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Green rectangular 204-pin DDR3 SODIMM module with black chips and gold contacts

OWC

OWC 8S5D31R802GB 2GB DDR3 1066 CL7 1Rx8 204-pin 1.5V SODIMM memory upgrade

SKU CH-5EEZ-GJNA1

2GB DDR3 1066 CL7 SODIMM upgrade for ThinkPad W500, W700, W700ds, X201, X201i, X201s

  • Capacity2GB
  • Type204-Pin DDR3 Non-ECC SODIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCNo
  • Boosts system responsiveness with 2GB DDR3 1066 CL7 module
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • Simple DIY installation fits 204-pin SODIMM slots
  • Tested to meet or exceed OEM specifications for Lenovo ThinkPad W500 W700 W700ds X201 X201i X201s
  • Low 1.5V operation reduces power draw and heat

System-specific DDR3 SODIMM

This 2GB OWC DDR3 module runs at 1066 MHz with CL7 latency and 1.5 V operation. It uses a 204-pin unbuffered non-ECC design built to JEDEC and RoHS standards. The part number is 8S5D31R802GB and it is validated for the listed ThinkPad models.

Suited for ThinkPad W500 W700 W700ds X201 X201i

Buyers upgrading one of these notebooks can install the module as a direct drop-in replacement. Systems that require ECC registered memory or a different pin count will not accept this stick. Buyers needing more than 2 GB per slot should look at higher-capacity alternatives.

204-pin DDR3 1066 CL7 1.5 V specification

The single decisive attribute is the 204-pin DDR3 1066 CL7 1.5 V interface; only laptops and mini PCs wired for that exact electrical and mechanical standard will recognise the module. Verify the platform documentation before purchase.

Highlights

  • Boosts system responsiveness with 2GB DDR3 1066 CL7 module
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • Simple DIY installation fits 204-pin SODIMM slots
  • Tested to meet or exceed OEM specifications for Lenovo ThinkPad W500 W700 W700ds X201 X201i X201s
  • Low 1.5V operation reduces power draw and heat

Specifications

BrandOWC
Part Number8S5D31R802GB
Capacity2GB
Type204-Pin DDR3 Non-ECC SODIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkPad W500
Lenovo ThinkPad W700
Lenovo ThinkPad W700ds
Lenovo ThinkPad X201
Lenovo ThinkPad X201i

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Questions about this item

How do I install this 204-pin SODIMM in my ThinkPad W500 and what step do people get wrong?

Power off, remove the battery, open the memory door, align the notch on the 204-pin DDR3 stick with the slot key, press firmly until both side clips snap shut; the step often missed is pushing hard enough to hear both clicks.

What maintenance or replacement will this 2GB DDR3 module need later?

No routine maintenance is required; if errors appear, reseat the stick and run a diagnostic to confirm the module is at fault before replacing it.

What limit shows up first under sustained use with this CL7 1.5V module?

The 2GB capacity ceiling is reached before thermal or voltage limits, so heavy multitasking will page to storage rather than overheat the unbuffered DRAM.

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