Jump to content
Corsair Community

AX1200i/H100i GTX Awesomeness


Recommended Posts

My system:


Asus Maximus VIII Hero (1001 Bios)

i7 6700K

Corsair Vengeance LPX DDR4 2800

Corsair H80i Cooler

2xAsus Strix GTX 970 SLI (1279 GPU Boost, 7010 Memory Clock)

Corsair ax860i PSU

Corsair 230T Case

4xCorsair 120mm Red LED High Static Pressure Case Fans - 2 front, 1 pull me bottom, 1 push me top

Asus BDR Internal

Samsung 840 EVO 1TB SSD

Asus ROG Swift WQHD 1440p Monitor

Nvidia 61.43 Driver


I have been reading a lot about overclocking the i7 6700K. I have found two good guides:






This spreadsheet is very useful:




Most guides involve setting voltages. I have achieved a stable 4.6 or 4.8 GHz overclock without setting any voltages except through the XMP memory profile. I let the BIOS handle managing voltages as much as possible. I have not seen this approach recommended anywhere so I am posting it here. The settings are fairly simple.


1. Enter the BIOS setup.

2. Hit F5 to load the BIOS defaults.

3. In the Tweaker set the AI Overclock Tuner to XMP and select the default XMP profile for your memory.

4. The BCLK should be 100, leave it at that.

5. Set the CPU Ratio to 46.

6. Make sure your DRAM Frequency matches the XMP profile.

7. Set TPU to TPU II if you have liquid cooling.


Everything else should be left at default or Auto. Don't set any voltages. The XMP Profile will set the correct DRAM voltage. Reboot to test your overclock. You may want to run RealBench to test system stability and performance. I have pushed my overclock to 4.8 GHZ and XMP 3000 using this technique and found my system to be fast and stable. At 48/XMP 3000 your system will start to get warm. If you dont have good cooling, dont go there. Use RealBench to check your cooling effectiveness. I strongly suggest letting Q-Fan control manage your fans for you.


At 46/3000 I got the following Fire Strike Extreme score:




I also ran the RealBench, Valley and Heaven Benchmarks. My RealBench score was 81790. I will post more benchmark results later. I may go back up to 48/3000 but I just upgraded my video cards and I am being careful about heat and power consumption.


To sum up:


1. Set BIOS defaults.

2. Set XMP Profile.

3. Set CPU Ratio.

4. Set TPU to TPU II if you have liquid cooling.


I hope this helps!


Benchmark scores 46/2800:


3D Mark Run Primary Tests


Unigine Heaven Benchmark 4.0


FPS: 72.6

Score: 1829

Min FPS: 32.1

Max FPS: 149.0



Platform: Windows NT 6.2 (build 9200) 64bit

CPU model: Intel® Core i7-6700K CPU @ 4.00GHz (4007MHz) x4

GPU model: NVIDIA GeForce GTX 980 (4095MB) x2




Render: Direct3D11

Mode: 2560x1440 8xAA fullscreen

Preset Custom

Quality: Ultra

Tessellation: Extreme


Unigine Valley Benchmark 1.0


FPS: 74.9

Score: 3134

Min FPS: 36.3

Max FPS: 142.9




Windows 8 (build 9200) 64bit

CPU model: Intel® Core i7-6700K CPU @ 4.00GHz (4007MHz) x4

GPU model: NVIDIA GeForce GTX 980 (4095MB) x2



Render: Direct3D11

Mode: 2560x1440 8xAA fullscreen

Preset Custom

Quality: Ultra




I have just made the following upgrades:


Corsair Vengeance C70 case

3x Cougar 120 mm fans to replace the Corsair case fans

Corsair AX1200i Power Supply

Corsair H100i GTX Liquid Cooler


My system is running much cooler. The AX1200i/H100i GTX combination makes a huge difference in overclockability and stability. My system boots faster, runs much cooler and is much easier to overclock. I have now achieved the following stable overclock:


XMP 3000 Overclock Profile

48 Multiplier

100 BCLK


2x Strix 980 @1299


All other settings Auto.


4.8 GHz overclock. 10170 Firestrike Extreme @QHD score. Stable through hours of ultra settings gaming @QHD.


There is one major caveat. The Balanced or Performance profile in CorsairLink in order to achieve stability. Quiet is not sufficient. The i7 6700k is very sensitive to heat at high mulipliers or clock rates.


I hope this helps :)

Link to comment
Share on other sites

That's quiet the system you've put together there blackweb! You may want to edit your last statement for clarity,...should read "The Balanced or Performance profile in CorsairLink must be used in order to achieve stability."


Quick question. Do you run your case fans at low speed and let the H100i ramp up the fan speeds automatically. Or, do you have to run the balanced or performance profile for all fans all the time to keep temps under control.


Have you run ROG Realbench benchmark and stress test,...I'd be interested in your scores.

Link to comment
Share on other sites

Extremely BAD recommendation for overclocking. I recommend nobody do this. Some bad binned cpu have a very high voltage by defaults without overclocking. Yours is probably a good binned cpu. Motherboards will scale voltage when it's left on auto but clock speeds are increased. This can cause overvoltage and overheating. Both trates that kill cpu quickly. Also you are probably running way more voltage than what ur cpu actually needs to achieve said clock speed. For example. I set my cpu voltage to auto and set clocks to 4.2ghz it boots and sets voltage to 1.28v. By overclocking properly I run 4.5ghz at 1.26v 100% stable.
Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Create New...