Sony

Sony KSY-GRX500/256 256MB DDR SDRAM Memory

Name: Sony KSY-GRX500/256 256MB DDR SDRAM Memory
Brand: Sony
SKU: KSY-GRX500/256

Kingston 256MB DDR SDRAM module provides a straightforward memory upgrade for Sony VAIO PCG-GRX500 Series laptops.

$39.99*

✓ In Stock on Amazon.com

*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Sony KSY-GRX500/256 is a 256MB DDR SDRAM memory module in a 200-pin SO-DIMM form factor, sourced from Kingston and designed for the Sony VAIO PCG-GRX500 Series of laptops. For owners of these legacy machines, finding compatible DDR1 memory can be a challenge as the technology has long been superseded by newer standards. This module addresses that need by providing a tested, compatible upgrade path that can help improve multitasking and application responsiveness on the GRX500 platform.

While 256MB is minimal by today's standards, adding this module to a VAIO PCG-GRX500 that is running at or near its original memory configuration can provide a noticeable improvement when running period-appropriate software and operating systems such as Windows XP. The 200-pin SO-DIMM design ensures correct physical and electrical compatibility with the laptop's memory slot. This module is best suited for users maintaining, restoring, or extending the life of their existing VAIO hardware rather than those seeking modern performance levels.

Specifications

Brand

Sony (Kingston)

Model

KSY-GRX500/256

Capacity

256MB

Type

DDR SDRAM

Pin Count

200-Pin SO-DIMM

Compatibility

Sony VAIO PCG-GRX500 Series

Pros & Cons

👍 Pros

Designed and tested for compatibility with Sony VAIO PCG-GRX500 Series laptops
200-pin SO-DIMM form factor matches laptop memory slot requirements
Provides a low-cost path to increase system memory on aging hardware
Kingston-sourced module offers reliable memory quality

👎 Cons

256MB capacity is very small by modern standards and limits practical performance improvement
Only compatible with the Sony VAIO PCG-GRX500 Series, making it a niche product
DDR1 technology is obsolete, with limited availability and no upgrade path
Will not meaningfully improve performance for tasks beyond the laptop's original era of software

Frequently Asked Questions

Which specific laptops is the KSY-GRX500/256 memory module compatible with?

This module is designed specifically for the Sony VAIO PCG-GRX500 Series laptops. It is not guaranteed to work in other laptop models.

Is this a laptop (SO-DIMM) or desktop (DIMM) memory module?

This is a 200-pin SO-DIMM module, which is the laptop form factor. It will not fit in a standard desktop memory slot.

Can I use this module alongside the existing memory already installed in my VAIO?

Yes, provided your VAIO PCG-GRX500 has an available memory slot. The module can be added alongside existing memory to increase total system RAM.

What generation of DDR is this module?

This is a DDR (DDR1) SDRAM module, which is the first generation of DDR memory. It is not compatible with DDR2, DDR3, or later memory slots.