F5F Stay Refreshed Hardware Desktop Unusual performance with four DDR4 memory modules on a B660 processor running 12th generation CPU

Unusual performance with four DDR4 memory modules on a B660 processor running 12th generation CPU

Unusual performance with four DDR4 memory modules on a B660 processor running 12th generation CPU

J
J4im3x0
Member
164
04-22-2022, 05:58 PM
#1
Hello, I'm currently assembling a new PC and have run into a curious issue during testing. The components are: Intel i3-12100F, Gigabyte B660 DS3H DDR4, Endorify Spartan 5 Max CPU cooler, four 8GB DDR4 modules (two sets of two), Patriot Viper Steel DDR4-3600 CL17-19-19-39, SanDisk SN570 1TB, ASROCK ARC A380 6GB, NZXT H510 white, two 120mm PWM exhaust fans, and a Pure Power 11 500W 80+ gold power supply. On first startup I didn't see any graphics output. After some troubleshooting, I managed to boot with just two of the four DIMMs. I learned that for dual-channel setups with more than two modules, it's best to place the first kit in the main slots and the second in the secondary ones, then alternate channels. This method usually works smoothly for me since I started using it back in the Athlon XP era. So far, this approach has consistently succeeded. Now, regarding the current situation, I tried different arrangements: swapping kits between main and secondary slots, changing channel assignments within each kit, even replacing the older kit with a newer one in the main slots. Still, no visual confirmation. At one point, I had the newer kit in the main slots (CPU slots 2 and 4) and the older one in the first and third slots by serial number. This happened unintentionally. As a final attempt, I sold the existing RAM and installed a 2x16GB kit, swapping the DIMMs so the older one occupied Channel A and the newer one Channel B. To my delight, I captured an image and successfully enabled XMP settings. The system ran flawlessly, with no errors detected in Memtest for over 48 hours. I tested all other combinations with one kit per channel and different DIMMs in various slots, but only this specific pairing worked. How is that possible? Are there just a few tolerances that make this combination work slightly better? Thanks ahead for your help.
J
J4im3x0
04-22-2022, 05:58 PM #1

Hello, I'm currently assembling a new PC and have run into a curious issue during testing. The components are: Intel i3-12100F, Gigabyte B660 DS3H DDR4, Endorify Spartan 5 Max CPU cooler, four 8GB DDR4 modules (two sets of two), Patriot Viper Steel DDR4-3600 CL17-19-19-39, SanDisk SN570 1TB, ASROCK ARC A380 6GB, NZXT H510 white, two 120mm PWM exhaust fans, and a Pure Power 11 500W 80+ gold power supply. On first startup I didn't see any graphics output. After some troubleshooting, I managed to boot with just two of the four DIMMs. I learned that for dual-channel setups with more than two modules, it's best to place the first kit in the main slots and the second in the secondary ones, then alternate channels. This method usually works smoothly for me since I started using it back in the Athlon XP era. So far, this approach has consistently succeeded. Now, regarding the current situation, I tried different arrangements: swapping kits between main and secondary slots, changing channel assignments within each kit, even replacing the older kit with a newer one in the main slots. Still, no visual confirmation. At one point, I had the newer kit in the main slots (CPU slots 2 and 4) and the older one in the first and third slots by serial number. This happened unintentionally. As a final attempt, I sold the existing RAM and installed a 2x16GB kit, swapping the DIMMs so the older one occupied Channel A and the newer one Channel B. To my delight, I captured an image and successfully enabled XMP settings. The system ran flawlessly, with no errors detected in Memtest for over 48 hours. I tested all other combinations with one kit per channel and different DIMMs in various slots, but only this specific pairing worked. How is that possible? Are there just a few tolerances that make this combination work slightly better? Thanks ahead for your help.