[SOLVED] DDR3600 showing as DDR2400

[Lars Ericson]

I built a PC with the following configuration: https://pcpartpicker.com/list/Wxgw4q

Key points: core i9-9900K, Gigabyte Z390 Aorus Master, 2x16GB DDR4-3600 RAM from Kingston.

When I boot my PC, without making any special BIOS changes, it shows DDR-2400.

If I manually change the BIOS setting from "Auto" to DDR-3600, the PC won't boot to Windows, it eventually comes back to BIOS with a complaint.

Question: How to I get my rig up to 3600MhZ on the RAM?

 

[Calvin7]

i9-9900K
Supported memory speed is 2666MHz. Try profile #2 with 3000MHz or manually input slower memory clock speed, DRAM timings, and DRAM voltage.

You may need to overclock the CPU to run at 3600MHz. I didn't think running at that speed made much difference in performance over some of the slower speeds 3000, 3200.

HX436C17PB3K2/32 HX436C17PB3K2/32 Memory ... - Kingston

•JEDEC: DDR4-2400 CL17-17-17 @1.2V
•XMP Profile #1: DDR4-3600 CL17-19-19 @1.35V
•XMP Profile #2: DDR4-3000 CL15-17-17 @1.35V

 

[Lars Ericson]

UPDATE: It turned out I just had to turn XMP profile on in the BIOS. I thought I'd done that but apparently not. Just one button click, don't have to know anything about 19-19-19-whatever. I figured this out after running this benchmark code which gave a report that basically said "Hey, turn your XMP on!":https://www.userbenchmark.com/UserRun/15529806