RAM / Memory
Server-grade ECC memory — DDR3, DDR4, and DDR5 RDIMMs and LRDIMMs, speed- and rank-matched to your platform. Filter by capacity, speed, and brand, or send us your server model and we'll match the right modules for you.
Server RAM & Memory — DDR3, DDR4, DDR5 ECC
Upgrade or repair with server-grade memory that has been tested in same-generation hardware before it ships. PC Server & Parts stocks ECC RDIMMs and LRDIMMs across DDR3, DDR4, and DDR5 for Dell PowerEdge, HPE ProLiant, and Lenovo servers, plus workstation memory for Dell Precision, HP Z, and ThinkStation systems. Filter the listing by capacity, speed, and brand — or tell us your server model and we will match the right modules for you.
Need RAM for PC desktops rather than servers? We stock computer RAM too — unbuffered DDR3, DDR4 and DDR5 RAM sticks, tested the same way and priced well below new-module prices. Whether you call it RAM memory, memory sticks, or DIMMs, it is the same part — and every module here ships tested.
What Does Computer RAM Cost? (Refurbished Prices)
Computer RAM (random access memory) is the fast, short-term memory your machine uses for the operating system and everything currently open — more of it means smoother multitasking, larger data sets, and more virtual machines per host. Tested refurbished memory is the cheapest way to add it. Current prices at PCSP for single DDR4 modules run roughly:
- 4GB DDR4: about $12–$15
- 8GB DDR4: about $24–$65
- 16GB DDR4: about $52–$110
- 32GB DDR4: about $110–$280
- 64GB DDR4: about $150–$550
Within each capacity, price moves with speed (MT/s), rank, and type — unbuffered desktop sticks sit at the low end, registered ECC server modules at the top. DDR3 typically runs cheaper still, DDR5 carries a new-platform premium, and multi-module server kits price per stick. Memory prices track a volatile market, so treat these as the refurbished ballpark — roughly 40–70% below equivalent new modules — and check the live listings below for today’s numbers.
Matching Memory to Your Platform
- Type: registered (RDIMM) and load-reduced (LRDIMM) modules for servers; unbuffered ECC and non-ECC for workstations and desktops.
- Speed: memory runs at the speed your CPU generation supports — e.g., 2400 MT/s for Xeon E5 v4, 2933 MT/s for Cascade Lake, 4800+ MT/s for DDR5 platforms. Faster modules downclock; mismatched ranks can refuse to boot.
- Population rules: capacity, rank, and slot order all matter on dual-socket boards. Buying all modules from one source keeps the kit uniform.
Not sure what fits? Send us the server or motherboard model and we will confirm compatibility before you order.
Why Buy Server Memory from PCSP
- Load-tested: every module is exercised in a same-generation server (memtest86+ or vendor diagnostics) — ECC function, full capacity, and rated speed verified.
- Platform-matched: we confirm fit against your exact machine, not just the spec sheet.
- 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.
DDR4 platforms are currently the value pocket of the memory market — see our take on the 2026 RAM price crunch: Refurbished DDR4 Server Memory: The 2026 RAM Price Fix. Building out a whole system? Start from a refurbished server or workstation and we configure the memory with it.
Quick Answers: Buying from PCSP
Can I install faster memory than my server officially supports?
Yes — the module simply runs at the fastest speed your CPU generation allows. A 3200 MT/s RDIMM on a 2933 MT/s platform works fine at 2933; it will never run faster than the platform ceiling. What matters more is uniformity: keep capacity, rank, and vendor consistent across channels, because mismatched ranks can refuse to boot.
RDIMM or LRDIMM — which one do I need?
RDIMMs are the right answer for most server configurations. LRDIMMs earn their premium only when you are chasing maximum capacity — high-density modules on fully populated dual-socket boards. The two types cannot be mixed in one system, so match whatever is already installed — or send us your server model and current configuration and we will spec the kit.
Is used ECC memory safe for production use?
Yes. Memory has no moving parts and rarely wears out — ECC server modules are engineered for years of continuous duty. Each stick here has passed a full test cycle in real same-generation hardware before listing, so what arrives is verified working, not pulled-and-hoped.
What if the memory does not POST in my machine?
First check the population rules — slot order, matched pairs, and rank limits catch most no-boot situations on dual-socket boards. If the modules still will not train, contact us: we will troubleshoot the configuration with you, and dead-on-arrival or non-conforming memory is covered by our 90-day return policy at our expense.
How fast will my order ship?
Orders placed before 1:00 pm EST ship the same business day, and ground shipping is free across the contiguous United States. Want the kit verified first? Send your server model along with the order and we will confirm compatibility before it leaves.
How much does RAM cost right now?
On the refurbished market a single 8GB DDR4 module runs about $24–$65, a 16GB module about $52–$110, and a 32GB module about $110–$280 depending on speed and type — roughly 40–70% below the price of equivalent new memory. Server ECC modules cost more than desktop sticks at the same capacity, and prices move with the memory market, so check the live listings for today’s exact figures.
How much RAM does a desktop PC need?
8GB handles web browsing and office work, 16GB is the comfortable standard for multitasking and light creative work, and 32GB or more pays off for video editing, CAD, virtual machines, and heavy engineering software. Servers scale differently — capacity is set by workload and DIMM population rules, and our team can spec that with you.