wim-bart Posted January 13, 2021 Share Posted January 13, 2021 (edited) I have two sets of memory, one stable at 3600CL18 and one not stable at 3600CL18. After inspection I found out that stable set is: ------------------------------------------------------------- MEMORY MODULE ------------------------------------------------------------- Manufacturer : Corsair Series : Vengeance RGB PRO Part Number : CMW16GX4M2Z3600C18 Serial Number : Undefined JEDEC DIMM Label : 8GB 1Rx8 PC4-2666U-UA0-10 Architecture : DDR4 SDRAM UDIMM Speed Grade : DDR4-2666U Capacity : 8 GB (8 components) Organization : 1024M x64 (1 rank) Register Manufacturer : N/A Register Model : N/A Manufacturing Date : Undefined Manufacturing Location : Taiwan Revision / Raw Card : 0000h / A0 (8 layers) ------------------------------------------------------------- DRAM COMPONENTS ------------------------------------------------------------- Manufacturer : Micron Technology Part Number : MT40A1G8SA-075E:E Package : Standard Monolithic 78-ball FBGA Die Density / Count : 8 Gb E-die (Z11B / 19 nm) / 1 die Composition : 1024Mb x8 (64Mb x8 x 16 banks) Input Clock Frequency : 1333 MHz (0,750 ns) Minimum Timing Delays : 18-18-18-43-61 Read Latencies Supported : 24T, 23T, 22T, 21T, 20T, 19T, 18T... Supply Voltage : 1,20 V XMP Certified : 1799 MHz / 18-22-22-42-64 / 1,35 V XMP Extreme : Not programmed SPD Revision : 1.0 / January 2014 XMP Revision : 2.0 / December 2013 And unstable set is: ------------------------------------------------------------- MEMORY MODULE ------------------------------------------------------------- Manufacturer : Corsair Series : Vengeance RGB PRO Part Number : CMW16GX4M2Z3600C18 Serial Number : Undefined JEDEC DIMM Label : 8GB 1Rx8 PC4-2666U-UA0-10 Architecture : DDR4 SDRAM UDIMM Speed Grade : DDR4-2666U Capacity : 8 GB (8 components) Organization : 1024M x64 (1 rank) Register Manufacturer : N/A Register Model : N/A Manufacturing Date : Undefined Manufacturing Location : Taiwan Revision / Raw Card : 0000h / A0 (8 layers) ------------------------------------------------------------- DRAM COMPONENTS ------------------------------------------------------------- Manufacturer : Nanya Technology Part Number : NT5AD1024M8A3-HP Package : Standard Monolithic 78-ball FBGA Die Density / Count : 8 Gb A-die (20 nm) / 1 die Composition : 1024Mb x8 (64Mb x8 x 16 banks) Input Clock Frequency : 1333 MHz (0,750 ns) Minimum Timing Delays : 18-18-18-43-61 Read Latencies Supported : 24T, 23T, 22T, 21T, 20T, 19T, 18T... Supply Voltage : 1,20 V XMP Certified : 1799 MHz / 18-22-22-42-64 / 1,35 V XMP Extreme : Not programmed SPD Revision : 1.0 / January 2014 XMP Revision : 2.0 / December 2013 The Micron set runs at 3600CL18 and with tweaking at 3600@16 the Nanya set cannot be get stable abouve 2666@CL18 making my system unusable with it. The problem is, I ordered SKU: CMW16GX4M2Z3600C18 EAN: 0840006615682 to avoid mismatch of parts and have equal parts delivered. The Nanya is not getting stable at all. And I wonder if this set is certified/verified with X570 at all, the Micron works great in contrast. How to get 2 equal sets without making a lot of costs for my supplier. And selling the modules and order a 32GB set is not a solution because that makes extra costs. Another issue, the Nanya runs at 46 degrees celcius where the Micron runs at 32 degrees celcius. Edited January 13, 2021 by wim-bart Link to comment Share on other sites More sharing options...
wim-bart Posted January 16, 2021 Author Share Posted January 16, 2021 A new information. There are multiple versions. The Micron is version 3.31 and tested to be compatible with numero's of boards and tested to be stable with Asus, ASRock, MSI, Gigabyte and X570/B550 and Ryzen 3000 series. The non Micron versions (I have a v8.31) is not stable with mentioned combinations, and also not tested and not on the QVL. So stay away from the versions other then V3.31. The version number is shown on the set. Link to comment Share on other sites More sharing options...
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