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
Two green DDR2 memory modules with black chips, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 2GB (2x1GB) DDR2 533 Memory Upgrade - A100

SKU CH-CH9Q-AQH42

A 2 GB DDR2 kit (two 1 GB DIMMs) rated at 533 MHz CL4 and validated for the Dell OptiPlex GX520 desktop

  • Capacity2GB (2 x 1GB)
  • Type240-Pin DDR2 SDRAM
  • SpeedDDR2 533 (PC2 4200)
  • CAS LatencyCL4
  • Timing4-4-4
  • Voltage1.8V
  • 2GB kit upgrades Dell OptiPlex GX520 to 4GB max
  • DDR2 533 MHz CL4 timing matches system specs
  • Unbuffered non-ECC 240-pin DIMM installs directly
  • Major brand chips tested for guaranteed compatibility
  • Two 1GB modules 1.8V 2Rx8 64x8 organisation

Compatible Dell OptiPlex GX520 upgrade

This 2GB kit contains two 1GB DDR2 DIMMs built for the Dell OptiPlex GX520 series desktop. The modules run at 533 MHz with CL4 timing and 1.8V voltage. They install directly into the system's 240-pin slots.

Suits owners restoring a GX520

Buyers needing to reach the 4GB maximum or replace failed memory in this specific Dell model will find the correct fit. Systems requiring ECC, registered modules or a different DDR generation cannot use this unbuffered non-ECC kit.

240-pin DDR2 533 CL4 specification

The 240-pin DDR2 interface at 533 MHz with CL4 latency determines whether the modules match the motherboard slots. Verify that the target machine uses this exact generation and pin count before purchase.

Highlights

  • 2GB kit upgrades Dell OptiPlex GX520 to 4GB max
  • DDR2 533 MHz CL4 timing matches system specs
  • Unbuffered non-ECC 240-pin DIMM installs directly
  • Major brand chips tested for guaranteed compatibility
  • Two 1GB modules 1.8V 2Rx8 64x8 organisation

Specifications

BrandComputer Memory Solutions
ModelCM128644200DIMMDR
Capacity2GB (2 x 1GB)
Type240-Pin DDR2 SDRAM
SpeedDDR2 533 (PC2 4200)
CAS LatencyCL4
Timing4-4-4
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemDell Optiplex Gx520 Series Desktop
Package Content2 Memory RAM Sticks

Questions about this item

What comes in the box and do I need anything else to install these modules?

The kit contains two 1 GB 240-pin DDR2 DIMMs. No extra parts are required for a Dell OptiPlex GX520 desktop.

Which capacity version should I pick for a Dell OptiPlex GX520?

This 2 GB kit (2 × 1 GB) fills both memory sockets and reaches the system maximum of 4 GB when combined with another identical kit.

What does the DDR2 533 (PC2-4200) rating mean once the memory is running in the OptiPlex GX520?

The modules operate at 533 MHz with CL4 timing and 1.8 V, matching the GX520's native DDR2-533 bus for stable, non-ECC performance.

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

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.