PowerEdge R940

The Dell - Alienware R940 is engineered for dependable scale and predictable memory behavior at datacenter scale.

Why it’s built for IT teams:

• Scalable compute footprint: 4 × Intel Xeon Scalable (2nd Gen) CPUs with 6 memory channels per CPU.
• Deterministic memory topology: 12 DIMM slots total to support up to 3 TB using DDR4 RDIMM ECC.
• Reduced deployment risk: Proven Match™ converts controller rules and OEM topology into pre‑validated kits that install cleanly, train to the correct frequency, and prevent unsupported mixes.

Outcome for you: faster, lower-risk upgrades that behave like OEM memory—without guesswork or field surprises.

• CPU Sockets: 4 × Intel Xeon Scalable (2nd Gen)
• Channels per CPU: 6
• DIMM Slots: 12 total (up to 2 DIMMs/channel)
• Memory Type: DDR4 RDIMM ECC
• Controller Speeds: 1DPC up to 2933 MT/s; 2DPC typically 2666 MT/s
• Max Capacity: 3 TB Reg ECC RDIMMs
• Last Reviewed (freshness): 2026-02-12

Speed behavior (practical impact):

• The CPU memory controller sets the actual bus speed. At 1 DIMM per channel (1DPC) the platform commonly reaches up to 2933 MT/s. When populated with 2 DIMMs per channel (2DPC), controllers frequently step to 2666 MT/s to maintain stability. Proven Match™ listings show the configured, real‑world speed—not just the DIMM label.

Bank Schema (Population Map)

• Fastest (1DPC): Populate one DIMM per channel across both CPUs to maximize bandwidth per DIMM.
• Balanced (2DPC): Add the second DIMM per channel mirrored across CPUs to increase capacity while maintaining symmetry.
• Maximum: Fill remaining slots symmetrically for maximum system capacity.

Proven Match™ only surfaces controller‑safe, topology‑compliant configurations to ensure predictable training and operation.

Compatible Memory Types

• Curated modules from Samsung, Micron, and Hynix for DDR4 RDIMM ECC.
• Zero‑mix policy: No RDIMM/LRDIMM mixing; densities matched per channel.
• Unsupported combinations are omitted from the catalog to prevent invalid or unstable builds.

Validation Tokens Every configuration visible under Proven Match™ has passed three gates:

1. JEDEC DDR4 compliance
2. Intel Xeon Scalable (2nd Gen) controller rules (1DPC/2DPC)
3. OEM slot topology verification

Only builds that satisfy all three are published—stable, balanced, and performance‑true.

Mid Tier — predictable capacity and bandwidth for:

• Virtualization (higher VM density)
• Databases / OLTP
• App servers
• Streaming ETL

Max Tier — for memory‑heavy, latency‑sensitive processing:

• In‑memory analytics (Spark/Arrow)
• AI/ML fine‑tuning or training
• ERP consolidation
• VDI at scale

Benefit: Upgrades are tied to measurable outcomes—capacity and bandwidth scale predictably without introducing instability.

Pick the outcome you need: Fastest (1DPC) or Largest (2DPC/Max). Every kit shows real‑world speed and carries the Proven Match™ stamp so you can deploy with confidence.

• Lifetime warranty
• Advance replacement
• Server‑savvy support