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Overclocking advice on a Sabertooth X79 and 4820k.

post #1 of 8
Thread Starter 
I searched extensively for advice on my specific setup, but have come up blank. Here is what I am working with:

Asus Sabertooth X79 motherboard
Intel i7 4820k
32GB Corsair Vengence Elite 1866 RAM
2x AMD Radeon 7870 Ghz edition
Corsair RM750 Power Supply
Corsair H80i Water Cooler
Samsung 840 120GB HD
2 Seagate 2TB 7200RPM (Running RAID 0)
4 Aero Cool Shark Fans
4 Stock In Win GR-one Fans
Windows 8.1 Professional

Basically, I am failing overclocking anything on this machine. Temps on graphics card rarely exceed 90 degrees Fahrenheit. First benchmark tests with 3DMark!11 were scoring around 14,000 with only the GPUs overclocked to 1150MHz with power control turned to 10% over in Catalyst Suite. All of the sudden, I am lucky to get 12,750. Processor appears to be suffering.

Tried overclocking the RAM to 2133MHz, but Chrome and other apps immediately crashed. I am new to the 2011 board. With the h80i, I would think I could overclock the processor to over 4.Ghz no problem, but I am slightly confused with the Asus firmware. BIOS is updated to the 4608 build. All drivers are updated. Corsair software isn't completely compatible with Windows 8.1.

Please help! My previous i5 build was preforming better on benchmark tests, but I am not sure where to start.

Thanks!
Edited by CrappyComputer - 1/7/14 at 12:37am
post #2 of 8
  • For CPU voltage: Well If you want to be totally safe, I'd keep the CPU voltage under 1.35v. The max voltage for this chip recommended by Intel is 1.4v.
  • Make sure you keep your BLCK frequency at 100.00
  • And if your memory modules support XMP, then use it. Don't manually set the ram clock if it is available for you to use.
  • Well if you're aiming for 4.3 GHz It would be the core multiplier as 43x and the BLCK set to 100.00 which would be = 43 X 100 = 4300Mhz (4.3 GHz)

Well I'd reccomend a Vcore voltage of 1.275, you may need to readjust the voltage to make your CPU stable, use a program such as Prime 95 for stability testing and Realtemp for CPU temperature monitoring. I would also check the windows event logs for WHEA errors in the system tab.

Overclocking your ram from 1866 to 2133 will not really give much of an performance increase, in fact it is really unnoticeable unless you do benchmarks.
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post #3 of 8
Stay far away from the Corsai RM series

http://www.overclock.net/t/1455892/why-you-should-not-buy-a-corsair-rm-psu

Seasonic G series 650 watts is a better PSU

And yes you dont need more wattage then 650 watts

And dont get the HX650 which is the Corsair version of the G as Corsair removed 2 of the 4 PCI-E cables

Just stay away from Corsair
Edited by shilka - 1/7/14 at 7:23am
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Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
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Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Harman Kardon HKTS 60 Dali Opticon Vokal x2 Dali Opticon 2 
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post #4 of 8
Thread Starter 
After a good day of tuning, I found some optimal settings. To anyone that is interested.

Asus Sabertooth X79 (2011) Motherboard

CPU Overclocking: Intel i7 4820k

4.7 GHZ. (63 Celsius Max Temp running Prime95)
1.375 CPU Voltage
1.275 VCore Voltage

RAM: Corsair Vengence Elite 32GB 1866MHz
XMP Profile @1866 (No overclock)
2133 was not stable. Tested for benchmarking

GPU: 2X Sapphire Radeon 7870GHZ OC Edition (Running in Corssfire)
GPU Clock: 1175Mhz
GPU Memory Clock: 1450 Mhz
Voltage: 1.299V (Max Voltage)
Fan Speed: 75% (May be lowered)

3DMark11 Score (Performance)
14,086 (Max Score)

These settings crash with 3DMark FireStrike. I believe this is solely due to FPS processing issues. The mid-range tests ran around 2000FPS before crashing.


Thanks to everyone for the help. Anyone looking for advice with a similar setup, please feel free to PM me.
post #5 of 8
Hi, I have same mobo and CPU with h80i cooler. I am very interested in your results and will love to duplicate it, but I know nothing about oc . I have read lots of info lately so I am ready to do this. Is there anyway you can post what you change in your bios and what you left on auto if you did. No explanation about the meaning of each item is needed its just that there is so many choices is hard to know which one to adjust.
Thank you very much.
post #6 of 8
Quote:
Originally Posted by Yopapa View Post

Hi, I have same mobo and CPU with h80i cooler. I am very interested in your results and will love to duplicate it, but I know nothing about oc . I have read lots of info lately so I am ready to do this. Is there anyway you can post what you change in your bios and what you left on auto if you did. No explanation about the meaning of each item is needed its just that there is so many choices is hard to know which one to adjust.
Thank you very much.

Just wanted to note that not all CPU's will overclock the same, some CPU's may need more voltage than others for the same overclock (Even if its the same model).
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by Yopapa View Post

Hi, I have same mobo and CPU with h80i cooler. I am very interested in your results and will love to duplicate it, but I know nothing about oc . I have read lots of info lately so I am ready to do this. Is there anyway you can post what you change in your bios and what you left on auto if you did. No explanation about the meaning of each item is needed its just that there is so many choices is hard to know which one to adjust.
Thank you very much.

A couple things to keep in mind prior to attempting to replicate my settings. I started much lower and slowly worked my way up with the CPU. There are a number of factors that can affect your end results, Cooling and being lucky and getting a good processor. If you are running Windows 8.1 and are running the Corsair Link software, follow these instructions to get the h80i recognized:

Go into the registry and look for HKLM\SYSTEM\CurrentControlSet\Enum\USB\VID_1B1C&PID_0C04. For each port/path string you see under this (numbers and ampersands smushed together), open the "Device Parameters" and change the FOUR DWORD settings to 0 (AllowIdleIrpInD3, DeviceSelectiveSuspended, EnhancedPowerManagementEnabled, SelectiveSuspendEnabled). Reboot.

Windows 8.1 enables Selective Suspend on HID devices by default now, which is not supported on the current firmware of the H80i and H100i. I can confirm that this bug does not appear to exist with the older H80/H100 and USB Commander. Connectivity still isn't perfect, so I'm hoping that there's going to be a firmware update soon to fix this properly. (Stolen from Corsair's help page)

All of the settings that you will need to edit for the CPU can be found in the AI Tweaker settings under the advanced mode of the motherboard. On the first overclock you will need to restart the computer before making any changes. The first setting you want to change in the processor setting. Set it to "Sync all cores." Change the multiplier on the first core to whatever speed you are looking to achieve. I would start with 40 (4.0Ghz) and work up from there.. Underneath that you will see the settings for the CPU voltage and VCore voltage. Unless you really want to push your processor, and risk damaging it, leave the voltages stock. The settings that I listed above were specifically done for benchmarking purposes.

Also, make sure to update your BIOS to the newest build, which is currently 4608. You can download it from http://asus.com. To use BIOS Flashback, get a USB drive that can be formatted to FAT32. Download the latest firmware. Rename the file SABERX79.CAP. Copy to FAT32 formatted USB drive. Insert drive into white USB port on the back panel. Hold the BIOS Flashback Button down for about 3 seconds. It will stop blinking once the firmware has been updated.

To others with similar setups, another hiccup I had was that MSI Afterburner is not able to overvolt the 7870GHz. I believe this is true for all of the AMD Radeon HD7XXX GPUs. Saphhire Trixx works fine.

When overclocking, there are several pieces of software I use to monitor temperatures and stress test the system.

OpenHardwareMonitor - Monitors hardware temps/speeds.
CPU-Z - System Specs
Prime95 - Maxes out your processor. Use with OpenHardwareMonitor to check temps on full loads.
3dMark - GPU testing
PcMark - Total PC performance testing.

My basic advice. Take your CPU as far as it can go on stock voltage. If your RAM supports XMP profiles, turn that on in the RAM configuration. This can be done on the startup screen of the BIOS. You will get minimal performance increases from overclocking your RAM. Once you are more comfortable and knowledgeable about the effect of these changes, go for it. You can often find min/max voltage settings in the hardware manual.

Good luck, and have fun!thumb.gif
post #8 of 8
Thank you, this is a great advise and it will help me a lot.
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