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Two green DDR3L ECC registered DIMMs with gold contacts

OWC

OWC 16GB (2x8GB) DDR3L 1600 CL11 240-pin 1.35V ECC Registered RDIMM memory upgrade

SKU CH-VHAP-JWTK8

Dual-channel 16 GB DDR3L 1600 CL11 ECC registered RDIMM kit for HP ProLiant SL2500, SL250s Gen8, SL270s Gen8, SL4545 G7 and WS460c Gen8 servers

  • Capacity16GB (2 x 8GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 16GB (2 x 8GB)

  • ECC registered design protects data integrity in servers
  • 16 GB dual-channel kit boosts multitasking capacity
  • DDR3L 1600 CL11 matches qualified HP ProLiant specs
  • Low 1.35 V operation reduces power draw
  • Validated for SL2500, SL250s Gen8, SL270s Gen8, SL4545 G7, WS460c Gen8

Server ECC Upgrade Kit

This 16 GB kit supplies two 8 GB DDR3L 1600 CL11 registered DIMMs built for HP ProLiant SL2500, SL250s Gen8, SL270s Gen8, SL4545 G7 and WS460c Gen8 servers. It targets administrators who need error-correcting memory to protect data integrity in always-on workloads. The modules run at 1.35 V and carry a 1Rx4 organisation. They are not compatible with standard desktop boards or unbuffered memory slots.

Build Integration Requirements

Each stick uses the 240-pin DDR3L form factor and requires a motherboard that supports registered ECC operation. The kit replaces HP part numbers 731765B21, 731765B211 and 735302001, so it fits directly into qualified ProLiant slots without adapter brackets. Mixing these registered modules with unbuffered DIMMs will prevent boot, so the full channel population must match. No heat spreader is fitted, leaving maximum clearance for dense server chassis airflow.

Sustained Load Behaviour

ECC circuitry detects and corrects single-bit errors on the fly, preventing silent data corruption during long compute runs or virtualisation hosting. Registered buffering reduces electrical load on the memory controller, helping signal stability when all channels are populated at 1600 MHz. The 1.35 V DDR3L voltage lowers power draw compared to standard DDR3, which contributes to cooler operation inside packed 1U or blade enclosures over extended periods.

Highlights

  • ECC registered design protects data integrity in servers
  • 16 GB dual-channel kit boosts multitasking capacity
  • DDR3L 1600 CL11 matches qualified HP ProLiant specs
  • Low 1.35 V operation reduces power draw
  • Validated for SL2500, SL250s Gen8, SL270s Gen8, SL4545 G7, WS460c Gen8

Specifications

BrandOWC
Part Number1R6T31R4016P
Capacity16GB (2 x 8GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemHP ProLiant SL2500
HP ProLiant SL250s Gen8
HP ProLiant SL270s Gen8
HP ProLiant SL4545 G7
HP ProLiant WS460c Gen8

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Questions about this item

What is the CAS latency that governs timing under sustained loads?

The kit runs at CL11, which is the latency figure that determines how quickly the modules respond during continuous operation.

How much power does the kit draw when the server runs all day?

Each module operates at 1.35 V DDR3L voltage, lowering power draw and heat compared with standard 1.5 V DDR3.

Which HP ProLiant models must the buyer already own for this upgrade to work?

Compatible systems are the HP ProLiant SL2500, SL250s Gen8, SL270s Gen8, SL4545 G7 and WS460c Gen8.

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