Max OC on 4790K
Max OC on 4790K
Hello
I'm looking for details on the maximum operating voltage for a 4790K on AIO coolers such as H80iV2 or H100i. Right now I'm running it at 4.7 volts with 1.248V on air, and it handles up to 38°C during idle and reaches 70°C under load. I plan to install the H80i V2 today and need this information.
I want to know what voltage and core multiplier settings are safe, whether I can reach around 5 GHz, and how to determine the correct voltage safely. I've adjusted the voltage from 4.5 GHz to 4.7 GHz while keeping it at 1.248V; I'm curious about the steps or increments needed to increase the voltage.
It varies by your particular chip. Each one behaves differently.
Typically, AIO water cooling offers only a small advantage over good air coolers.
Begin with the base voltage and gradually raise it together with clock speed until temperatures rise excessively.
Once stability tests are complete, reduce the clock speed slightly to maintain consistency.
Hello
I’m looking for information on the maximum operating voltage for a 4790K on AIO coolers such as H80iV2 or H100i. I’m currently running my 4790K at 4.7 volts and 1.248V with air cooling. Idle temps are around 38°C, and max load reached 70 during Cinabench testing. I plan to install an H80i V2 today and would like to know the recommended voltage and core multiplier settings. Can I aim for around 5 GHz? The games I play—like iRacing and Assetto Corsa—require only 2 cores each.
Just keep pushing it, but don’t exceed 1.35V or go beyond 80–85°C under full load. Temperatures seem manageable now; avoid higher values. Stability tests with Prime95 or an IBT run (50 passes, ~10 minutes) are recommended. Games alone won’t fully reveal stability issues—system crashes and frequent reinstalls every few months suggest problems.
Max voltage is commonly thought to be below 1.325-1.35V, though opinions vary. Reaching 5GHz depends largely on circumstances. When DC was introduced, Intel suggested it was achievable, but most people ended up capping at around 4.8GHz or 4.9GHz. AIO liquid cooling might limit VRM performance at higher voltages, potentially causing instability if you increase them. The H80iV2 and H100i are showing different results—an H100i generally offers superior cooling.
The issue with AIO coolers lies in their radiator dimensions. They generally offer a comparable or slightly bigger surface for heat dissipation than air coolers, which isn't enough to significantly improve performance.
Thank you, according to the Intel website, for considering a 100-minute adjustment to boost voltage between 0.040 and 0.050, with a maximum of 1.3V for the 4790K or 22N chipset.
It seems you're suggesting a calm approach. Just take your time and avoid haste.