First time OC /w i5-2500K
First time OC /w i5-2500K
Hey everyone,
I attempted overclocking for the first time today. I adjusted the clock speed of my 2500K to 4,4 GHz using core voltage 1.35 V on Prime95 stress testing. The temperatures rose slightly but stayed manageable. After about 10 minutes, all cores reached around 80°C. Then I lowered the core voltage to 1.3 V and reduced the clock speed to 4,2 GHz. Under full load, the temps dropped to about 75°C.
What are your thoughts? Is this temperature too high? I thought I could squeeze more performance from an i5-2500K, but as long as it doesn’t overheat, I’m okay with lower speeds.
I have a decent third-party cooler, the Arctic Cooling Freezer 13, so I’m not sure what’s causing the issue. Are these temperatures (70–75°C, max 78°C) harmful to the CPU? At idle, the cores are around 45°C, which seems fine.
Thanks in advance!
-mon4ro
Stock vcore operates between 1.2-1.22v during turbo mode. Most of the time it reaches 4-4.2ghz. At 1.35v the average was around 4.5ghz, which was typical. My 2500k is slightly above average at 1.3v for 4.6ghz. I don’t recommend auto; it causes overvoltage and could raise temperatures further. You should use offset, not fixed.
the i5-2500k is a very friendly OC chip. I just adjusted the voltage to auto and set the multiplier to 45. in prime95 it's around 1.3, in games it's a bit lower, sometimes it spikes to 1.35. it doesn't really matter, it doesn't seem to cause any issues.
it's also a strong chip that remains relevant today. I have a gtx 1070 (evga sc) and I mostly play ultra in everything, with performance ranging from 75fps (witcher 3) up to 90 fps (bf1) to 144 (doom). i'm fine with not upgrading for a while.
It's possible that applying fresh thermal paste (starting with a clean old paste from the CPU and Heatsink) could be beneficial. I'm considering giving it a try! It occurred to me but I was too lazy to start first.
Stock vcore operates between 1.2-1.22v during turbo mode. Most of the time it reaches 4-4.2ghz. At 1.35v the average was around 4.5ghz, which was typical. My 2500k is slightly above average at 1.3v for 4.6ghz. I don’t recommend auto; it causes overvoltage and could raise temperatures further. Are you using offset or fixed? You should use offset.
Stock vcore operates between 1.2-1.22v during turbo, often reaching 4-4.2ghz. At 4.5ghz it averaged around 1.35v, which was typical for the average. My 2500k is slightly above average at 1.3v for 4.6ghz. I don’t recommend auto; it causes overvoltage and could raise temperatures further. You’re using offset or fixed? You should use offset.
Mon4ro shared his experience about stock vcore during turbo mode. He noted it typically reaches 4-4.2ghz, with 1.35v being the average for 4.5ghz. His 2500k model performs slightly better than average at 1.3v for 4.6ghz. He advises against using auto settings as they can cause overvoltage and higher temperatures. He mentions he uses fixed voltage and is considering switching to offset. He also confirmed using fixed was stable, with temperatures staying under 60°C in a warm room. His setup includes a zalman water AIO and a 120mm fat radiator. He suggests that even if you don’t need auto, it’s better not to, as his biostar tz77xe3 adjusts the voltage to maintain stability.