Optimal overclock settings for 4790k on Cryorig C7?
Optimal overclock settings for 4790k on Cryorig C7?
Hi there:
4790k
Cryorig C7 - 92 mm / TDP 100W
16 GB DDR3 1600 Mhz CL8 Crucial Tactical Tracers
Asus Maximus Impact VII Z97
Corsair CX600W
EVGA GTX 970 SSC ACX 2.0
I’m certain that at 1.196v the CPU cooler will cope with the heat – I had to set it manually since the board would otherwise overvolt the CPU and reach temperatures above 90°C in some cases. So I just adjusted it. I enabled XMP for the RAM (1600 MHz CL8 1.5V) and set the CPU voltage around 1.196 (1.2V) during stress tests. Under load, I stayed below 75°C during the Intel burn test at max power, and around 65°C in games.
My question:
What adjustments should I make in my BIOS to achieve a stable 4.5 GHz operation at 1.2V ± a few points? Also, it should still drop the frequency and voltage proportionally with the workload? And importantly, must I avoid exceeding the voltage limits I previously configured?
Thank you.
Every chip behaves uniquely. 4.5 Ghz at 1.200V is quite challenging for a consistent overclock. I operate at 4.6 and 1.284V, but if you're at 65 in games, that's already a bit above what I prefer. First, determine the voltage that ensures a steady 4.5Ghz overclock or the speed you can achieve at 1.200V. Do I misinterpret your question?
You may consider selecting another PSU later, as the CX series isn't particularly suitable for an OCG PSU.
I see. Thank you.
I was assuming the 4.4 turbo setting with stability at 1.1196 was sufficient, but now I understand that turbo boost typically works around 4.4 on one core and 4.3 on two or more. Should I also turn off turbo boost and aim for 4.5 across all cores?
From another angle, when testing temperatures in games, I plan to reduce the voltage to find out how much I can lower it before stability drops.
My main concern is deciding a maximum voltage I want while still allowing the CPU to adjust its clock speed (GHz and voltage) under load. If I stick with the stock settings and auto-voltage, I’m getting readings as high as 1.360V—far too high. That’s surprising because it didn’t restart properly and the small C7 kept it at 90°C.
Anyway, I hope you understand my intentions.
Yes, the PSU is only a temporary fix. It will be replaced in a few days.
The simplest approach is to locate a suitable stable voltage that meets your needs. Once found, we can move to an Adaptive Overclock, which will bring idle speeds and voltages back closer to their original levels, though it may be more challenging to determine the maximum using extensive testing.
You may consider switching to a different PSU later, as the CX line isn't the most ideal choice for an OC PSU. This is the usual view, though it varies by model. I've been using the 750M for almost a year without any issues, running my O/C 4690K and even overclocking factory supercloned EVGA 970s in SLI. The CX750M appears to perform slightly better than other CX models, especially regarding ripple control.
This review highlights its overheating problems and limited power output, making it unsuitable compared to the CX750M for a high-performance setup. I wouldn't consider an EVGA B2-0750-VR worth the money at any reasonable price.
You might consider upgrading to a different PSU in the future, as the CX series isn't the best choice for OC'ing a PSU.
Some people might not realize that the i7-4790K at 4.7ghz and the FX8350 at 4.8ghz on CX PSUs work perfectly fine, and they often perform better than most are acknowledged.
No one should have to spend huge sums for a basic PSU that doesn't last long—life span isn't guaranteed by price alone.
Unfortunately, just like every other PC component, everyone's experience can change over time.
I've used several Corsair PSUs and never faced problems with their CX line, even with large overclocks.