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Green circuit board with black memory chips, 262-pin DDR5 SODIMM, no heat spreader

OWC

OWC 16GB DDR5 4800 CL40 1Rx8 262-pin 1.1V SODIMM for Precision 7670 7770

SKU CH-MJ33-0BB5H

Adds 16 GB of DDR5 4800 CL40 memory to Dell Precision 7670 and 7770 workstations

  • Capacity16GB
  • Type262-Pin DDR5 Non-ECC SODIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCNo
  • 16 GB DDR5 4800 MHz module boosts multitasking headroom in Precision 7670 and 7770 workstations
  • CL40 latency at 1.1 V delivers responsive performance within JEDEC-standard limits
  • 262-pin SODIMM form factor fits the factory memory slots without adapters
  • Non-ECC unbuffered design matches OEM specifications for warranty-safe upgrades
  • Replaces Dell part numbers 949334, 258275, SNPCYXXPC/16G and SNPVNY72C/16G

Precision 7670 and 7770 memory upgrade

This 16GB DDR5 SODIMM is built to JEDEC PC5-38400 4800MHz CL40 specifications and runs at 1.1V. It is a single-rank 1Rx8 module in the 262-pin form factor, designed as a direct replacement for Dell Precision 7670 and 7770 workstations.

Fits empty slot in supported chassis

The unbuffered non-ECC module installs into an available SODIMM socket without additional power or cooling hardware. Adding it frees capacity for larger datasets, heavier multitasking and smoother virtual-machine performance on the target Precision platforms.

Suits owners of listed Dell Precision models

Buyers with other laptop or workstation models should verify their qualified-vendor lists before purchasing, as this part is validated only for the Precision 7670 and 7770. Systems requiring ECC or registered memory will not be compatible with this module.

Highlights

  • 16 GB DDR5 4800 MHz module boosts multitasking headroom in Precision 7670 and 7770 workstations
  • CL40 latency at 1.1 V delivers responsive performance within JEDEC-standard limits
  • 262-pin SODIMM form factor fits the factory memory slots without adapters
  • Non-ECC unbuffered design matches OEM specifications for warranty-safe upgrades
  • Replaces Dell part numbers 949334, 258275, SNPCYXXPC/16G and SNPVNY72C/16G

Specifications

BrandOWC
Part Number4S8D51R816GB
Capacity16GB
Type262-Pin DDR5 Non-ECC SODIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemDell Precision 7670
Dell Precision 7770

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the single 1Rx8 rank hit a bandwidth ceiling before the CPU does under sustained workloads?

The module runs at DDR5 4800 with CL40 timing, so the memory controller sees one 16 GB rank at JEDEC-standard speed; sustained throughput is limited to that single-rank PC5-38400 data rate.

Does the stick run hot or draw extra power when the Precision 7670 or 7770 is under load all day?

It operates at the standard 1.1 V with no heat spreader, so thermals and power draw stay within normal DDR5 SODIMM limits for continuous operation.

Which slot and BIOS configuration must the laptop already have for this 262-pin SODIMM to be recognised?

The system needs an empty DDR5 SODIMM slot and a BIOS that supports JEDEC DDR5 4800 non-ECC unbuffered memory, as shipped in the Precision 7670 and 7770.

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