Unable to achieve a command rate of 1N on Z370 Micro ATX motherboard
Unable to achieve a command rate of 1N on Z370 Micro ATX motherboard
Hi, I just upgraded my RAM from a DDR4 F4-3200C16D-16GTZB to F4-3600C14D-32GTZNA. Everything seems fine, and the DRAM won’t reach a Command Rate of 1N. If I attempt it, it won’t post. Should I follow the suggestion from the HardwareCanucks forum—raising the voltage to enable 1N and by how much? These RAM models aren’t listed on QVL or EVGA’s site either. Any advice would be appreciated.
F4-3200C16D-16GTZB Specs:
Capacity: 16GB (8GBx2)
Tested Speed (XMP): 3200 MT/s
Tested Latency (XMP): 16-18-18-38
Tested Voltage (XMP): 1.35V
F4-3600C14D-32GTZNA Specs:
Capacity: 32GB (16GBx2)
Tested Speed (XMP): 3600 MT/s
Tested Latency (XMP): 14-14-14-34
Tested Voltage (XMP): 1.45V
I have:
Intel Core I7-9700k
EVGA Z370 Micro ATX
Noctua NH-D14
Nvidia GTX 1080 Ti FE
https://hardwarecanucks.com/forum/thread...eds.79520/
Why can’t these DDR4 3600 CL14 achieve a 1T command rate? (Alderlake 12900k)
Asus rog strix z690-gaming A DDR4 motherboard, and the RAM I bought were: https://www.corsair.com/ca/en/Categories...tech-specs
Memory Size 16GB (2 x 8GB)
Tested Latency 14-16-16-36
Tested Voltage 1.45
Tested Speed...
That 3600 is definitely a B Die. In fact, Samsung B dies, Micron 8Gbit Rev E and 16Gbit rev B can run pure 1T (no gear down mode on both Intel and AMD). Hynix DJR might work too, but it's inconsistent. You should probably adjust the tRFC to 630 and try CL16 Flat with XMP timings. Keep in mind you're running two ranks on B dies.
Command rate is influenced by RAM architecture based on the number of chip ranks. Attempting to modify this should be avoided.
That 3600 is definitely a B Die. In fact, Samsung B dies, Micron 8Gbit Rev E and 16Gbit rev B can run pure 1T without any gear down mode on both Intel and AMD. Hynix DJR might work too, but it’s inconsistent. You should probably adjust the tRFC to 630 and use CL16 Flat with XMP timings. Keep in mind you’re running two ranks on B dies.
On the AMD side, the ProcODT and Rtt numbers are key for stable OC performance on pure Dual Rank RAM, as your memory is more AMD-optimized. You could try enabling the XMP profile manually at 2T, then capture a screenshot of the Asrock Timing Config (download it here) and check the VCCSA/IO after enabling XMP (use HWInfo64 for details).
Here’s my personal screenshot if that helps:
Asrock Timing Config (and aida results):
Voltages (VCCSA and VCCIO are shown):
Just let me know when I can assist.
It's definitely a Samsung B die.
https://imgur.com/a/HUIq7Ye