DDR3 Server Memory
Tested DDR3 ECC RDIMMs and LRDIMMs — 8GB to 32GB, PC3-10600R through PC3-14900R — for Dell 11th/12th-generation PowerEdge, HPE G7/Gen8, and the Xeon E5 v1/v2 workstation era. Load-tested before shipping, 90-day returns.
DDR3 Server Memory — ECC RDIMMs for Legacy Platforms
Keep proven hardware in service for very little money. PC Server & Parts stocks 8GB, 16GB, and 32GB DDR3 ECC registered modules (PC3-10600R through PC3-14900R, plus PC3L low-voltage and LRDIMM variants) from Samsung, SK Hynix, and Micron — pulled from working servers, load-tested, and priced at a fraction of what this memory cost new. For machines that are long out of production, refurbished is often the only sensible way to buy DDR3.
Which Platforms Take DDR3
- Xeon 5500/5600 (Dell 11th-gen R610/R710, HPE G6/G7): DDR3-1066 and DDR3-1333.
- Xeon E5-2600 v1 / v2 (Dell 12th-gen R620/R720, HPE Gen8): DDR3-1600 and DDR3-1866.
- Workstations: HP Z420/Z620/Z820 and Dell Precision T3600–T7610 run the same E5-era DDR3 — registered or unbuffered ECC depending on model.
- PC3L (1.35 V): low-voltage modules run in most standard sockets, but standard 1.5 V sticks do not always work where the OEM shipped low-voltage — match what your platform specifies.
Not sure which speed your board wants? Check the CPU generation or motherboard spec — or send us the server model and we will match modules for you.
Why Buy DDR3 Memory from PCSP
- Load-tested: every module is exercised in a same-generation server — ECC function, full capacity, and rated speed verified.
- Platform-matched: we confirm fit against your exact machine before it ships.
- 90-day returns: DOA or non-conforming parts come back on us.
- Fast shipping: in-stock modules ship the same business day when ordered before 1:00 pm EST.
Upgrading past the DDR3 era? DDR4 server memory is today's best price-per-gigabyte, and DDR5 RDIMMs cover current platforms. The full selection lives in Server RAM & Memory.
Quick Answers: DDR3 Server Memory
Which servers still use DDR3?
Anything on Xeon 5500/5600 or Xeon E5-2600 v1/v2 — Dell PowerEdge 11th and 12th generation (R610, R710, R620, R720), HPE ProLiant G6 through Gen8, and the matching workstation era (HP Z420–Z820, Dell Precision T3600–T7610). DDR3 DIMMs are keyed differently from DDR4, so the wrong generation will not physically seat.
What does the R, E, or L in PC3-12800R mean?
R is registered (RDIMM) — the standard for dual-socket servers. E is unbuffered ECC for entry servers and workstations. L after the number (12800L) marks a load-reduced LRDIMM for maximum-capacity builds, while PC3L before the number means low-voltage 1.35 V. Registered and unbuffered types cannot be mixed in one system — match what is already installed.
Is used DDR3 memory reliable at this age?
Yes — memory has no moving parts and rarely wears out. Every module here passes a full test cycle in real same-generation hardware before listing, so ECC function, capacity, and speed are verified working, and our 90-day return policy covers anything non-conforming at our expense.
Can I mix speeds or capacities in one server?
Mixed speeds run at the slowest module's rate, and mixed capacities break optimal interleaving on dual-socket boards — workable, but uniform kits are safer. Tell us what is installed and the target total, and we will spec matching modules.