Is it a secure and effective increase in performance?
Is it a secure and effective increase in performance?
CPU - 6600k
Mobo -Maximus IX Hero
Ram - Corsair Vengence 3000mhz
GPU - EVGA 1070 FTW2
Cooling - Corsair 120mm AIO
I recently overclocked my 6600k to 4.5ghz at 1.3v, but temperatures are reaching about 65°C in prime95 without any crashes. Is this a suitable overclock for the 6600k?
Sure, it's quite good. The temperatures are manageable and the performance is solid for the CPU.
Thanks for the response. Considering switching to a 280mm radiator if possible.
I agree, the conditions are favorable. Keeping it below 80°C while running Prime95 for some time is excellent.
That's a good point. Ran prime 95 for 24 hours just to confirm its stability.
Your OC will be constrained by the 120mm CLC... a $25 Hyper 212 performs better than the H55 in this regard.
2. Regarding your CPU:
Average OC 4.68
Median OC 4.70
Average Vcore 1.38
Median Vcore 1.38
3. The P95 has served well beyond its prime. We continue to rely on it to raise temperatures quickly for stability, but it’s now obsolete.
a) Those who persist in using it should stick with the older version (26.6). The voltage boost from AVX and other modern instructions can harm the CPU.
b) Yet the value is questionable—does it matter if a 24-hour P95 stable OC fails during intensive multitasking tests where modern instructions are active?
c) P95 demands a significant performance from your CPU that you won’t experience again. Your 4.5 OC might reach 4.6 or 4.7 under realistic, multi-tasking workloads using genuine applications. It’s like comparing a single tennis ball machine serving at 150 mph to one machine firing balls unpredictably—each has its own risks.
If your aim is to list your OC on overclocking forums, then P95 is the right choice. But if you want smooth operation of programs and games, I suggest using RoG Real Bench with HWiNFO monitoring.
For cooling upgrades... no, two 120mm or two 140mm CLC units will outperform air coolers like the Noctua NH-D15. To approach that level, they need to be at least 12 times more powerful. This is due to weak pumps (0.11 gpm), inefficient aluminum radiators, and fans that can’t compensate for these shortcomings.
If you’re after water cooling—such as the Kraken X62—be mindful that the Swiftech H240 X2 is a factory-assembled loop WC set. It’s quieter, provides better cooling, uses copper/brass radiators, includes a built-in reservoir, and has a 1.0 gpm pump. You can expand it with extra water blocks (like a graphics card) and radiators. It’s also $30 cheaper than the Kraken X62.
http://www.swiftech.com/h240x2.aspx
See 23:00
https://www.youtube.com/watch?v=PYKdKVxbnp8&t=1386s
A Swiftech H240 X2 is 69C @ 56dbA (twice as loud, still loses 5C).
The Swiftech H100i is 64C @ 46dbA.
At 24:30 they tested the Swiftech at full fan speed and it still outperformed all other coolers—even the H100i, which was 11.3 times louder but still lost. The only cooler that matched its performance was the Noctua air cooler, which under the same noise level fell short by 1C.