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The OWC 128GB (4x32GB) DDR4 3200MHz ECC Registered RDIMM kit is the professional memory upgrade for AMD Ryzen Threadripper PRO workstations, servers, and NAS systems. Running at DDR4-3200 (PC4-25600) with ECC error correction and registered buffering, this kit delivers the reliability, stability, and capacity that mission-critical workloads demand. Backed by OWC's industry-leading Lifetime Advance Replacement Warranty and free tech support.
⚠️ Important: This is ECC Registered (RDIMM) memory designed for workstations and servers. It is NOT compatible with standard desktop computers and cannot be mixed with unbuffered memory.


Four 32GB DDR4-3200 (PC4-25600) ECC Registered DIMMs running at CL22 timings, 2RX4 rank configuration, and 1.2V operating voltage. 288-pin form factor compatible with sWRX8 (Threadripper PRO), SP3, and other server/workstation platforms supporting RDIMM memory. 100% JEDEC compliant and RoHS certified.

OWC memory installs in minutes. Installation instructions are included, and OWC provides instructional videos, phone/chat/email tech support, and a Lifetime Advance Replacement program — meaning if you ever have an issue, OWC ships replacement memory to you before you return the old kit. No downtime, no waiting.

OWC has been in business for 35+ years and still honors warranty replacements from day one. The Lifetime Advance Replacement Program ships you new memory immediately upon a warranty claim — so your workstation stays up and running. Free tech support by phone, chat, or email is included for life.


Pair this 128GB kit with the AMD Ryzen Threadripper PRO 5995WX, 5975WX, 5965WX, or 5955WX and the ASRock WRX80 CREATOR R2.0 for a fully loaded professional workstation. The WRX80 platform supports 8-channel DDR4 — populate all 8 slots with two of these kits for a staggering 256GB of ECC registered DDR4.
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