You could have stability issues using 4 sticks with the newer Intel ME firmware introduced in BIOS versions 1401 and 1602. I have a 4x8GB kit of Corsair Vengeance LPX DDR4-4000 that worked flawlessly for months, up until the ME version was updated, and now my system is a horrible mess with all 4 sticks installed. Still works flawlessly with only two installed, but all hell breaks loose with 4 sticks installed.

Flashing the older BIOS 1101 with ME 11.8.50.3425 and previous BIOS versions does not downgrade the ME firmware. Using ASUS BIOS Flashback does not downgrade the ME firmware. So, be prepared to discover the possibility of your system not working right. You may end up sending the memory back for a refund. Don't blame the RAM though. I have an active support ticket with ASUS trying to get them to correct the problem. I cannot get the Intel ME tool to work as the ME region seems to be locked, so I need their help downgrading the ME.

Moises2018 wrote:
Hello,

I currently have 16 GB (2 X 8GB) of DDR4 3200 memory. I want to upgrade the system memory to 32GB. However, an ASUS tech mentioned to me that I would most likely have stability/performance problems if I upgraded my system memory. He mentioned that I should have purchased a 32GB kit to begin with.
I have the G.Skill TridentZ RGB Series 16GB (2 X 8GB) Kit. Model: F4-3200C14D-16GTZR.

I want to purchase the same exact kit, same model in order to have 32GB of system memory; but is it true that I will have possible stability/performance issues if I add another 16GB memory kit?

Is there problems with adding two 16GB memory kits (same model) instead of a 32GB kit?

Can someone please shed some light on the matter?

Thank you!

It is not recommended to mix ram modules...even same models...not saying you can't....may have to play with alot of the timings to get them to work .....you do however risk the chance of stability when doing so.

If the SPD is not identical you could have stability issuses. If the modules are identical (hardware) in every respect you can use Thaiphoon Burner to transfer the firmware. Doing this could void the warranty on the memory. It would be best to sell your 2 sticks kit and buy the 4-stick kit. Some of the 4-stick kits have the SPD configured for 1 DIMM per channel and they are intended for quad-channel systems, not dual-channel with 2 DIMM per channel.

I would never say you could safely do this and you have to understand that if you purchase a second kit it is all on you
But if your kit is the 3200 14-14-14-34 kit I would say you have a good chance of them working together, I say this because I have owned several of the 4x8GB kits of that speed and have used 2 3600 15-15-15 kits together without issue.
You would be better to sell the 2x8 kit and purchase the 4x8 kit of the same speed and timings, or purchase from a store with a return policy in case it is not successful