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Two green DDR3 DIMM sticks without heat spreaders

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1600MHz CL11 1.5V Lenovo M91P/SFF

SKU CH-8RH1-47VAH

A matched pair of 4 GB DDR3-1600 DIMMs validated for Lenovo ThinkCentre M91p and M91 SFF small-form-factor desktops

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 8GB dual-channel kit boosts multitasking on ThinkCentre M91P
  • DDR3 1600 MHz CL11 timing delivers responsive system performance
  • 5 V unbuffered non-ECC DIMMs match factory voltage spec
  • 240-pin form factor fits M91 SFF memory slots directly
  • Matched 2 x 4 GB pair enables dual-channel bandwidth

Lenovo ThinkCentre M91P/SFF DDR3 Kit

This 8 GB kit contains two 4 GB DDR3 modules built for Lenovo ThinkCentre M91P and M91 SFF desktops. Each stick is a 240‑pin unbuffered DIMM running at 1600 MHz with CL11 timing at 1.5 V. The non‑ECC design matches the original specification for these small‑form‑factor systems.

Upgrading from lower capacity or speed

The kit replaces factory‑installed 2 GB or 4 GB modules and moves the memory bus from 10600 to 12800 transfer rate. The jump is worth it when the workload needs more than 4 GB total or when dual‑channel bandwidth improves integrated graphics responsiveness. Maximum supported memory per socket is 4 GB.

Two‑stick kit for dual‑channel operation

Modules must be installed in matched pairs to enable dual‑channel mode on the four available slots. The 1Rx8 rank layout fits the platform without requiring a heat spreader. A 64‑bit operating system is required to address the full 8 GB capacity.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $2.87 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800DIMM
Total capacity8 GB (2 × 4 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo Thinkcentre M91P / M91 Sff
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 240-pin DDR3 DIMMs fit the four slots in my Lenovo ThinkCentre M91p SFF?

Yes, the 240-pin DDR3 DIMMs are the correct form factor for the four memory slots in the Lenovo ThinkCentre M91p and M91 SFF chassis.

Do I have to install the two 4 GB sticks as a matched pair for dual-channel operation?

The system requires modules to be ordered and installed in pairs to enable dual-channel mode, so both 4 GB sticks must occupy the paired slots.

When would I need to replace these 1.5 V CL11 modules?

Replace them if the system fails to POST, shows memory errors in diagnostics, or if you upgrade beyond the 16 GB maximum supported by the platform.

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