Built the new system now, Z690 TOMAHAWK WIFI DDR4 + i5-13500 (still posting from the old system, the new one's still being stability-tested).
1) Dual-rank B-Die 2x 16GB works at DDR4-3600 CL14-15-15 CR2T Gear1 even with the locked VCCSA of only ~0.95V, just like with your RAM kit. The main thing for me was a VDDQ voltage of 1.3V, which gets set automatically with a DRAM voltage of 1.42V (my RAM kit has an XMP with 1.45V). I tried with DRAM voltage of 1.40V, which makes the BIOS set VDDQ 1.2V, but i got errors in Memtest86 like that. With 1.42V/1.3V i get four passes and no problems in Windows either. CR1T was not possible, would not pass memory training. This is not uncommon on this platform. But Gear1 is far more important anyway.
2) Windows 11
22H2 enables "Virtualization-based Security" (VBS) with "Hypervisor-Protected Code Integrity“ (HVCI) by default, if the BIOS is set accordingly.
It slows down the CPU somewhat and protects against mostly theoretical attacks, so i turned it off like so: https://www.techrepublic.com/wp-content/uploads/2021/10/d-disable-vbs-increase-win11-performance.jpg
3) I set the following in the BIOS: https://forum-en.msi.com/index.php?threads/z790-carbon-x-13900k.380651/#post-2157777
When setting "Package C-State Limit" to C10, it will enter C7 state in idle, instead of only C6. The C7 state lowers power consumption in idle by around 6W (37W -> 31W).
I also set Native PCIe Enable and Native ASPM to Enabled in the BIOS, and set Link State Power Management to Maximum, https://www.intel.com/content/www/us/en/support/articles/000092564/graphics.html
4) Cinebench R23 results are around ~20940 for me when HWinfo64 is not running, and 20600 when HWinfo64 is running. It makes a difference.
I use the "washer mod
" for the LGA 1700 socket, with four metal washers of ~0.85 mm height. It's said to reduce temperatures and prevent the CPU from bending in the middle, where the pressure of the retention mechanism is applied to the rectangular IHS. I am also undervolting using CPU Lite Load
. Despite there being no option "IA CEP Support"
available in the latest BIOS, i can undervolt the CPU without losing performance, so IA CEP doesn't intervene.
CPU Lite Load Mode 12 (default) - CB23 score: 20962 - total system power draw: 182W, CPU only: 135W (HWinfo64 CPU package power).
CPU Lite Load Mode 1 (crashes in Prime95 Small FFTs!) - CB23 score: 20935 - total system power draw: 141 W, CPU only: 105W.
CPU Lite Load Mode 4 (stable so far) - CB23 score: 20955 - total system power draw: 149 W, CPU only: 114W.
The CB scores are all within the margin of error, basically identical. They only drop by ~300 points when i also monitor the sensors with HWinfo64 in the background.