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Hp z4 g4 ewast baby ram problems

Ldboom
By Ldboom
in Troubleshooting
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Go to solution Solved by Needfuldoer,
13 minutes ago, AbydosOne said:

Most likely the workstation RAM is ECC UDIMM and the server RAM is ECC RDIMM.

 

UDIMM = Unbuffered

RDIMM =  Registered (buffered)

 

They not compatible or interchangeable.

You can't mix the two types, however if that workstation has a Xeon W processor then it should be able to use either one.

Posted

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.

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14 minutes ago, Ldboom said:

Im hoping someone can help shed some light on the problem

Most likely the workstation RAM is ECC UDIMM and the server RAM is ECC RDIMM.

 

UDIMM = Unbuffered

RDIMM =  Registered (buffered)

 

They not compatible or interchangeable.

 

EDIT:

14 minutes ago, Ldboom said:

I found 8 sticks of 64gb ddr4 ecc pc4-2933y

Those things are like $150 each...

Main System (Byarlant): Ryzen 7 5800X | Asus B550-Creator ProArt | EK 240mm Basic AIO | 32GB G.Skill DDR4 3600MT/s CL16 | XFX Speedster SWFT 210 RX 6600 | Samsung 990 PRO 2TB / Samsung 960 PRO 512GB / 4× Crucial MX500 2TB (RAID-0) | Corsair RM750X | Silicom (Intel) X540-AT2 10G NIC | Inateck USB 3.0 Card | Hyte Y60 Case | Dell U3415W Monitor | Keychron K4 Brown (white backlight)

 

Laptop (Narrative): Lenovo Flex 5 81X20005US | Ryzen 5 4500U | 16GB DDR4 3200MT/s (soldered) | Vega II 384SP Graphics | SKHynix P31 1TB NVMe SSD | Intel AX200 Wifi | Asus 2.5G USB NIC | Asus ProArt PA278QV | Keychron K12 Blue (RGB backlight)

 

Proxmox Server (Veda): Ryzen 7 3800XT | ASRock Rack X470D4U | Corsair H80i v2 | 64GB Micron DDR4 ECC 3200MT/s | 4× WD 10TB / 4× Seagate 14TB Exos / 8× WD 12TB (custom external SAS enclosure) / 2× Samsung PM963a 960GB SSD | Seasonic Prime Fanless 500W | Intel X550-T2 10G NIC | LSI 9300-8i HBA | Adaptec 82885T SAS Expander | Fractal Design Node 804 Case

 

Proxmox Server (La Vie en Rose): GMKtec Mini PC | Ryzen 7 5700U | 32GB Lexar DDR4 (SODIMM) | Vega II 512SP Graphics | Lexar 1TB 610 Pro SSD | 2× Realtek 8125 2.5G NICs


Media Center/Video Capture (Jesta Cannon): Ryzen 5 1600X | ASRock B450M Pro4 R2.0 | Noctua NH-L12S | 16GB Crucial DDR4 3200MT/s | EVGA GTX750Ti SC | UMIS NVMe SSD 256GB / TEAMGROUP MS30 1TB | Corsair CX450M | Viewcast Osprey 260e Video Capture | TrendNet (Aquantia AQC107) 10G NIC | LG UH12NS30 BD-ROM | Silverstone Sugo SG-11 Case | Sony XR65A80K

 

Workbench (Doven Wolf): Lenovo m715q | Ryzen Pro 3 2200GE | 16GB Crucial DDR4 3200MT/s (SODIMM) | Vega 8 Graphics | SKHynix (OEM) 256GB NVMe SSD | uni 2.5G USB NIC | HDMI add-in module

 

Network:

Spoiler 
                       ┌─────────────── Office/Rack ───────────────────────────────────────────────────────┐
Google Fiber Webpass ── Cloud Gateway Max ═╦════ Flex 2.5-8 ═╦════ Flex XG ═╦═ Veda
                           La Vie en Rose ═╣ La Vie en Rose ═╬═ Doven Wolf  ╠═ Veda-NAS
                                     Veda ─╜      Narrative ═╝              ╟─ Switch 8-60W ─┬─ Veda
╔═══════════════════════════════════════════════════════════════════════════╝                └─ Veda (IPMI)
║    ┌ Closet ┐     ┌───────── Bedroom ─────────┐
╚════ Flex XG ═╦╤═══ Flex XG ═╤╦═ Byarlant
        (PoE)  ║│             │╠═ Narrative 
Kitchen Jack ══╣└─ Dual PoE ┐ │╚═ Jesta Cannon*
   (Testing)   ║┌─ Injector ┘ └── Work Laptop
     Bedroom ══╝│
        Jack #2 │        ┌──────── Media Center ───────────────────────────┐
                └──────── Switch 8 ────────────┬─ nanoHD Access Point (PoE)
Notes:                                         ├─ Sony PlayStation 4 
─── is Gigabit / ═══ is Multi-Gigabit          ├─ Pioneer VSX-S520
* = cable passed from Bedroom to Media Center  └─ Sony XR65A80K (Google TV)

 

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13 minutes ago, AbydosOne said:

Most likely the workstation RAM is ECC UDIMM and the server RAM is ECC RDIMM.

 

UDIMM = Unbuffered

RDIMM =  Registered (buffered)

 

They not compatible or interchangeable.

You can't mix the two types, however if that workstation has a Xeon W processor then it should be able to use either one.

I sold my soul for ProSupport.

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10 minutes ago, AbydosOne said:

Most likely the workstation RAM is ECC UDIMM and the server RAM is ECC RDIMM.

 

UDIMM = Unbuffered

RDIMM =  Registered (buffered)

 

They not compatible or interchangeable.

 

EDIT:

Those things are like $150 each...

Ok that makes sense, Im guessing thats what the -R stands for on the end of the 64gb stick speed. unfortunately i checked the specs on them after I got them, but luckily they are from ewast so didn't brake the bank getting them and may come in handy down the line if I ever find another server that takes registered dimms.

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7 minutes ago, Needfuldoer said:

You can't mix the two types, however if that workstation has a Xeon W processor then it should be able to use either one.

They are xeons however they still seem to not like the registered dimms (only had the 2 64gb registered in the pc at the time ) again not sure if its because they are from a 4 stick set and I need to use all 4 to make it happy or because the pc just dosnt like them. The cpu is a Intel Xeon W-2235 3.80GHz.

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Screenshot_20250624_124307_Chrome.thumb.jpg.fc0bf66e527a646a5dddfb6254b8519c.jpgFor anyone still playing along at home or looking for the answer to this or a similar problem I have found the answer. I was lucky enough to suble upon a hp spec sheet for the z4g4 thats not on there website that had all the answers, it turns out that the problem is the cpu being a w-2135 it will not support dimms higher then 32gb (see note 2 on attached photo). After double checking the in bios today found out that it dose infact have that cpu and not a w-2235 which would support the 64gb ram sticks. So i guess the solution would be to get the correct cpu in this particular case that would then allow the use of the higher capacity of ram. I definitely learnt a lot about ram today in trying to trouble shoot this problem and will most likely promptly forget 90% of it.  Thank you to anyone who responded it definitely drove me to find the fix. 

 

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