Overclocking memory leading to CPU instability
Overclocking memory leading to CPU instability
Spoiler:
Processor: AMD Ryzen 5 3600 6-Core Processor
Processor
Processor Manufacturer:
Advanced Micro Devices, Inc.
Processor Version:
AMD Ryzen 5 3600 6-Core Processor
External Clock:
100 MHz
Maximum Clock Supported:
4200 MHz
Current Clock:
3600 MHz
CPU Socket:
Populated
CPU Status:
Enabled
Processor Type:
Central Processor
Processor Voltage:
1.1 V
Processor Upgrade:
Socket AM4
Socket Designation:
AM4
Spoiler:
Motherboard: ASRock B450 Gaming-ITX/ac
Motherboard
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[Computer]
Computer Brand Name:
Unknown on Noname
[Motherboard]
Motherboard Model:
ASRock B450 Gaming-ITX/ac
Motherboard Chipset:
AMD B450 (Low-Power Promontory PROM26.A)
Motherboard Slots:
6xPCI Express x1, 1xPCI Express x4, 1xPCI Express x8, 1xPCI Express x16
PCI Express Version Supported:
v3.0
USB Version Supported:
v3.1
[BIOS]
BIOS Manufacturer:
American Megatrends
BIOS Date:
11/06/2020
BIOS Version:
P4.20
UEFI BIOS:
Capable
Super-IO/LPC Chip:
Winbond/Nuvoton NCT6792D
Ram
Spoiler:
Crucial DDR4 PC3600 16GB kit CL16 Ballistix R
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[General Module Information]
Module Number:
0
Module Size:
8 GBytes
Memory Type:
DDR4 SDRAM
Module Type:
Unbuffered DIMM (UDIMM)
Memory Speed:
1333.3 MHz (DDR4-2666 / PC4-21300)
Module Manufacturer:
Crucial Technology
Module Part Number:
BL8G36C16U4R.M8FE1
Module Revision:
0.0
Module Serial Number:
2797559779
Module Manufacturing Date:
Year: 2020, Week: 22
Module Manufacturing Location:
0
SDRAM Manufacturer:
Micron Tech.
DRAM Steppping:
0.0
Error Check/Correction:
None
[Module Characteristics]
Row Address Bits:
16
Column Address Bits:
10
Module Density:
8192 Mb
Number Of Ranks:
1
Device Width:
8 bits
Bus Width:
64 bits
Die Count:
1
Module Nominal Voltage (VDD):
1.2 V
Minimum SDRAM Cycle Time (tCKAVGmin):
0.75000 ns
Maximum SDRAM Cycle Time (tCKAVGmax):
1.60000 ns
CAS# Latencies Supported:
10, 12, 13, 14, 15, 16, 17, 18, 19, 20
Minimum CAS# Latency Time (tAAmin):
14.250 ns
Minimum RAS# to CAS# Delay (tRCDmin):
14.250 ns
Minimum Row Precharge Time (tRPmin):
14.250 ns
Minimum Active to Precharge Time (tRASmin):
32.000 ns
Supported Module Timing at 1333.3 MHz:
19-19-19-43
Supported Module Timing at 1200.0 MHz:
18-18-18-39
Supported Module Timing at 1066.7 MHz:
16-16-16-35
Supported Module Timing at 933.3 MHz:
14-14-14-30
Supported Module Timing at 800.0 MHz:
12-12-12-26
Supported Module Timing at 666.7 MHz:
10-10-10-22
Minimum Active to Active/Refresh Time (tRCmin):
46.250 ns
Minimum Refresh Recovery Time Delay (tRFC1min):
350.000 ns
Minimum Refresh Recovery Time Delay (tRFC2min):
260.000 ns
Minimum Refresh Recovery Time Delay (tRFC4min):
160.000 ns
Minimum Four Activate Window Delay Time (tFAWmin):
21.000 ns
Minimum Active to Active Delay Time - Different Bank Group (tRRD_Smin):
2.925 ns
Minimum Active to Active Delay Time - Same Bank Group (tRRD_Lmin):
4.900 ns
Minimum CAS to CAS Delay Time - Same Bank Group (tCCD_Lmin):
5.000 ns
[Features]
Module Temperature Sensor (TSOD):
Not Supported
Module Nominal Height:
31 - 32 mm
Module Maximum Thickness (Front):
1 - 2 mm
Module Maximum Thickness (Back):
1 - 2 mm
Address Mapping from Edge Connector to DRAM:
Standard
[Intel Extreme Memory Profile (XMP)]
XMP Revision:
2.0
[Certified Profile [Enabled]]
Module VDD Voltage Level:
1.35 V
Minimum SDRAM Cycle Time (tCKAVGmin):
0.55500 ns
CAS# Latencies Supported:
7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Minimum CAS# Latency Time (tAAmin):
8.750 ns
Minimum RAS# to CAS# Delay (tRCDmin):
9.875 ns
Minimum Row Precharge Time (tRPmin):
9.875 ns
Minimum Active to Precharge Time (tRASmin):
21.000 ns
Supported Module Timing at 1800.0 MHz:
16-18-18-38
Supported Module Timing at 1733.3 MHz:
16-18-18-37
Supported Module Timing at 1666.7 MHz:
15-17-17-35
Supported Module Timing at 1600.0 MHz:
14-16-16-34
Supported Module Timing at 1466.7 MHz:
13-15-15-31
Supported Module Timing at 1333.3 MHz:
12-14-14-28
Supported Module Timing at 1200.0 MHz:
11-12-12-26
Supported Module Timing at 1066.7 MHz:
10-11-11-23
Supported Module Timing at 933.3 MHz:
9-10-10-20
Supported Module Timing at 800.0 MHz:
7-8-8-17
Minimum Active to Active/Refresh Time (tRCmin):
32.000 ns
Minimum Refresh Recovery Time Delay (tRFC1min):
350.000 ns
Minimum Refresh Recovery Time Delay (tRFC2min):
260.000 ns
Minimum Refresh Recovery Time Delay (tRFC4min):
160.000 ns
Minimum Four Activate Window Delay Time (tFAWmin):
21.000 ns
Minimum Active to Active Delay Time - Different Bank Group (tRRD_Smin):
3.000 ns
Minimum Active to Active Delay Time - Same Bank Group (tRRD_Lmin):
4.875 ns
Spoiler:
Current Ram timings
Memory
[General information]
Total Memory Size:
16 GBytes
Total Memory Size [MB]:
16384
[Current Performance Settings]
Maximum Supported Memory Clock:
Unlimited
Current Memory Clock:
1766.6 MHz
Current Timing (tCAS-tRCD-tRP-tRAS):
16-19-19-34
Memory Channels Supported:
2
Memory Channels Active:
2
Command Rate:
1T
Read to Read Delay (tRD_RD) Same Rank:
5T
Read to Read Delay (tRD_RD) Different DIMM:
4T
Write to Write Delay (tWR_WR) Same Rank:
5T
Write to Write Delay (tWR_WR) Different DIMM:
6T
Read to Precharge Delay (tRTP):
14T
Write to Precharge Delay (tWTP):
37T
Write Recovery Time (tWR):
26T
Row Cycle Time (tRC):
56T
Refresh Cycle Time (tRFC):
619T
Four Activate Window (tFAW):
38T
PSU: Corsair TX650
GPU: NVIDIA GeForce RTX 2060
Having bought 3600 MHz ram I wanted to get them to run at that speed instead of the default 2600 MHz. After a lot of troubleshooting back and forth I have settled on 3533 MHz, by activating the XMP profile for 3600 MHz in the bios and then adjusting frequency back one step to 1766 MHz. I also improved primary timings using Dram calculator, but so far I have left secondary timings at the 3600 MHz XMP default.
This stuff all took a while to even get the computer to post!
I ran MemTest and it didn't give me any errors, so I thought it was happy days from there.....
But now the computer restarts when under heavy CPU-load. This makes no sense to me as I haven't touched anything CPU related. I tried to run prime95 and it will cause the computer to restart within 5-7 minutes(
HWinfo log
of this if anyone is interested). If I go back to 2600 MHz everything runs fine.
Looking at event viewer there is a critical event id 41 "kernel power" event but it seems like a generic critical error that won't tell me what's wrong.
So basically I don't know how to fix this.
Should I increase voltage to the CPU? Or is my PSU not capable enough?
Am I missing some obvious tweak that will fix everything?
The standard setting for that XMP profile is 1.35v, but you might want to try a higher value. 1.36, 1.37...
Have you experimented with increased voltage for RAM? I believe the PSU isn't the issue, as RAMs consume minimal power. Additionally, the RAM controller is physically located within the CPU, which means you're directly interacting with it.
The standard setting for that XMP profile is 1.35v, but you might want to try a higher value. 1.36, 1.37...