Techspot/Hardware Unboxed managed to kill their 3900X with overclocking…
On an even more disappointing note, we somehow managed to end the life of our 3900X sample at this stage of the review. We don’t recall exactly what settings were applied, but we know we hadn’t manually adjusted voltages yet. We believe after testing the 4.3 GHz overclock with auto voltage, we increased the LLC to see what impact that had on temperatures and during our first CB20 pass the system crashed and reset, and never booted up again.
The CPU now gets stuck at code 07 after microcode. We tried running the chip on a different X570 board among other tests before sadly declaring it dead. AMD says no other reviews had managed to kill their 3900X so we’re just special or unlucky, your pick. AMD has sent us a replacement but in the meantime we were unable to test the 3900X on B450 boards, or include it in the IPC test with a few cores disabled in each chiplet.
From just the early benchmarks, it appears the 3700x, which is $329, is only like 4.5% slower then a near $500 9900k. And a 3900x basically performs like a Xeon with its multicore and does great with streaming.