How to fix memory instability on Soyo SY-Classic B660M for Hitman 3?
Right in the middle of a stealth kill, the screen would freeze for about 0.3 seconds. It's a tiny hitch, but it completely ruins the rhythm of the game. I used a diagnostic tool and found that with XMP enabled at 3200MHz, the Soyo SY-Classic B660M had some nasty voltage ripple around 1.35V, leading to occasional memory parity errors. I tried dropping the frequency to 2666MHz, which stopped the stutters but cost me about 12 FPS—I wasn't about to settle for that. I went back into the BIOS, bumped the RAM voltage to 1.38V, and loosened the tRFC timing to 580 cycles. After 4 passes of MemTest86, the 8 errors I was seeing were completely gone. The RAM temp hit 55℃ initially, so I improved my case airflow to bring it down to 42-46℃. CPU temps are steady at 60-66℃, and memory latency tests show no performance loss. Memory temps are now a stable 58-63℃.
