R640 is the cheaper buy right now: about $667.70 sold vs $1,432.43 for R440, ~115% less.
Based on completed eBay sales (30d): 10 for R640, 1 for R440. 90 R440 live now · 1186 R640.
At a glance
- PriceR640 — $1,432 vs $668
- Max RAMR640 — 3 TB vs 1 TB
- EfficiencyR440 — 90W idle vs 75W idle
- NoiseR640 — tier 4 vs tier 3
Edge: Dell PowerEdge R640 wins more dimensions.
Specifications
| Spec | R440 | R640 |
|---|
| Vendor / family | Dell PowerEdge | Dell PowerEdge |
| Generation | G14 | G14 |
| Form factor | 1U 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 | 4, Loud | 3, Moderate |
| Typical sold price | $1,432.43 | $667.70 |
R440 sold price trend
2026-02-02$7.38–$1,542.60 · sold median2026-06-14Dot size reflects how many listings back each day (1–3 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