HP Z640 XMP support?

[SparkyTech934]

Hello.  I just bought a used HP Z640 workstation and I wanted to upgrade the RAM in the machine.  Currently the machine has:

• 2 sticks of Samsung M393A1K43BB1-CTD6Y
  • 8GB per DIMM for total of 16GB in the system
  • Registered ECC
  • Rated for 2666MHz

While looking for RAM options online, I started to wonder if the RAM currently installed in the system was even being used to its full potential.  I have the following questions:

• What is the maximum supported frequency of RAM for my HP Z640?
• Does the machine have XMP support?

For reference, the system currently has 2x Intel Xeon E5-2620v3 CPUs installed, and the BIOS is version 2.57 (May 2021).

Thanks in advance for your time!

[DGroves · Accepted solution]

xmp is a non official method to overclock ram, as such it is not supported by HP on servers/workstations where stability is paramount

ram speed is set by the motherboards chipset and cpu installed,  lower end cpu's will have a slower ram speed limit compared to a highend cpu

check the HP z640 quickspecs for supported cpu's/ram module speeds

https://support.hp.com/us-en/product/hp-z640-workstation/6978835/document/c04496994

[SparkyTech934]

Hello,

Thanks for the information, it pretty much confirms what I was thinking before I even posted, just thought I'd check around with others.  I actually found a great deal on Newegg on some Crucial RDIMMs, 8GB DDR4-2133.  They were $26.96, brand new.  Couldn't believe my luck!  It was outside my budget, but I spent the money on 8 sticks.  Worth taking advantage of.  Anyways, thanks again!