We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with black memory chips, gold edge connector, thin rectangular SODIMM module

Computer Memory Solutions

Computer Memory Solutions CM512648500SODRH 4GB DDR3 1066MHz CL7 SODIMM memory upgrade

SKU CH-P8B7-PK0RR

4GB DDR3 1066MHz CL7 SODIMM upgrade for compatible Acer Aspire 7551 models

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • Guaranteed compatibility with Acer Aspire 7551 series laptops
  • 4 GB capacity adds responsive multitasking headroom
  • DDR3 1066 MHz CL7 timing delivers snappy data access
  • 5 V unbuffered SODIMM installs without extra cooling
  • Single 204-pin module upgrades one slot instantly

Memory upgrade for Acer Aspire 7551

This 4 GB DDR3 SO-DIMM module is built for Acer Aspire 7551 series laptops including the 7551-7422, 7551-3634 and 7551-2531 models. It runs at 1066 MHz with CL7 timings and 1.5 V unbuffered operation. The single 204-pin stick uses a 2Rx8 layout without a heat spreader.

Suitable for owners of listed models needing

Buyers with laptops outside the Acer Aspire 7551 family should verify their exact memory requirements before purchasing. Systems that need ECC or registered modules cannot use this unbuffered non-ECC stick. Laptops limited to a single memory slot gain no further capacity from this kit.

DDR3 1066 CL7 204-pin SO-DIMM specification

The PC3-8500 speed rating and CL7 latency define whether this module matches the original hardware. Confirm the target laptop accepts 2Rx8 unbuffered DDR3 at 1.5 V to ensure correct operation.

How it compares

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

Price $17.99
Cheaper than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512648500SODRH
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsAcer Aspire 7551-7422, 7551-3634, As7551-2531
In the box
Included items1 Memory RAM Stick

Questions about this item

Will this 204-pin DDR3 SO-DIMM fit my Acer Aspire 7551-7422 notebook?

Yes, the module is listed as compatible with the Acer Aspire 7551-7422, 7551-3634, 7551-2531 and 7551-3464 models.

Can I keep my existing PC3-8500 CL7 memory and add this 4 GB stick?

It runs at 1066 MHz with 7-7-7 timing and 1.5 V, matching the PC3-8500 CL7 specification so it will operate alongside identical modules.

How do I confirm the new memory is detected at 1066 MHz after installation?

Check the BIOS memory information or a system utility such as CPU-Z; it should report 4 GB, DDR3-1066 and CL7 latency.

More in Model-Specific Memory Upgrades

Similar items