No, not all Haswell/Devils Canyon CPUs utilize the same IHS. Each chip may have different IHS configurations.
No, not all Haswell/Devils Canyon CPUs utilize the same IHS. Each chip may have different IHS configurations.
I have an overclocked 4790k with a scratch on the IHS, which could slightly raise temperatures. The CPU is delidded, and my 4570 is also delidded. The 4570 has a clean IHS with no scratches. Could switching the 4570 IHS to my 4790k cause a temperature drop? Are the IHS identical across all Haswell/DC CPUs (except for the label text)?
The scratch needs to be extremely large to notice any impact on temperatures. I mean a significant chunk removed from the center. Even a deep cut won’t help much. If you’re not convinced, try running the CPU at full speed—it might actually raise temps while cleaning up the scratch, though this isn’t ideal for air-cooled boards and only offers slight benefit for water coolers. Doing this won’t be worth the time or effort.
It was created specifically to enhance heat transfer in electronic components.