Hi folks. So I bought wrong model (AN515-43-R5W3) and have increased RAM from 2x 4GB Samsung to 2x 8GB Crucial. This is me now:
| Northbridge | AMD Ryzen SOC rev. 00 |
| Southbridge | AMD Carrizo FCH rev. 51 |
| Bus Specification | PCI-Express 3.0 (8.0 GT/s) |
| Graphic Interface | PCI-Express 3.0 |
| PCI-E Link Width | x16 (max 16x) |
| PCI-E Link Speed | 8.0 GT/s (max 8.0 GT/s) |
| Memory Type | DDR4 |
| Memory Size | 16 GBytes |
| Channels | Dual |
| Memory Frequency | 1200.0 MHz () |
| CAS# latency (CL) | 18.0 |
| RAS# to CAS# delay (tRCD) | 18 |
| RAS# Precharge (tRP) | 18 |
| Cycle Time (tRAS) | 39 |
| Bank Cycle Time (tRC) | 57 |
| Command Rate (CR) | 1T |
| Uncore Frequency | 1197.6 MHz |
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| Memory SPD | |
| DIMM # | 1 |
| SMBus address | 0x50 |
| Memory type | DDR4 |
| Module format | SO-DIMM |
| Module Manufacturer(ID) | Crucial Technology (7F7F7F7F7F9B00000000000000) |
| SDRAM Manufacturer (ID) | Micron Technology (2C000000000000000000000000) |
| Size | 8192 MBytes |
| Max bandwidth | DDR4-2667 (1333 MHz) |
| Part number | BL8G32C16S4B.M8FE |
| Serial number | E3ABD89A |
| Manufacturing date | Week 02/Year 21 |
| Nominal Voltage | 1.20 Volts |
| EPP | no |
| XMP | yes |
| XMP revision | 2.0 |
| AMP | no |
| JEDEC timings table | CL-tRCD-tRP-tRAS-tRC @ frequency |
| JEDEC #1 | 10.0-10-10-23-33 @ 701 MHz |
| JEDEC #2 | 11.0-12-12-25-36 @ 771 MHz |
| JEDEC #3 | 12.0-12-12-27-39 @ 842 MHz |
| JEDEC #4 | 13.0-13-13-30-43 @ 912 MHz |
| JEDEC #5 | 14.0-14-14-32-46 @ 982 MHz |
| JEDEC #6 | 15.0-15-15-34-49 @ 1052 MHz |
| JEDEC #7 | 16.0-16-16-36-52 @ 1122 MHz |
| JEDEC #8 | 17.0-17-17-39-56 @ 1192 MHz |
| JEDEC #9 | 18.0-18-18-41-59 @ 1263 MHz |
| JEDEC #10 | 19.0-19-19-43-62 @ 1333 MHz |
| JEDEC #11 | 20.0-19-19-43-62 @ 1333 MHz |
| JEDEC #12 | 21.0-19-19-43-62 @ 1333 MHz |
| JEDEC #13 | 22.0-19-19-43-62 @ 1333 MHz |
| JEDEC #14 | 23.0-19-19-43-62 @ 1333 MHz |
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The timings are currently somewhere between JEDEC #8 and #9 resulting in the 2400Mhz result? Would just need a small tweak upwards to get to 2666. From what I have read, I cannot change timings in BIOS as this is not an option. How has my system 'chosen' these timings? Is that set in stone? Did my old modules achieve 2666 because their JEDEC ratings were just a wee bit lower? Basically can anything be done, or have I compounded my original error by buying wrong RAM as well? Apologies for using the wrong terminology.....
