Dell PowerEdge R730 Memory Upgrade — RAM Prices

Buying the machine, not just the memory? PowerEdge R730xd buyer's guide →, PowerEdge R730 buyer's guide → and PowerEdge R630 buyer's guide →

26 compatible modules·23 in stock·prices updated about once a day·last checked

The R730 is the homelab king of hand-me-down enterprise iron: a 13th-generation dual-socket platform that the off-lease market has made almost free, wrapped around twenty-four DDR4 slots that accept the cheapest registered ECC memory in the market — 2133 and 2400 MT/s grades that newer platforms left behind. Dell's owner's manual documents bus frequencies from 1333 through 2400 MT/s, RDIMMs to 768GB dual-socket and LRDIMMs to a 3TB theoretical ceiling.

Our live table applies the platform's verified rules to the tracked catalog — and this is one platform where the tracker's DDR4-2400 stock is squarely in the sweet spot. Faster DDR4 grades also work, downclocking to the platform's 2400 ceiling, which matters because 2666-rated pulls are sometimes cheaper than 2400-rated ones; the table's 'runs at' column keeps that honest.

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Verified memory rules — Dell R730
DIMM slots
24
Max capacity
3TB
Memory type
DDR4 RDIMM / LRDIMM
Supported speeds
1333-2400 MT/s
Per-DIMM max
128GB

Owner's manual lists memory bus frequencies of 1333, 1600, 1866, 2133 or 2400 MT/s.

RDIMM max 384GB single / 768GB dual processor; LRDIMM max 1536GB single / 3TB dual. DIMM options include 8-32GB 2R RDIMMs and 64/128GB quad-rank LRDIMMs.

Source: Dell official documentation

Not sure what to buy? Run the Memory Finder for this server - it turns these rules into priced, population-valid configurations.

Operating speed depends on CPU generation and DIMMs per channel — Owner's manual lists memory bus frequencies of 1333, 1600, 1866, 2133 or 2400 MT/s.. Always verify against Dell's QVL for your exact configuration.

Compatible modules — live prices, sorted by $/GB

BrandModuleCapacitySpeedType$/GBPrice
SK HynixHMAA8GL7MMR4N64GBDDR4-2400RDIMM$4.92$314.95Buy on Amazon
A-TechM393A2G40DB0-CPB16GBDDR4-2133RDIMM$5.44$86.98Buy on Amazon
SamsungM393A8K40B22-CWD64GBDDR4-2666 (runs at up to 2400 here)RDIMM$6.23$399.00Buy on Amazon
SupermicroB07DFLTWN364GBDDR4-2666 (runs at up to 2400 here)LRDIMM$6.23$399.00Buy on Amazon
A-TechB0BPN414ZJ64GBDDR4-2666 (runs at up to 2400 here)LRDIMM$6.41$410.03Buy on Amazon
SamsungM393A2G40EB1-CPB16GBDDR4-2133RDIMM$7.12$113.94Buy on Amazon
MICRONMTA36ASF4G72PZ32GBDDR4-2400RDIMM$7.19$229.98Buy on Amazon
A-TechB0BPN4FLDX32GBDDR4-2666 (runs at up to 2400 here)RDIMM$7.40$236.78Buy on Amazon
SK HynixHMA84GR7CJR4N-VK32GBDDR4-2666 (runs at up to 2400 here)RDIMM$8.72$279.00Buy on Amazon
SamsungM393A2K43CB2-CTD8Q16GBDDR4-2666 (runs at up to 2400 here)RDIMM$8.75$139.99Buy on Amazon
A-TechB083Q3F5DX32GBDDR4-2400RDIMM$8.91$284.97Buy on Amazon
A-TechB0BPN4L74H32GBDDR4-2933 (runs at up to 2400 here)RDIMM$8.95$286.44Buy on Amazon
A-TechB0CGJFB4TG32GBDDR4-2933 (runs at up to 2400 here)RDIMM$9.17$293.42Buy on Amazon
KingstonKSM24RD4/32MEI32GBDDR4-2400RDIMM$9.21$294.62Buy on Amazon
SamsungM393A4K40CB2-CTD32GBDDR4-2666 (runs at up to 2400 here)RDIMM$10.05$321.56Buy on Amazon
A-TechB0C2FML23M64GBDDR4-2933 (runs at up to 2400 here)RDIMM$10.06$643.61Buy on Amazon
A-TechKTD-PE42964GBDDR4-2933 (runs at up to 2400 here)RDIMM$10.33$661.26Buy on Amazon
KingstonKTD-PE42632GBDDR4-2666 (runs at up to 2400 here)RDIMM$10.94$349.99Buy on Amazon
CrucialB017UGKB3216GBDDR4-2400RDIMM$11.25$179.99Buy on Amazon
SamsungM393A2K43BB1-CTD6Q16GBDDR4-2666 (runs at up to 2400 here)RDIMM$12.06$193.04Buy on Amazon
SamsungM393A8G40AB2-CWE64GBDDR4-3200 (runs at up to 2400 here)RDIMM$12.50$800.00Buy on Amazon
SK HynixHMAA8GR7AJR4N-XN64GBDDR4-3200 (runs at up to 2400 here)RDIMM$13.52$865.00Buy on Amazon
A-TechMTA36ASF8G72PZ64GBDDR4-3200 (runs at up to 2400 here)RDIMM$14.31$916.05Buy on Amazon
SamsungM393A8G40BB4-CWE64GBDDR4-3200 (runs at up to 2400 here)RDIMMout of stock—
SamsungM393A4K40CB1-CRC32GBDDR4-2400RDIMMout of stock—
SamsungM393A2K43DB2-CTD6Y16GBDDR4-2666 (runs at up to 2400 here)RDIMMout of stock—

Upgrade costs today — computed live

12× 32GB DDR4-2400 (384GB) · leaves 12 slots free · MICRON MTA36ASF4G72PZ$2759.76
24× 32GB DDR4-2400 (768GB) · MICRON MTA36ASF4G72PZ$5519.52
12× 64GB DDR4-2400 (768GB) · leaves 12 slots free · SK Hynix HMAA8GL7MMR4N$3779.40
12× 16GB DDR4-2133 (192GB) · leaves 12 slots free · A-Tech M393A2G40DB0-CPB$1043.76

Each scenario is priced from the cheapest compatible in-stock module at that capacity, at the timestamp above. Configurations never exceed the platform's 24 DIMM slots. Populate channels per the OEM rules below for full bandwidth.

Dell R730 — OEM population table

Every row below is drawn from the same Dell document — nothing here is inferred from a sibling platform or a community source.

FieldDocumented valueSource
DIMM slots24Dell manual ↗
Max system capacity3TBDell manual ↗
Max per-DIMM capacity128GBDell manual ↗
Supported module classesDDR4 RDIMM / LRDIMMDell manual ↗
Supported speed range1333-2400 MT/sDell manual ↗
Documented DPC / speed step-down behaviorOwner's manual lists memory bus frequencies of 1333, 1600, 1866, 2133 or 2400 MT/s.Dell manual ↗
Documented mixing / rank restrictionsMinimum of one memory module must be installed per processor (minimum 4GB single processor, 8GB dual).Dell manual ↗
CPU-generation dependencyRDIMM max 384GB single / 768GB dual processor; LRDIMM max 1536GB single / 3TB dual. DIMM options include 8-32GB 2R RDIMMs and 64/128GB quad-rank LRDIMMs.Dell manual ↗

Paraphrased from Dell's official documentation. Modules rated above the documented speed range are safe to install — a documented vendor behavior is that they run at the platform's supported speed for your DPC configuration rather than their own label speed, never at a speed we are claiming for them. See our population-rules and mixing-rules pages for how this platform's rules compare to others we've checked.

Buying memory for the R730, practically

R730 shopping is bargain-hunting by design, so exploit the platform's forgiving floor: anything from 2133 up qualifies, which means the cheapest per-GB DDR4 in the entire market is usually eligible — including 2400 and 2666 pulls whose newer-platform demand has evaporated. The table's 'runs at' column shows the downclock honestly; your wallet will not notice the difference your benchmarks cannot measure.

Populate with intent even on a budget: both sockets fed evenly, matched modules per channel, and one spare stick in the drawer per eight deployed — thirteenth-generation replacement stock will only get scarcer as the fleet sunsets. At current used prices, over-buying capacity now beats shopping again in two years against a thinner market.

How this page keeps itself honest

Every specification in the rules box above was verified against the Dell document linked beneath it before this page went live — nothing is inferred from forum lore or reseller listings, and any field the document does not state is simply absent here rather than guessed. The compatibility table applies those verified rules mechanically to our tracked module catalog: generation must match, the module type must appear in the platform's allowed list, speed must meet the documented floor, and per-DIMM capacity must respect the stated maximum. What survives that filter is sorted by live $/GB — computed against true 1024-based capacities — and refreshed on the same rolling cycle as every price on this site.

Two honest limits worth stating. First, our catalog tracks the retail module market, not Dell's option-part universe — a module absent from the table is not declared incompatible, merely untracked; the rules box tells you what any candidate must satisfy. Second, a compatibility table is not a QVL: Dell validates specific part numbers against specific configurations, and the disclaimer above the table is not boilerplate but the actual final step. Use this page to find the market's honest price for compliant memory; use the vendor's QVL to bless the exact part before a production order.

Who upgrades the R730

Nobody specs a new R730 in 2026; everybody upgrades one. The buyer is the homelab operator or bootstrapped small business that picked up a complete dual-Xeon unit for the price of a consumer motherboard and now wants the one thing the platform still does at modern standards: hold enormous amounts of cheap RAM. 256GB in an R730 — 8× 32GB at live DDR4 prices — costs less than 32GB of DDR5, and for the VM farms and storage arrays these machines run, capacity beats speed every time.

The used-purchase ritual applies in full force here: memtest86+ on arrival, ECC counters watched for the first weeks, and matched modules per channel to keep the elderly memory controller happy. Our DDR4 hub carries the full refurb guidance; the R730 is its ideal student.

Frequently asked questions

What is the maximum RAM for the Dell R730?

Dell's documentation puts the platform maximum at 3TB across 24 DIMM slots, with single modules supported up to 128GB. Reaching the maximum requires the largest supported DIMM in every slot — most real upgrades target far less, which is what the live scenarios above price.

What type of RAM does the R730 take?

DDR4 RDIMM and LRDIMM at 1333 to 2400 MT/s, per Dell's documentation. Consumer non-ECC and XMP/EXPO kits are not supported — every module in the table above is a verified ECC server part of the correct type.

Can I mix DIMM sizes or speeds in the R730?

Dell's stated rules: Minimum of one memory module must be installed per processor (minimum 4GB single processor, 8GB dual). Mixed speeds, where allowed, run at the slowest module's speed — buying identical part numbers per channel remains the safe pattern.

Will faster DDR4 modules work in the R730?

Yes - a module rated above 2400 MT/s downclocks to 2400 and runs normally, which is why the table marks those rows "runs at up to 2400 here", while modules rated below 1333 MT/s are excluded because Dell does not list them as supported for the R730. That is Dell's own support matrix speaking, not a guess.

How many DIMMs do I need for 512GB in the R730?

8× 64GB fills 512GB and leaves 16 of the 24 slots free for later growth. Fewer, larger DIMMs preserve expansion room; more, smaller DIMMs are sometimes cheaper per GB — the live table above lets you price both routes at today's numbers.

Should I buy new or used RAM for the R730?

Used and refurbished DDR4 ECC is a rational choice for this platform — DRAM has no meaningful wear mechanism, and tested pulls from decommissioned fleets often undercut new pricing substantially. Run memtest86+ on arrival and watch ECC counters for the first weeks. For production fleets, new modules with warranty remain the conservative default.

What is the cheapest way to fill an R730 with RAM?

Used 32GB DDR4-2400 RDIMMs (2Rx4) from decommissioned fleets are the platform's classic fuel — abundant, tested, and cheap per GB. Eight of them delivers 256GB across both sockets' channels; check the live table for today's cheapest qualifying part and note that 2666-rated pulls also qualify, downclocking harmlessly to 2400.

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