4790K @ 4.8 Ghz OC Help
4790K @ 4.8 Ghz OC Help
Hello,
I am experiencing difficulties running my 4790k at 4.6 Ghz with vCore 1.140; BCLK 100 Mhz and a Cache Ratio of 40x all stable. The maximum temperature stays around 65°C, and I’m using Cinebench for testing. My issue is that even at 4.7 Ghz with a 1.3 Vcore it crashes during benchmarking.
I’m relatively new to overclocking and have only performed basic OC in the past. I’m trying to reach 4.8 Ghz on this CPU, but nothing seems to work. I would normally boot at 5.0 Ghz, but only 4.6 Ghz survives testing. Since I’m not very experienced with Cache Ratio and Voltage, I want to understand what might be going wrong and which settings I should try next. Is it my hardware that’s preventing the CPU from exceeding its limits?
I use ASUS AI Suite for OC testing on the go, and once I find a stable setting I transfer them to BIOS.
Intel Core i7 4790k
ASUS Z97K
Corsair Vengeance 8 GB x 2 @ 1600 Mhz
Hyper 212x/Corsair H100i (currently on H100i, working at 4.6 with 212x)
I'm just trying to overclock for fun. So far I haven't seen any games or software demanding that much CPU power. I'm curious if it's connected to cache settings I might not be fine with. P.S. Sorry I missed my chance by voting wrong.
It really depends on how much you value your machine and its components. You're doing just fine at 4.6Ghz @ 1.14v, try setting the CPU to 4.7Ghz and gradually increase the voltage until it stabilizes during testing. If you don't feel comfortable going above 1.3v, then you've hit your limit and won't be able to reach 4.7ghz safely.
When overclocking, you have to accept the risks—either enjoy what you have or push for that higher speed and risk damaging parts.
I learned this the hard way with...
This guide from CompuTronix should assist you.
When adjusting your processor close to its maximum overclock, remember that a 100 MHz boost requires roughly a 50 millivolt increase (0.050) to keep things stable. If a 75 to 100 millivolt or more is necessary for the next stable 100 MHz jump, it indicates your processor has exceeded its limits.
Also consider that silicon variation affects overclocking performance—some CPUs handle it better than others even with identical hardware (such as different CPU coolers or motherboards).
When using Prime95 for testing, ensure you're using version 26.6 and typically run Small FFTs for 15 to 30 minutes.
I'm glad you're here. The typical voltage at 4.7Ghz is about 1.450v, and most CPUs will struggle to reach the next 100Mhz, which requires a lot more voltage and appears to be a significant challenge. You need to consider whether the added speed justifies the increased power consumption, heat generation, and reduced lifespan of the CPU.
I'm just trying to change things up a bit. So far, I haven't seen any games or software using CPU that much. I'm curious if this is connected to cache settings I might not be tweaking properly.
P.S. Sorry for accidentally rejecting the previous answer.
I'm just trying to overclock for fun... So far I haven't seen any games or software using CPU that much. I'm curious if it's connected to cache settings I might not be fine with.
P.S. Sorry I missed the answer by accident.
It really depends on how much you value your machine and its components. You're doing okay at 4.6Ghz @ 1.14v, just set the CPU to 4.7Ghz and gradually increase the voltage until it stabilizes during testing. If you don't feel comfortable going above 1.3v, then you've hit your limit and won't be able to reach 4.7ghz.
When overclocking, you have to accept the risks—either live with what you have or push for that 4.7Ghz and risk damaging parts.
I learned this the hard way with an i7-950; it ran smoothly at 4.6Ghz but I wanted to test higher. At 4.7Ghz it broke the motherboard, costing me about $400, and a waterblock helped bring it up to 4.9Ghz.