Need Compatible RAM Options for OMEN 40L – HyperX DDR4-3733 Unavailable

[salv87]

Hi everyone,

I’m reaching out because I’m having a hard time finding compatible RAM for my OMEN desktop and I really need your advice to avoid buying something that won’t work.

My current configuration:

• Product: OMEN 40L GT21-0006nl Desktop
• OS: Windows 11 Home
• CPU: Intel® Core™ i9-12900K
• GPU: NVIDIA® GeForce RTX™ 3070 Ti
• Memory installed: HyperX DDR4-3733 MHz XMP Heatsink 16 GB (2 x 8 GB)

From the manual:

• Supports up to 64 GB DDR4 memory
• 4 DIMM slots
• 288-pin UDIMM
• DDR4-3733 Intel® Extreme Memory Profile (XMP)
• JEDEC specification required
• Non-ECC memory

Problem:

The HyperX DDR4-3733 RAM is almost impossible to find.

My goal:

I would like to:

• Either buy 4 new 16 GB modules (to reach 64 GB), or
• If not possible, buy 2 new 8 GB modules that are compatible with the ones already installed (to reach 32 GB total).

Questions:

• Which RAM models currently available are 100% compatible with my system?
• If I buy 4 new modules, can I use a different brand as long as they meet the specs, or is HyperX mandatory?
• If I buy only 2 additional 8 GB modules, what would you recommend to ensure full compatibility and stability with the existing RAM?

Any advice or links to tested compatible RAM would be greatly appreciated. I really don’t want to make the wrong purchase.

Thanks a lot in advance for your help!

[NonSequitur777]

@salv87,

Welcome to our HP Community forum!

Please note: your HP OMEN 40L Gaming Desktop is pretty finnicky when it comes to RAM and especially to get RAM to run at 3733 MHz.

However, this OMEN by HP 40L Gaming Desktop GT21-0xxx User was able to get 8GB Kingston Fury KF3733C19D4/8GX RAM sticks to run at 3733 MHz alongside HP-branded Kingston RAM sticks: https://www.userbenchmark.com/UserRun/54838968.

I would imagine that 16GB KF437C19BB1/16 Kingston RAM sticks specced at 3733 MHz should be able to run at 3733 MHz.  You could try 2x32GB Kingston Fury KF437C19BB1K2_32-B.ai as well.

AVOID Corsair Vengeance and G.SKILL RAM as they are most likely to stay stuck at their SPD (default) RAM speed.

Kind Regards,

NonSequitur777

[salv87]

Hi NonSequitur777,

Thank you so much for your detailed reply – I really appreciate it. I honestly felt a bit lost with this issue, and it’s a relief to finally talk to someone who knows much more about it than I do.

Unfortunately, the models you mentioned (the Kingston Fury 3733 MHz) are also very hard to find where I live.

To be honest, I don’t have much experience with RAM compatibility. So far, I’ve tried ordering other models on Amazon, but I ended up returning them because they were not compatible with my system.

At this point, I’d also be open to going down to 3200 MHz if necessary. But I still don’t understand exactly which parameters I should look for to be sure the RAM will work (timing, voltage, JEDEC specs, etc.) and what I absolutely need to avoid.

Maybe this one:
https://www.kingston.com/datasheets/KF436C17BBK2_16.pdf

or

https://www.kingston.com/datasheets/KF436C18BBK2_32.pdf

Any advice you can share to help me understand what to look for (or any specific models you know are safe) would be incredibly helpful.

Thanks again for your time and support!

[NonSequitur777]

@salv87,

Yes, the Kingston Fury RAM references may work, and if you can order these and if it is not too much trouble to return it if somehow they get stuck at their default 2400 MHz speed, I would try it out.

If you are able to lock in either RAM at the 3600 MHz XMP profile, I would suggest you keep it.

[EDIT:] As I mentioned in my previous response, HP figured out a way to make it challenging for alternative (non-HP branded) RAM that will run at 3733 MHz.  The HP-branded RAM sticks are clocked with a slower CAS Latency: they are timed at CL22 whereas most RAM sticks are between CL16 to CL19 nowadays.

Because of the timing mismatch your CPU may be having issues managing mixed or faster CL RAM.

Anyway, you should be able to access "DRAM Frequency" in the Advanced Menu tab in BIOS.

This should allow you to enable/set the XMP profile: https://support.hp.com/us-en/document/ish_9767626-9767684-16.

Kind Regards,

NonSequitur777

[salv87]

Hi NonSequitur777,

Thank you so much for all the detailed explanations and for taking the time to help me understand this better.

I really appreciate your support and all the clear information you shared. I’ll look into these options and see what I can do.

Thanks again for everything.

Best regards,
Salvatore

[NonSequitur777]

@salv87,

You are very welcome -please follow up if you don't mind sharing how things went!

I am positive that any feedback will help somebody else down the line.

Kind Regards,

NonSequitur777