the i5 6600k when overclocked to 4.4 ghz remains stable in auto mode.
the i5 6600k when overclocked to 4.4 ghz remains stable in auto mode.
Hi, your current setup with a 4.4 GHz frequency and auto PHC voltage is functioning as expected, maintaining a stable voltage between 1.1 and 1.23 volts. The temperatures across all four cores remain within the acceptable range. Since the readings have not consistently reached 1.25V, you might consider adjusting the PHC voltage to 1.24 or keeping it at auto. This should help maintain consistency without unnecessary changes.
Coverion :
Core 1 = 26 -58 degrees celsius, Core 2 =27>>55, Core 3 = 24 >>54, Core 4 = 25>>53.
You are welcome...
To further lower the power—since it is lost as heat and thus raises temperature—I adjusted the settings accordingly:
PSH = 1.000 V → VCCIO = 1.000 V → VCCSA = 1.150 V (close to default, but I was surprised)
After running tests for over two hours on Prime95 Blend without any problems, I stopped further adjustments. This approach cut my power and temperatures by about 10%. Gradually reducing the values from VCCIO/VCCSA = 1.250/1.250 V down to a very low 1.000/1.150 V still decreased power, although on one occasion setting VCCSA to 1.100 V by curiosity caused a significant increase. I think that’s what happened...
Download and execute OCCT for a stress test on the processor, then submit the voltage and temperatures observed during operation.
Coverion :
Hi, I set the ghz to 4.4 ghz and left the PHC voltage at auto and it is running between 1.1 -1.23 volts. Temperature is between 26 -28 (max temp is 35,42,35,34 respectively)on the 4 cores. I was wondering if I should set the PHC volt to 1.24 or leave it at auto, since the values have not once reached 1.25V?
Voltages under Auto are usually going uselessly high. I get 4.6 GHz stable after manually setting VCore to 1.355V in the BIOS and PCH at 1.000 V (like leaving it at auto) with a budget single fan cooler and not a particularly well performing CPU (just average).
As an example, under an ambient temp of 21.9 C, I just finished playing BF4 with everything set to Ultra for 2 hours on a 24" Dell (1920x1200), and according to CPUID HWMonitor, my CPU package (average) temp maxed at 59 C, CPU utilisation maxed at 100%, both MSI GTX 970 (SLI) cards maxed at 67 C with GPU maxed at 99% and fans at 1160 RPMs, CPU cooler (Cooler Master Hyper 212 X) fan maxed at 1442 RPMs (rated 2000 RPM max).
This is a really simple OC though (no sweat). I didn't touch BCLK, CPU current, VCCIO or VCCSA, or anything like that - just optimised the Fractal Design Arc Midi R2 case airflow, changed two sets of 8 really basic parameters in the BIOS of my Gigabyte GA-Z170XP-SLI MoBo and... voila!
Case fans (15 in total) set as shown in this picture: hhttp://imageshack.com/a/img923/3196/PjaqTS.png
Here are the only settings I changed:
----> 8 for the CPU (Intel i5 6600K):
[1]-CPU VCore at 1.355 V,
[2]-CPU Core Ratio at 46,
[3]-Uncore Ratio at 45,
[4]-FCLK at 1 GHz,
[5]-Extreme Memory Profile (X.M.P.) on "Profile 1",
[6]-PCH at 1.000 V,
[7]-CPU VCore Loadline Calibration (LLC) on High, and
[8]-Internal Graphics Disabled (using graphics cards instead), and
-----> 8 for the memory (4 x 4 GB of Kingston HyperX Fury C14 2133 MHz):
[9]-System Memory Multiplier (32),
[10]-CAS Latency (15),
[11]-tRCD (17),
[12]-tRP (17),
[13]-tRAS (28),
[14]-DRAM Voltage (CH A/B) 1.30 V (from 1.28 V stable to ensure increased stability),
[15]-Memory Enhancement Settings to "Relax OC", and
[16]-Command Rate (tCMD) 1.
Too easy... have fun
Wow, the responses came fast—thanks! I received a CPU VCORE at 0.23V which is above 1.27v, and a VBAT of 1.55 which is above 1.55v.
Core 1 equals 26 to -58 degrees Celsius, Core 2 is 27 to 55, Core 3 stands at 24 to 54, and Core 4 measures 25 to 53.
Coverion :
Core 1 = 26 -58 degrees celsius, Core 2 =27>>55, Core 3 = 24 >>54, Core 4 = 25>>53.
You are welcome...
To further lower the power (which is lost as heat... thus raising the temperature), I adjusted the following settings:
PSH = 1.000 V -> VCCIO = 1.000 V -> VCCSA = 1.150 V (close to the default, but I was surprised)
After testing for over two hours on Prime95 Blend test without any issues, I decided to keep it as is. This reduces power and temperatures by about 10 %. Gradually decreasing from VCCIO/VCCSA = 1.250/1.250 V down to a very low 1.000/1.150 V, power continued to drop but one day I tried VCCSA at 1.100 V (out of curiosity) and the impact on power was significant (increased). I think I hit the limits and returned to VCCSA = 1.150 V. Cinebench R15 performance remained stable at 767. All fine.
However, I truly believe it is MUCH better to keep PCH/VCCIO/VCCSA at their default Auto/Auto/Auto settings, otherwise manually set voltages don’t automatically decrease when idle or under load (which is most of the time), and this stops the overall temperature from dropping. So I left them all three at Auto/Auto/Auto and temperatures improved (simplicity usually helps).
--> Consider running a heat test for Prime95 (its first option at the top) for at least 30 minutes and monitor the temps. I’d like to hear your thoughts. I’m still operating at 4.6 GHz under CPU VCore or 1.355 V. My cooling can’t handle the temps at 4.7 GHz under VCore of 1.40 V (I tried - it shut down above 85°C). So I stick to 4.6 GHz, another limit. One must understand his limits ;-)...