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Key Features
Compatibility
Product Description
Flexx 4GB RAM (4GB x 1) DDR2 667MHz PC2-5300 200-Pin SO-DIMM Memory Module for Mac
Give your older Mac a noticeable speed boost with this Flexx 4GB DDR2 SO-DIMM memory module. It’s built for Macs (and compatible laptops) that use 200-pin DDR2 667MHz (PC2-5300) RAM, helping improve multitasking, reduce slowdowns, and keep vintage systems running smoother for everyday use.
Key Features:
- 4GB single-module upgrade (4GB x 1) — ideal for replacing or expanding existing RAM
- DDR2 667MHz (PC2-5300) for Macs and laptops requiring this specific memory type
- 200-pin SO-DIMM form factor (laptop-style module)
- Improves responsiveness for older macOS workflows and light multitasking
- Perfect for maintaining and extending the life of legacy Mac systems
Included:
- 1 x Flexx 4GB DDR2 667MHz (PC2-5300) 200-Pin SO-DIMM memory module
Product Q&A
Q: How do I know if this RAM is compatible with my Mac?
A: Your Mac must use 200-pin DDR2 SO-DIMM memory running at 667MHz (PC2-5300). If your system requires DDR3, DDR4, or 204-pin/260-pin memory, this module will not fit or work.
Q: Can I mix this 4GB stick with my existing RAM?
A: In many systems, yes — as long as the existing module is also DDR2 667MHz (PC2-5300) 200-pin SO-DIMM. For best stability, matching speed and specs is recommended.
Q: Will it work if my Mac currently has DDR2 800MHz RAM?
A: Only if your Mac officially supports DDR2 667MHz (PC2-5300). Some systems are picky about speed and may require the exact specification listed by the manufacturer.
Q: Do I need any software or drivers?
A: No. RAM is a hardware upgrade — once installed correctly, your Mac will detect it automatically on boot.
Q: My Mac boots but doesn’t show the full 4GB — is that normal?
A: Some older Macs have chipset/firmware limits that can reduce usable memory, especially with certain module configurations. If your model has a known limit, it may not utilise the full amount.
Specifications
- Capacity: 4GB (1 x 4GB)
- Memory Type: DDR2 SO-DIMM
- Speed: 667MHz
- Standard: PC2-5300
- Pin Count: 200-pin
- Module Type: Laptop/Notebook SO-DIMM
Compatibility
-
MacBook: Late 2007 – Mid 2009
Models: MacBook3,1; MacBook4,1; MacBook5,2 -
MacBook Pro: Mid 2007 – Early 2008
Models: MacBookPro3,1; MacBookPro4,1 -
iMac: Mid 2007
Models: iMac7,1 (20-inch and 24-inch) - PC Laptops: Compatible with Intel- or AMD-based PCs that support 200-pin DDR2 SO-DIMM memory
- Memory Standard: Complies with JEDEC specification JESD79-3B
Shipping & VAT
- Free UK Shipping: Delivered in approx. 2 working days
- Express Options: Faster methods available at checkout
- Free Shipping to Ireland: For orders over £100.00
- International Delivery: Times vary by destination; shipped via FedEx or DHL
- 30-Day Returns: Return within 30 days from order date
- UK, Ireland and EU Customers: Free return label provided
- Full Return Policy: Read Here
- Full Shipping Details: Read Here
VAT & Duties Information
UK & EU Customers: The price shown on our website is the final price you pay. No additional VAT, customs duties, or import fees will be charged upon delivery.
Orders are dispatched from Northern Ireland, allowing us to serve customers across the United Kingdom and the European Union without unexpected import charges.
Non-UK and non-EU destinations: Local taxes, customs duties, and import fees may apply and are the responsibility of the recipient.
Payment
Safe payment on our website.
Pay by card, Klarna, PayPal, Apple Pay, G-Pay, Shop Pay, Revolut, Bancontact, iDeal, or even bank transfer.
Customer Service
Email and chat available 24/7
Free number UK: 08001954072
International: +442838341148
Phone Line Opening Hours
- Monday - Friday: 09:00-17:00
Flexx 4GB ram ( 4GB x 1 ) 200-Pin SODIMM DDR2 PC2-5300 memory module
Flexx 4GB RAM (4GB x 1) DDR2 667MHz PC2-5300 200-Pin SO-DIMM Memory Module for Mac
Give your older Mac a noticeable speed boost with this Flexx 4GB DDR2 SO-DIMM memory module. It’s built for Macs (and compatible laptops) that use 200-pin DDR2 667MHz (PC2-5300) RAM, helping improve multitasking, reduce slowdowns, and keep vintage systems running smoother for everyday use.
Key Features:
- 4GB single-module upgrade (4GB x 1) — ideal for replacing or expanding existing RAM
- DDR2 667MHz (PC2-5300) for Macs and laptops requiring this specific memory type
- 200-pin SO-DIMM form factor (laptop-style module)
- Improves responsiveness for older macOS workflows and light multitasking
- Perfect for maintaining and extending the life of legacy Mac systems
Included:
- 1 x Flexx 4GB DDR2 667MHz (PC2-5300) 200-Pin SO-DIMM memory module
Product Q&A
Q: How do I know if this RAM is compatible with my Mac?
A: Your Mac must use 200-pin DDR2 SO-DIMM memory running at 667MHz (PC2-5300). If your system requires DDR3, DDR4, or 204-pin/260-pin memory, this module will not fit or work.
Q: Can I mix this 4GB stick with my existing RAM?
A: In many systems, yes — as long as the existing module is also DDR2 667MHz (PC2-5300) 200-pin SO-DIMM. For best stability, matching speed and specs is recommended.
Q: Will it work if my Mac currently has DDR2 800MHz RAM?
A: Only if your Mac officially supports DDR2 667MHz (PC2-5300). Some systems are picky about speed and may require the exact specification listed by the manufacturer.
Q: Do I need any software or drivers?
A: No. RAM is a hardware upgrade — once installed correctly, your Mac will detect it automatically on boot.
Q: My Mac boots but doesn’t show the full 4GB — is that normal?
A: Some older Macs have chipset/firmware limits that can reduce usable memory, especially with certain module configurations. If your model has a known limit, it may not utilise the full amount.
- Capacity: 4GB (1 x 4GB)
- Memory Type: DDR2 SO-DIMM
- Speed: 667MHz
- Standard: PC2-5300
- Pin Count: 200-pin
- Module Type: Laptop/Notebook SO-DIMM
-
MacBook: Late 2007 – Mid 2009
Models: MacBook3,1; MacBook4,1; MacBook5,2 -
MacBook Pro: Mid 2007 – Early 2008
Models: MacBookPro3,1; MacBookPro4,1 -
iMac: Mid 2007
Models: iMac7,1 (20-inch and 24-inch) - PC Laptops: Compatible with Intel- or AMD-based PCs that support 200-pin DDR2 SO-DIMM memory
- Memory Standard: Complies with JEDEC specification JESD79-3B
Customer Reviews
Wallah ça fonctionne nickel.
Flexx are recomendded by EveryMac. I normally purchase RAM from another supplier but the data on their site left me concerned that the item wouldn't work in the iMac it was intended for, additionally their pricing was steep.
The product was purchased to upgrade a "Vintage" iMac to an unsupported config. Accuracy was essential and the item worked fine.
Service and delivery are also above expectation.
the ram was a good price and delivery was quick. Worked perfectly.
I ordered the 4GB memory RAM and received in few days. It was to upgrade my MacBook Pro early 2008. I easily installed and it works perfectly with 6 GB total.
