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Need help with new RAM speed/timings

Red_Machine

Red_Machine

Joined
Oct 1, 2010
Messages
2,366 (0.44/day)
Location
Marlow, ENGLAND
System Specs
System Name Chachamaru-IV | Retro Battlestation
Processor AMD Ryzen 9 5900X | Intel Pentium II 450MHz
Motherboard ASUS ROG STRIX X570-F Gaming | MSI MS-6116 (Intel 440BX chipset)
Cooling Noctua NH-D15 SE-AM4
Memory 32GB Corsair DDR4-3000 (16-20-20-38) | 512MB PC133 SDRAM
Video Card(s) nVIDIA GeForce RTX 4070 FE | 3dfx Voodoo3 3000
Storage 1TB WD_Black SN850 SSD (OS), 3TB Toshiba (Storage), 8TB Seagate FireCuda/2TB WD_Black SN580X (Steam)
Display(s) Samsung Odyssey G5 27" @ 1440p144 & Dell U2412M @ 1200p60
Case SilverStone Seta A1 | Beige box
Audio Device(s) Creative Sound Blaster AE-7, Edifier speakers, Grado Labs SR80 X headphones | Sound Blaster AWE64
Power Supply EVGA Supernova 750 G2 | 250W ASETEC
Mouse MX Master 3S| Microsoft Serial Mouse v2.0A
Keyboard Vortex Race3 | Dell AT102W
Software Microsoft Windows 11 Pro | Microsoft Windows 98SE
I have a Ryzen 9 5900X CPU, and an ASUS ROG STRIX X570-F Gaming motherboard. Just bought some Corsair CMK64GX4M2D3600C18 RAM, after checking the compatibility list provided by ASUS, but I can't get it to post with DOCP enabled. Auto mode works fine, but it's obviously running at baseline speed. I have manually increased the speed to 3200MHz, and can't get it to post at any higher speed. Could someone help me out with this? I saw in a Reddit post that someone found out their similar issue was caused by their CPU's memory controller not being capable of running their RAM at its rated speed, and a quick check of the TPU hardware database suggests the memory controller in the 5900X is limited to 3200MHz. Is this actually the case? What speed, timings, and voltage should I be running this RAM at to get the best performance with my setup? Should I just run it at the timings of the 3200MHz RAM in the same series?

Thanks.
 
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Zen 3 should be able to do higher than 3200MT/s with no issues, this is odd. Good Zen 3 chips have no issues doing 3800MT/s or 3866MT/s if lucky, with the fabric synchronized with the memory controller. Have you tried a CMOS reset to load all defaults and enable XMP again after?
Red_Machine said:
What speed, timings, and voltage should I be running this RAM at to get the best performance with my setup? Should I just run it at the timings of the 3200MHz RAM in the same series?
Click to expand...
This is tricky to answer without knowing the exact ICs this memory kit comes with, if they are in a single or dual rank configuration... Corsair likes to use a bit of anything for their memory sticks, the only way for you to know and then tune your system accordingly is to read the version number on your sticks and figure out what it is with this list : https://www.reddit.com/r/overclocking/wiki/ram/ddr4/#wiki_corsair
 
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