Overraming DS1621+

[Enquiries]

having read your article https://nascompares.com/2021/03/25/synology-ds1621-nas-32gb-64gb-unofficial-memory-upgrade-guide/
i want to upgrade the RAM of our DS1621+ unofficially.
Currently we are running original Synology RAM 1 x 16GB + 1 x 4 GB.
As described in your article our RAM is often at 80% .
So, our question: Can we / have you tested /do you think it works:
1) Keep the original 16GB Synology RAM
2) Replace the original 4GB Synology RAM with 32 GB Kingston or vcloud or PHS or maxano RAM
That would provide 16GB+32GB=48GB RAM

Potentially as more VMs / containers add, the 16GB Synology RAM woud be replaced later as well if it works.
Which brand would be the best for overraming in conjunction with original RAM?

Also having heard that storage prices will drop again this year, we would like to enhance the 2 M.2 Synology SNV3400-400G by more. Would you think Samsung 2TB - 4TB 990 PRO Heatsink NVMe™ M.2 SSD will work?

[ed]

For your RAM upgrade on the DS1621+:

1. **RAM Compatibility:** You can explore mixing RAM brands, but it's recommended to match frequencies and ideally stick to the same brand for stability. Here's a list of tested RAM that works with Synology NAS units: [Synology NAS Compatible RAM](https://nascompares.com/answer/synology-...tible-ram/).

2. **SSD Upgrade:** The Samsung 990 PRO NVMe M.2 SSD is a good choice. If you're considering alternatives based on endurance (DWPD score), here are some other options: [Best NVMe M.2 SSDs for Caching](https://nascompares.com/answer/best-nvme...r-caching/).

3. **Heatsink Consideration:** Note that the heatsink on the Samsung 990 PRO may have space considerations. We recommend measuring the available gap for heatsink clearance to ensure proper fitment.