Choosing the right memory module for a printer can dramatically improve performance for large print jobs, reduce spooling delays, and unlock advanced printer features. This guide presents the top printer memory modules available today, based on extensive research, compatibility testing on representative printers, and synthesis of expert and consumer feedback.
How we tested and chose
What we did:
- Benchmarked installation and recognition across representative printer models where possible, focusing on common office lasers and production printers.
- Measured real-world effects: spooling time, ability to handle complex documents (large PDFs, graphics), and multi-job queues.
- Reviewed manufacturer specs (capacity, type, pin count, voltage) and cross-checked part numbers for exact model compatibility.
- Considered build quality, warranty and return policies, price, and user feedback from buyers who installed these parts in real environments.
How factors influenced rankings:
- Compatibility (exact part number fit) was critical — even a fast module is worthless if the printer won't accept the form factor.
- Real-world performance (faster spooling, fewer out-of-memory errors) tipped the scales over raw specs alone.
- Value and support (warranty, vendor returns) helped promote lower-cost modules that reliably worked in target printers.
Who this guide is for: IT technicians upgrading aging office printers, small-business owners who want faster print throughput, and anyone troubleshooting out-of-memory errors on specific printer models.
512MB 100‑Pin DIMM
A straightforward 512MB 100‑pin DDR module designed for legacy printers. Affordable, simple to install, and ideal for older office printers that need a quick memory boost to handle moderate print jobs without replacing hardware.
Why pick this as the Best Budget Pick
The 512MB 100‑pin DDR module is the clearest budget win for older printers that accept a 100‑pin DIMM format. It offers a meaningful capacity jump that often eliminates common out‑of‑memory errors when printing multipage PDFs or complex graphics. Installation is typically plug‑and‑play — most printers recognize the module immediately and report the increased RAM in configuration pages.
Standout features include the full 512MB capacity at a very low price and a lifetime‑style compatibility promise from the manufacturer. This module is most useful for legacy workhorse printers used in small offices where replacing the entire unit isn't economical. Downsides: this form factor is uncommon in newer models, so confirm the printer’s required part number before buying. If your printer supports 100‑pin DDR modules, this is the lowest‑cost way to extend its usable life.
Xerox 256MB Module
OEM‑style 256MB memory crafted for Xerox Phaser 8560 series printers. Designed to meet manufacturer specs, it delivers reliable performance and compatibility for demanding office environments that rely on Xerox hardware.
Why this is our Premium Choice
This 256MB memory module is targeted at Phaser 8560 series machines and is positioned as a higher‑trust option for Xerox owners who prefer components closely matched to OEM specifications. The module provides stable operation under heavy print loads and ensures full compatibility with advanced features and large print jobs that the stock memory struggles with.
Highlights include precise fit for the 8560 family, manufacturer‑verified part references, and typically tighter quality control than generic modules. The tradeoff is price — it costs noticeably more than third‑party alternatives — but for IT managers running Xerox fleets, the reduced risk of incompatibility and the smoother management experience often justify the premium. If you run a Xerox‑centric environment and need predictable, vendor‑aligned upgrades, this is the right choice.
256MB DDR2 Brothers
A 256MB DDR2 144‑pin 16‑bit SODIMM compatible upgrade built for specific Brother laser printers. Offers reliable performance improvements for mid‑range office models at an attractive price point.
Why this offers the Best Value for Money
This 256MB DDR2 144‑pin 16‑bit module targets Brother models (MFC‑L8600CDW, L8850CDW, L9550CDW) and strikes a strong balance between price and compatibility. For users of these printers, upgrading to this module frequently resolves memory‑related errors and speeds up complex print jobs without the premium of OEM modules.
Technical strengths include the correct DDR2 SODIMM form factor and the 16‑bit data path expected by the supported Brother models. The module is supplied with a lifetime replacement warranty by the vendor, which strengthens its value proposition. Limitations: it's model‑specific — verify exact part compatibility — but in supported printers this module delivers near‑OEM performance for a fraction of the cost.
256MB PC2‑4200 SODIMM
Compact 256MB PC2‑4200 (144‑pin) SODIMM tailored for HP LaserJet Pro 400 M451 series. Small form factor, low cost, and designed to restore multi‑job handling and complex document printing on supported HP models.
Why this is our Editor's Choice
The 256MB PC2‑4200 SODIMM is a great all‑around upgrade for the HP LaserJet Pro 400 (M451 series). Its 144‑pin SODIMM form factor and PC2‑4200 specification match what these HP printers expect, delivering stable recognition and a tangible improvement in handling graphics‑heavy and multipart documents.
What sets this module apart is the combination of broad compatibility within a popular HP family, minimal setup friction, and consistently positive user reports about reduced spooling and faster job throughput. It’s a reliable, inexpensive upgrade that many small IT teams can deploy without specialized tools. The only caution is to confirm the exact model variant (M451dn/dw/nw) before ordering to ensure the correct memory type.
Quick comparison — key differences
- 512MB 100‑Pin DIMM (Best Budget Pick) — Large capacity for legacy 100‑pin printers; best when you need a low‑cost add‑on for older hardware. Price: $19.95
- Xerox 256MB Module (Premium Choice) — OEM‑oriented option for Phaser 8560 series; higher confidence in fit and manufacturer alignment. Price: $34.51
- 256MB DDR2 144‑Pin (Best Value for Money) — Correct form factor for Brother mid‑range models; great price and warranty backing. Price: $19.50
- 256MB PC2‑4200 SODIMM (Editors Choice) — Best practical upgrade for HP LaserJet Pro 400 M451 series; balanced compatibility and real‑world improvements. Price: $19.95
Best overall: For most readers upgrading a currently supported printer, the Editor’s Choice — the 256MB PC2‑4200 SODIMM for HP provides the best blend of compatibility, documented real‑world impact, and low cost.
Best alternative for older fleets: If you manage legacy machines that accept 100‑pin DIMMs, the 512MB 100‑pin option stretches budget further.
Premium pick: Choose the Xerox module when you need vendor‑level confidence in a Xerox fleet.
Final recommendation
Upgrading printer memory is one of the most cost‑effective ways to extend printer life and improve throughput for complex jobs. Our testing and research show that choosing the correct form factor and exact part compatibility matters more than raw capacity alone. We recommend:
- If you run HP LaserJet Pro 400 (M451) models: pick the 256MB PC2‑4200 SODIMM (Editor’s Choice) for reliable performance gains.
- If you operate Brother mid‑range printers listed above: the 256MB DDR2 144‑pin module gives the best value and warranty support.
- For older, 100‑pin DIMM‑accepting printers on a budget: the 512MB 100‑pin module breathes new life into legacy hardware.
- If you manage a Xerox Phaser 8560 fleet and want tighter OEM alignment: opt for the Xerox 256MB premium module.
All recommendations are grounded in hands‑on testing where possible, cross‑checked part numbers, and synthesis of user feedback. Before purchasing, verify the exact memory type, pin count, and part number your printer requires — this is the single most important step to ensure a successful upgrade.