't post. 220 was 24h stable.

Stability tests checked:
x10 maximum IBT passes
18 hours prime95 blend test without errors

Temps (I live in a damn hot place, these are the temps with the AC on, with it off temps will rise at least +5-6 degrees):
Idle: 40/39/37/34
IBT load: 78/78/75/73
Prime95 load: 68/68/66/64

I think I can get slightly better temps if I reseated the heatsink because I don't think I applied the thermal paste very well.


Anyway to the questions:

1- I've set my vcore to 1.3 in the BIOS, but in CPU-Z it shows as 1.288 at max load, does this mean that my CPU is running 4Ghz @ 1.288 or is the BIOS more accurate?
2- How can I check what's my current CPU PLL voltage value (it's set to Auto in the BIOS)? I use intel extreme tuning utility to see my current IOH/ICH (both show as 1.1 if it's accurate).
3- When should I start manually increasing the CPU PLL/IOH/ICH voltages in the BIOS if I wanted to push the CPU more?
4- Are my temps looking OK? Also, what's the max Prime95 load temps limit (IBT already pushes to high temps) so I'd have an idea about when I should stop overclocking the CPU further?
5- I required a vtt voltage of 1.3 to get a stable 220 BCLK, does that mean I should expect using less vtt voltage for 191 BCLK?
6- After achieving a desired overclock and wanted to use it 24/7, what power saving options should I enable in the BIOS? i.e EIST, C1E. What about the spread spectrum stuff, should I leave those as disabled?


I apologize for asking so many questions, feel free to answer a couple only if you don't want to bother with the rest .

Any help would be appreciated.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
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post #2 of 9
To try and answer your first question:
Well the setting in the bios is only an estimate, the motherboard can usually get close but not exactly to the set voltage.

CPU-Z will be showing an actual reading of the voltage supplied to your CPU whereas your BIOS will be showing the desired voltage. So your CPU is running 4GHZ @1.288
Also i have noticed in the past that sometimes as load goes up on a processor, the voltage may drop slightly so this might be contributing to the 1.288 that you are seeing instead of 1.3
Edited by TheArtOfMeh - 5/30/11 at 4:19pm
Orange Goo
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post #3 of 9
Thread Starter 
Thanks for replying, guess the CPU's voltage as shown in CPU-Z is probably more accurate. If it matters at all my Vcore in CPU-Z is always showing as 1.288, whether with load or without (even when I enabled EIST & C1E).

More response would be great.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
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post #4 of 9
Quote:
Originally Posted by MetallicA View Post
IOH/ICH/CPU PLL voltage are set to Auto

Stability tests checked:
x10 maximum IBT passes
18 hours prime95 blend test without errors
Get those volts manually set to their stock values first, never use auto. The "10 runs of linpack = 24hrs of Prime95" is utter garbage, linpack using all memory for 8 hours or more is what you need.
     
CPUMotherboardGraphicsRAM
Core i7 6700k @ 4.5 GHz Asus Sabertooth Z170 S ZOTAC GTX 1070 AMP! 8GB G.SKILL Ripjaws V 16GB DDR4 2400 @ 2800 
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Crucial MX100 512GB Samsung 850 EVO 1TB Toshiba 2TB 7.2K RPM Silicon Power S60 120GB 
CoolingOSMonitorKeyboard
Noctua NH-D15S Windows 10 Pro x64 Acer G257HU Logitech G910 
PowerCaseMouseMouse Pad
EVGA SuperNOVA 750W G2 Cooler Master HAF XB EVO Steelseries Rival Some cheap generic crap 
AudioAudio
Asus Xonar DGX Kingston HyperX Cloud Revolver 
CPUMotherboardGraphicsRAM
Core i7 4710MQ Eurocom X3 R2/Clevo P157SM-A GeForce GTX 965M 4GB @ 1178/1353 MHz 16GB DDR3L 1866 @ 2133 11-11-11-31-2T 
Hard DriveHard DriveCoolingOS
[SSD] Mushkin ECO2 240GB [HDD] HGST 1TB 7.2K RPM SATA III Stock Windows 10 Pro x64 
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15.6" 1080P LCD Stock Stock 180W Stock 
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Hard DriveHard DriveHard DriveHard Drive
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Noctua NH-D15S Windows 10 Pro x64 Acer G257HU Logitech G910 
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Hard DriveHard DriveCoolingOS
[SSD] Mushkin ECO2 240GB [HDD] HGST 1TB 7.2K RPM SATA III Stock Windows 10 Pro x64 
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post #5 of 9
From what I know of Intel CPU's; I would say the maximum temperature to run at w ould be about 70, so your temps are looking okay, but if i were you i would be looking at getting them down as much as possible so that at load your 50-60 in every possible stress test and with the AC off (preferably), that way you shouldnt have too many problems with instability caused by heat.
Orange Goo
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Orange Goo
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by GigaByte View Post
Get those volts manually set to their stock values first, never use auto. The "10 runs of linpack = 24hrs of Prime95" is utter garbage, linpack using all memory for 8 hours or more is what you need.
Just to be sure, default volts for those are IOH/ICH = 1.1 and CPU PLL = 1.8? As for the 10 runs thing, I just did that to make sure my system was semi stable before running prime95 and heading to bed .

@DAV1DR1CHARDS

Isn't that kind of the standard for SB CPUs (50 to 60 degrees)? I thought the first gen i7 processors are known to cause a lot of heat so 70-80 degrees with 100% IBT load isn't that uncommon when overclocked to 4Ghz +
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
  hide details  
Reply
post #7 of 9
Quote:
Originally Posted by MetallicA View Post
Just to be sure, default volts for those are IOH/ICH = 1.1 and CPU PLL = 1.8? As for the 10 runs thing, I just did that to make sure my system was semi stable before running prime95 and heading to bed .
Yes.

CPU PLL = 1.80v
QPI PLL = 1.10v
IOH = 1.10v
ICH = 1.10v
ICH I/O = 1.50v
PCI-E = 1.50v
     
CPUMotherboardGraphicsRAM
Core i7 6700k @ 4.5 GHz Asus Sabertooth Z170 S ZOTAC GTX 1070 AMP! 8GB G.SKILL Ripjaws V 16GB DDR4 2400 @ 2800 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 512GB Samsung 850 EVO 1TB Toshiba 2TB 7.2K RPM Silicon Power S60 120GB 
CoolingOSMonitorKeyboard
Noctua NH-D15S Windows 10 Pro x64 Acer G257HU Logitech G910 
PowerCaseMouseMouse Pad
EVGA SuperNOVA 750W G2 Cooler Master HAF XB EVO Steelseries Rival Some cheap generic crap 
AudioAudio
Asus Xonar DGX Kingston HyperX Cloud Revolver 
CPUMotherboardGraphicsRAM
Core i7 4710MQ Eurocom X3 R2/Clevo P157SM-A GeForce GTX 965M 4GB @ 1178/1353 MHz 16GB DDR3L 1866 @ 2133 11-11-11-31-2T 
Hard DriveHard DriveCoolingOS
[SSD] Mushkin ECO2 240GB [HDD] HGST 1TB 7.2K RPM SATA III Stock Windows 10 Pro x64 
MonitorKeyboardPowerCase
15.6" 1080P LCD Stock Stock 180W Stock 
MouseAudio
Touchpad/Microsoft Optical Mouse Sound Blaster X-Fi MB3 
  hide details  
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CPUMotherboardGraphicsRAM
Core i7 6700k @ 4.5 GHz Asus Sabertooth Z170 S ZOTAC GTX 1070 AMP! 8GB G.SKILL Ripjaws V 16GB DDR4 2400 @ 2800 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 512GB Samsung 850 EVO 1TB Toshiba 2TB 7.2K RPM Silicon Power S60 120GB 
CoolingOSMonitorKeyboard
Noctua NH-D15S Windows 10 Pro x64 Acer G257HU Logitech G910 
PowerCaseMouseMouse Pad
EVGA SuperNOVA 750W G2 Cooler Master HAF XB EVO Steelseries Rival Some cheap generic crap 
AudioAudio
Asus Xonar DGX Kingston HyperX Cloud Revolver 
CPUMotherboardGraphicsRAM
Core i7 4710MQ Eurocom X3 R2/Clevo P157SM-A GeForce GTX 965M 4GB @ 1178/1353 MHz 16GB DDR3L 1866 @ 2133 11-11-11-31-2T 
Hard DriveHard DriveCoolingOS
[SSD] Mushkin ECO2 240GB [HDD] HGST 1TB 7.2K RPM SATA III Stock Windows 10 Pro x64 
MonitorKeyboardPowerCase
15.6" 1080P LCD Stock Stock 180W Stock 
MouseAudio
Touchpad/Microsoft Optical Mouse Sound Blaster X-Fi MB3 
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Reply
post #8 of 9
Quote:
Originally Posted by MetallicA View Post

Isn't that kind of the standard for SB CPUs (50 to 60 degrees)? I thought the first gen i7 processors are known to cause a lot of heat so 70-80 degrees with 100% IBT load isn't that uncommon when overclocked to 4Ghz +
Yeah, thats quite common for the first gen i7's but if you can try some things for example, which works better for you: positive or negative air pressure, you may find you can drop off quite a few degrees compared to most peoples overclocks, it may help when it comes to keeping your system stable, although your processor might be happpy with the temperatures i would just prefer not to see 70+ Degrees on such a nice processor.
Orange Goo
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FX 8370e CHVF-Z Asus GeForce GTX 960 Strix 2GB 4x2GB Crucial Ballistix Smart Tracer 
Hard DriveHard DriveCoolingOS
Crucial M500 120GB SSD WD Caviar Black 2TB Cryorig H7 Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Dell U2417H Saitek Cyborg V7 Cooler Master Real Power M620 (620 Watt) Fractal Define R4 
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Orange Goo
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CPUMotherboardGraphicsRAM
FX 8370e CHVF-Z Asus GeForce GTX 960 Strix 2GB 4x2GB Crucial Ballistix Smart Tracer 
Hard DriveHard DriveCoolingOS
Crucial M500 120GB SSD WD Caviar Black 2TB Cryorig H7 Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
Dell U2417H Saitek Cyborg V7 Cooler Master Real Power M620 (620 Watt) Fractal Define R4 
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by DAV1DR1CHARDS View Post
Yeah, thats quite common for the first gen i7's but if you can try some things for example, which works better for you: positive or negative air pressure, you may find you can drop off quite a few degrees compared to most peoples overclocks, it may help when it comes to keeping your system stable, although your processor might be happpy with the temperatures i would just prefer not to see 70+ Degrees on such a nice processor.
Thanks for the tip, never thought of trying different air intake/exhaust methods, gonna have to look up about the subject and see how HAF X owners usually setup their case's airflow and try out different stuff. I'm going to reseat the heatsink as well once I get some decent high % iso propyl so hopefully that'll help too.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4Ghz ASUS Sabertooth X58 GT 220 (temp) Corsair XMS3 6GB 1600 
Hard DriveOSMonitorPower
500GB WD Caviar black Windows 7 Premium 64bit 22" HP 1680x1050/ 50" 1080p Pioneer Kuro 9G Corsair AX850 
Case
Cooler Master HAF X 
  hide details  
Reply
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