Search the Community

This will be an ongoing project. I just started diving into Haswell overclocking with the i5-4670K (and also Devil's Canyon i5-4690K), and I'm not liking it as much as Ivy Bridge's i5-3570K. Heat is a huge factor for holding back overclocking stability, and it seems that Intel isn't going to change back to soldering the IHS to the die anytime soon. So, from delidding Ivy Bridge CPU's alone, heat isn't a limiting factor. You can see from my "This is why I like delidding Ivy Bridge CPU's" thread. Haswell and Devil's Canyon, on the other hand, get pretty hot. An overclock to 4.4GHz at 1.25V's is pretty much average, and you can expect temperatures over 90C during 100% CPU load stability tests with a good $70+ cooling solution (will edit after testing). What happens if we delid it, and then also lap the CPU? How much of a difference will each of those modifications make? Test Equipment and Setup: i5-4670K with 4x4GB memory (more details later) ASUS Z97m-Plus Motherboard (more details later) Overclock to 4.4GHz at 1.25V's with 1:1 Cache ratio (more details later) Hammer and vice method for delidding Hand sanding from 400 grit to 2,500 grit for CPU lapping Bosch ROS20VS (orbital sander) from 800 grit to 12,000 grit for CPU lapping Hopkins 09515 Pocket Surface Level Corsair H80 in push/pull (fan details later) Apogee HD CPU Waterblock and radiator in push/pull (radiator and fan details later) Noctua NT-H1 for the die and IHS, and also for the CPU and CPU cooler (might change) Testing Method: 2 hours of Prime95 Blend Tests (might change - I wouldn't want to burn out my CPU) Real Temp 3.7 for temperature monitoring Test 1: Default i5-4670K CPU (not delidded or lapped) on Corsair H80 Default i5-4670K CPU (not delidded or lapped) on Custom Watercooling Test 2: Delidded i5-4670K on Corsair H80 Delidded i5-4670K on Custom Watercooling Test 3: Delidded and hand lapped to 2500 grit i5-4670K on Corsair H80 Delidded and hand lapped to 2500 grit i5-4670K on Custom Watercooling Test 4: Delidded and machine lapped to 12,000 grit i5-4670K on Corsair H80 Delidded and machine lapped to 12,000 grit i5-4670K on Custom Watercooling Test 5: Delidded and machine lapped to 12,000 grit i5-4670K on Corsair H80 with higher overclocking and voltages Delidded and machine lapped to 12,000 grit i5-4670K on Custom Watercooling with higher overclocking and voltages Conclusion and Results: TBD

I just upgraded pc, have 850watt ocz power supply msi z87-g45 gaming motherboard core i5 4670k cpu and 2 4gb sticks of corsair vengeance running on the xmp profile at the 1600 speed, in slots 2 and 4. cpu cooler is phantec PH-TC12DX graphics card is nvidia 660ti the pc is almost solely used for gaming, i have got a stable overclock of 4.4 ghz after reading a ton and watching many videos, temps are what i think are good, aida64 stress test with stress cpu, stress fpu and stress cache turned on, only hits 60c. on cores at most and seems to work fine. my concern is only that i have no idea if everything i have set is safe, and if there is something i could set that would make it noticeably better. dont even really feel i need the 4.4 yet, but want to have the profile saved for when i do want to use it. I will post my currents settings to make it easy to review what i have come up with, just let me know if i have any major mistakes and for the 4.4, does it look good, it seems that if i lower any of the voltages that i have set, i crash so i think i have them as low as they can get with my currents settings anyway. If it seems like i could set up another profile even higher than the 4.4, tips are gladly accepted on which settings and in what order i would want to change them, but that is only if you want to chime in on that, mainly, i want my 4.4 to be the best it can be! cpu base clock (mhz) 100.000 current cpu base clock strap 1.000 adjust cpu base clock strap auto cpu base clock apply mode next boot cpu pcie pll auto filter pll auto adjust cpu ratio 44.000 adjusted cpu frequency 4400 mhz cpu ratio mode dynamic mode eist enabled intel turbo boost enabled enhanced turbo auto legacy tweaking disabled adjust ring ratio 43.000 adjusted ring frequency 4300 mhz dram reference clock auto dram frequency auto adjusted dram frequency 1600 mhz extreme memory profile (x.m.p.) enabled load memory presets disabled dram timing mode auto memory fast boot auto svid communication auto vccin voltage 1.860 cpu core voltage mode override cpu core voltage 1.230 cpu core voltage offset mode auto cpu core voltage offset auto cpu ring voltage mode adaptive mode cpu ring voltage 1.190 cpu ring voltage offset mode auto cpu ring voltage offset auto cpu sa voltage offset mode auto cpu sa voltage offset auto cpu io analog voltage offset mode auto cpu io analog voltage offset auto cpu io digital voltage offset mode auto cpu io digital voltage offset auto internal vr ovp ocp protection auto internal vr effeciency management disabled dram voltage auto pch 1.05 voltage auto pch 1.5 voltage auto cpu memory changed detect enabled

Hey all, just found this forum and had a read around over the past week in hopes of overclocking my 4670k successfully. I am basically brand new to this and don't 100 percent know what settings I am even looking at because they seem to be named differently on my asrock board compared to some guides I have seen. Anyway down to business, I am trying to get a stable overclock of atleast 4.2ghz but no matter what settings I try, prime95 will crash within seconds of starting a test, before temps even get past the 45 degree mark. Here are some pics, chances are I am doing something horribly wrong. Any help would be appreciated, thank you.