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Green circuit board with gold edge connector and black memory chips

OWC

OWC 4GB DDR3L 1600 CL11 2Rx8 1.35V SODIMM Dell Vostro 2421

SKU CH-QNXZ-0H8H1

A single 4GB DDR3L 1600 CL11 SODIMM module upgrades the Dell Vostro 2421 with 1.35V low-voltage memory for faster multitasking

  • Total capacity4 GB
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 4GB capacity adds multitasking headroom for Dell Vostro 2421
  • DDR3L 1600 speed delivers responsive everyday performance
  • 35V low voltage reduces power draw and heat
  • JEDEC standard build ensures warranty‑safe compatibility
  • 204‑pin SODIMM form factor fits the laptop slot directly

OWC 4GB SODIMM for Dell Vostro 2421

This OWC module provides a 4GB DDR3L memory upgrade for the Dell Vostro 2421. It uses a 204-pin SODIMM form factor and operates at 1600 speed with CL11 latency. The single module delivers a straightforward capacity increase for the specified system.

Suitable for Vostro 2421 owners adding memory

Builders who need ECC error correction or registered modules should look elsewhere. This non-ECC unbuffered design does not support those requirements. Buyers needing a different capacity or voltage than 1.35V must choose another part.

Runs at 1.35V low voltage

The module operates at 1.35V, matching the DDR3L standard for reduced power draw. Verify that your Vostro 2421 accepts this voltage before purchase. A mismatched voltage will prevent the system from booting correctly.

How it compares

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

Price $19.99
Cheaper than about 91% 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 $5.00 per GB
Cheaper than about 77% 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 nameOWC
Part number1S6T32R804 GB
Total capacity4 GB
Product type204-Pin DDR3L Non-ECC SODIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsDell Vostro 2421

Questions about this item

What does the 1600 speed rating mean for daily use in my Vostro 2421?

The module is rated at PC3L-12800, so the memory controller will read and write at up to 1600 MT/s; actual throughput depends on the laptop's chipset and any other installed modules.

How does the 204-pin DDR3L interface limit performance?

The 204-pin SODIMM form factor carries the DDR3L 1.35V signal; bandwidth is capped at the PC3L-12800 specification and the system cannot run faster memory.

Will this stick fit the memory slot in a Dell Vostro 2421?

Yes, it is a 204-pin unbuffered non-ECC SODIMM built to the exact physical and electrical spec for the Vostro 2421.

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