MB: MB ATX Asus ROG Crosshair VIII Hero (Wi-Fi) PSU: ATX Asus ROG Strix 850W 80 Plus Gold Full Modular CPU Cooler: iCUE H100i H115i H150i Elite Capellix CPU: AMD Ryzen 9 5900x Memory Bios OC: D.O.C.P. Bios Version: Last stable version 4006 RAM Memory Kit: G.Skill Trident Z RGB DDR4-4800 CL20-30-30-50 1.55V 32GB (2x16GB) - F4-4800C20D-32GTZR - F4-4800C20D-32GTZR - G.SKILL International Enterprise Co., Ltd.
Is it possible to reach 4800mhz with my setup above? What should I change?
Mobo accept setup even higher than 4800mhz OC. I tried the standard D.O.C.P. profile and my computer keeps rebooting reporting as unstable configuration.
Standard D.O.C.P profile: Voltage: 1.55v (1.53v at bios read) Frequency: 4800mhz Latency: 20-30-30-50
I was able to reach 4400mhz with the same configuration above, but benchmark reported 1 memory error and then I came down to 4333mhz.
I am currently using: Voltage: 1.55v (1.53v at bios read) Memory Frequency: 4333mhz BCLK Frequency: 100.0000 FCLK Frequency: Auto (2166mhz at benchmark read) Latency: 18-27-27-47 PowerDown: Disabled BGS: Disabled BGS Alt: Enabled GDM: Enabled VSOC: Auto (1.11v at bios read)
Memories are at slot B2 (16GB) and A2 (16GB) as specified at motherboard manual.
Is there something else that I could do to reach the 4800mhz having my system stable? Or any other configuration to have a better OC setup even bellow the 4800mhz?
Speeds above 4000MHz require Gear 2 which runs the Fabric Clock asynchronously. The best CPU performance is found running in 1:1 ratio with the FCLK (Fabric Clock). 4800 is also the maximum validated ratio for the Crosshair VIII. Even if wanting to run asynchronously with FCLK, I'd normally recommend buying a kit below the maximum validation for an easier time tuning.
I would aim for a tight 3600-3866 if the CPU will allow you.