Le nouveau processeur semble se dégrader rapidement.
Le nouveau processeur semble se dégrader rapidement.
In short, I purchased a "100% new" i7-6950X to upgrade my main system's i7-6850K. What arrived was a CPU that looks well-maintained and appears fresh, though it likely had previous installation marks—such as socket pins on the pads and residual thermal paste in the holes. I reached out to the seller right away, who reassured me that any residue or marks were just from testing before shipping, not from actual use. Here’s the listing for anyone interested: https://www.aliexpress.us/item/325680749...dp_ext_f={"order"%3A"2"%2C"eval"%3A"1"}&pdp_npi=4%40dis!USD!218.44!218.44!!!1563.66!1563.66!%40210337bc17479331808435976e1636!12000041770821832!sea!US!6292277706!X&curPageLogUid=4K3kuq9DgItf&utparam-url=scene%3Asearch|query_from%3A
I was hesitant to send it back after paying a premium for a new CPU, but with a 3-month return window, I decided to try it. At first, the core voltage stayed steady at around 85 mV undervolt, which is typical for Broadwell-E CPUs. The cache never held stable below about 60 mV undervolt. Over time, I gradually lowered the core voltage to 64 mV to keep things stable, but it now crashes instantly. At this rate, it’s unlikely to remain stable at stock settings within a year.
Compared to my 2016 i7-6850K, which ran nonstop for years with only minor undervolting (74–76 mV core and cache), this one shows no signs of wear. It handled heavy overclocking, long renders, gaming, and Prime95 without issues. The cooling system performed well, staying under 45°C, and the CPU never exceeded safe limits except briefly during short tests.
The unusual behavior I noticed is that pushing it beyond safe limits caused a blue screen or hard crash, but it would always restart normally afterward. This suggests a possible hardware issue rather than just thermal stress.
Possible explanations include previous damage before purchase, or accelerated aging due to higher usage. Either way, sending it back for a full refund or a verified new unit seems like the safest path. I’m open to suggestions, but I want to avoid risking another defective CPU.