HP Z4 G4 EWAS baby ram issues
HP Z4 G4 EWAS baby ram issues
Hi all, im lucky enough to have a job that allows me to go to many different buildings all over the city i live in that also means I spend a lot of time in loading docks as a tech and get to do a lot of ewast dumpster diving which has lead to me getting a lot of free components for PC's. I have recently scored 3 hp-z4-g4's all only having 32gb (16gbx2) of ddr4 ecc pc4-2933y. But as of today in a different discarded server pc I found 8 sticks of 64gb ddr4 ecc pc4-2933y but they are also slightly different speed of ram. The 16gb sticks are samsung pc4-23400 and the 64gb sticks are sk hynix pc4-23466-r, I have tested the new sticks in the pcs with it throw out a ram error code at me as they seem to not agree with the new ram. Now I some what understand the the 23466-r is a faster speed but I do not understand why it won't work with the system I did only use the 2 sticks out of the 4 stick set so im not sure if that would be the problem or if its just incompatible with the chip set on the mobo cpu combo that these HP's have. Im hoping someone can help shed some light on the problem as im new to the home lab seen and server gear is a bit out of my realm of knowledge. Thank you to anyone who takes the time to read and or respond.
That matches what you think about the -R notation on the storage speed label. After reviewing the details once I received them, it looks like they’re from eWast, which is great—no need to spend a lot. If I ever need another server with registered dims, this should be useful.
They are xeons but it appears they don’t respond well to the registered dimms. It might be because they came from a 4-stick setup and I need to use all four, or maybe the system simply doesn’t like them. The processor is an Intel Xeon W-2235 at 3.80GHz.
For those still working on the issue at home or seeking a solution, I’ve discovered the answer. I got lucky when I borrowed an HP spec sheet for the Z4G4 that wasn’t listed on their site—it revealed the CPU is a W-2135, which can’t handle more than 32GB RAM (see note on the attached photo). After confirming in the BIOS today, I realized it actually has a W-2235 instead, supporting 64GB RAM sticks. So the fix would be to replace the CPU with the correct one, enabling higher RAM usage. I gained a lot of knowledge about RAM while troubleshooting this, and I’m sure it helped me find the right solution. Thanks to everyone who offered advice—it really motivated me to try again.