Lenovo Lenovo Sr950 48Xdimm Slot 4Cpu Socket 6Xfans 24Xsff Cto — High-Density Server Chassis for Enterprise Use (Lenovo)

How Much Does Lenovo SR950 48xDIMM Slot 4*CPU Socket 6xFans 24xSFF CTO Cost in 2026?

The Lenovo SR950 48xDIMM Slot 4*CPU Socket 6xFans 24xSFF CTO is currently listed in the used market at a fixed price of $1,199. This is a mid-tier condition B unit, and you can expect to pay between $1,100 and $1,300 for similar units depending on the refurbishment quality and vendor. Refurbished units from vendors like Axus Technology and Ferrotec typically offer better warranties and performance guarantees, often including 12 months of coverage. Compared to a new unit, which can cost upwards of $3,000, this represents a savings of 40–60%.

Buying a used SR950 can save a data center operator $1,800 per unit, which translates to $18,000 in savings for a 10-unit deployment. However, if the unit fails within the first 6 months due to a faulty power supply or overheating, the cost of downtime can exceed $1,500 per hour in mission-critical environments. Always verify the unit's condition and thermal performance before purchase.

Lenovo SR950 48xDIMM Slot 4*CPU Socket 6xFans 24xSFF CTO Specifications and Compatible Tools

The Lenovo SR950 is a 4U rackmount chassis with 48 DIMM slots, 4 CPU sockets, 6 fans, and 24 SFF drive bays. It typically supports Intel Xeon Scalable processors and DDR4 memory modules. The chassis is designed for high-density compute workloads and is commonly found in data centers built between 2019 and 2021. The fan system is typically rated for 100,000 operational hours, and the drive bays are compatible with 2.5" SAS or SATA drives.

This unit is commonly used with Lenovo ThinkSystem SR950 servers and requires a compatible power supply such as the Lenovo 1300W Redundant PSU (4Y84A33848). Incompatibility with non-verified PSUs, such as the HP 1200W 4Y84A33848, can lead to thermal throttling and premature fan failure. A failed fan can lead to overheating and a system shutdown, costing up to $2,000 in downtime for a single incident.

What to Check Before Buying a Used Lenovo SR950 48xDIMM Slot 4*CPU Socket 6xFans 24xSFF CTO in 2026

1. Production Year: Units produced between 2019 and 2021 are most common. Units older than 2018 may have exceeded their expected 100,000-hour fan lifespan.
2. Fan Health: Use a thermal imaging camera to check for hotspots and perform a fan speed test using Lenovo’s diagnostic tool. Fans running below 2,000 RPM under load should be replaced.
3. Power Supply Condition: Check for bulging capacitors and test output voltage. A PSU with more than 80% load at 12V should be rejected.
4. Drive Bays: Ensure all 24 SFF bays are functional and the backplane shows no signs of corrosion. Reject if more than 2 bays are non-responsive.
5. Thermal Management: Run a stress test under full load and monitor temperatures. If the chassis exceeds 45°C under 48 DIMMs and 4 CPUs, it should be rejected.

Failing to perform these checks can result in a $3,000+ repair bill due to overheating or power failure within the first 3 months of operation.

FAQ

Q: Can I use the Lenovo SR950 with non-Intel processors?
A: No. The SR950 is designed for Intel Xeon Scalable processors. Using an AMD EPYC CPU, such as the 7742, will not fit in the LGA 4189 socket and will result in a $1,200+ motherboard replacement cost.

Q: How long can I expect the SR950 to last in a data center?
A: With proper maintenance, the SR950 can last 5–7 years. Fans and PSUs are the most common failure points, with PSUs typically needing replacement after 4 years of continuous use.

Q: What is the difference between the SR950 and the HP DL580 Gen10?
A: The SR950 has 48 DIMM slots and 4 CPU sockets, while the HP DL580 Gen10 has 64 DIMM slots and 4 CPU sockets. The HP model is more expensive new, costing up to $4,500, but the SR950 offers better value in the used market.

Q: Should I replace the fans if they are over 3 years old?
A: Yes. Fans over 3 years old are past their 100,000-hour lifespan and are more likely to fail. A fan failure can lead to a $2,500+ downtime event in a 24/7 operation.

Q: Can I upgrade the SR950 to NVMe drives?
A: Yes, the 24 SFF bays support NVMe SSDs. However, ensure the backplane is compatible with the specific NVMe model. A mismatch can cause data corruption and require a $1,000+ data recovery service.