R640 is the cheaper buy right now: about $667.70 sold vs $1,470.91 for R540, ~120% less.
Based on completed eBay sales (30d): 10 for R640, 2 for R540. 10 R540 live now · 1186 R640.
At a glance
- PriceR640 — $1,471 vs $668
- Max RAMR640 — 3 TB vs 1 TB
- EfficiencyR540 — 90W idle vs 75W idle
Edge: Dell PowerEdge R640 wins more dimensions.
Specifications
| Spec | R540 | R640 |
|---|
| Vendor / family | Dell PowerEdge | Dell PowerEdge |
| Generation | G14 | G14 |
| Form factor | 2U rack | 1U rack |
| CPU sockets | 2 | 2 |
| Max RAM | 1 TB | 3 TB |
| RAM speed | 2933 MT/s | 2933 MT/s |
| PCIe gen | PCIe 3.0 | PCIe 3.0 |
| Idle power (1 CPU) | 75 W | 90 W |
| Noise tier | 3, Moderate | 3, Moderate |
| Typical sold price | $1,470.91 | $667.70 |
R540 sold price trend
2025-11-03$401.49–$1,470.91 · sold median2026-06-14Dot size reflects how many listings back each day (1–2 sold comps per point). Hover for details.
R640 sold price trend
2023-11-06$275.27–$17,159.48 · sold median2026-06-14Dot size reflects how many listings back each day (1–30 sold comps per point). Hover for details.
← All price histories