---
product_id: 6158507
title: "ACP-EP Memory 512MB PC133 168-PIN SDRAM DIMM (MAC and PC)"
brand: "addon"
price: "£37.32"
currency: GBP
in_stock: true
reviews_count: 12
category: "Add On"
url: https://www.desertcart.co.uk/products/6158507-acp-ep-memory-512mb-pc133-168-pin-sdram-dimm-mac
store_origin: GB
region: United Kingdom
---

# PC133 ultra-fast 133MHz speed 512MB high-capacity SDRAM Dual MAC & PC compatibility ACP-EP Memory 512MB PC133 168-PIN SDRAM DIMM (MAC and PC)

**Brand:** addon
**Price:** £37.32
**Availability:** ✅ In Stock

## Summary

> 💾 Upgrade your rig, upgrade your game — memory that means business.

## Quick Answers

- **What is this?** ACP-EP Memory 512MB PC133 168-PIN SDRAM DIMM (MAC and PC) by addon
- **How much does it cost?** £37.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/6158507-acp-ep-memory-512mb-pc133-168-pin-sdram-dimm-mac)

## Best For

- addon enthusiasts

## Why This Product

- Trusted addon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Boost Your Workflow:** 512MB SDRAM ensures smooth multitasking and faster app performance.
- • **Speed That Keeps Up:** PC133 speed delivers rapid data access at 133MHz for seamless computing.
- • **Effortless Reliability:** 168-pin DIMM design with a lifetime warranty for worry-free longevity.
- • **Universal Compatibility:** Works flawlessly with both MAC and PC systems—upgrade without limits.
- • **Upgrade with Confidence:** Trusted by thousands, this memory ranks in the top 1000 computer memory products.

## Overview

The ACP-EP 512MB PC133 168-PIN SDRAM DIMM is a versatile, high-speed memory upgrade compatible with both Mac and PC desktops. Featuring 512MB capacity and PC133 speed, it enhances system responsiveness and multitasking efficiency. Its 168-pin DIMM form factor ensures easy installation, backed by a lifetime warranty for lasting reliability.

## Description

MEMORY 512MB VALUESELECT VS512MB266, 86SD03

Review: Works great - This memory is priced low and the quality is great. It was a little difficult to install. I had to put the PC on its side and then firmly push in the memory and then make sure the tabs on both sides clicked into place properly. It did seem a little shorter than the original memory, but the specs matched, and the chips looked identical to the original. After boot up the memory showed up and all has been well for months.My apps operate much better with the increased memory.
Review: Works great in my iMac G3 500 - Most resources stated the iMac G3 500Mhz used PC100 ram. I figured PC133 would just train down to 100. Surprisingly MacOS 9.1 (and 10.0) show it running at 133 and it works great. No stability issues. just works. Nice upgrade from 64mb to 1gb.

## Features

- 512 MB SDRAM memory upgrade
- 168 pin DIMM; PC133 speed
- This desktop memory is both MAC and PC compatible
- This allows SDRAM to burst the second and subsequent, contiguous characters at a rate of 10ns
- Lifetime warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00006BA9U |
| Best Sellers Rank | #962 in Computer Memory |
| Customer Reviews | 4.3 4.3 out of 5 stars (139) |
| Date First Available | June 21, 2002 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.8 ounces |
| Item model number | AA32C6464-PC133 |
| Language | English |
| Manufacturer | MEMORY UPGRADES |
| Product Dimensions | 6.75 x 2.25 x 0.5 inches |

## Product Details

- **Brand:** AddOn
- **Compatible Devices:** Desktop
- **Computer Memory Size:** 0.5 GB
- **Memory Speed:** 133 MHz
- **RAM Memory Technology:** sdram

## Images

![ACP-EP Memory 512MB PC133 168-PIN SDRAM DIMM (MAC and PC) - Image 1](https://m.media-amazon.com/images/I/51Qn6-sEKDL.jpg)

## Questions & Answers

**Q: Is this high or low density? thanks.**
A: Low Density.

**Q: Does it work on a Powerbook G3?**
A: This memory is not compatible with the Powerbook.  This is desktop memory.  To determine what is needed for your model, we need more information.  Along with the Powerbook G3, we will need to know the processor speed.  For example Powerbook G3 333 or 233 or 500.Thanks,TrishCustomer CareArch Memory

**Q: Does this work with the ibm netvista a22p 2292?**
A: No idea.  You would have to look up the specs for that machine.  You can find them online.  Typically a specific type of RAM and a range of speeds and capacity will work with a given machine.

**Q: Is compatible with dell optiplex gx240**
A: I have no idea as it was years ago and my computer has moved on to newer device.
Sorrey.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by S***N on March 28, 2013*

This memory is priced low and the quality is great. It was a little difficult to install. I had to put the PC on its side and then firmly push in the memory and then make sure the tabs on both sides clicked into place properly. It did seem a little shorter than the original memory, but the specs matched, and the chips looked identical to the original. After boot up the memory showed up and all has been well for months.My apps operate much better with the increased memory.

### ⭐⭐⭐⭐⭐ Works great in my iMac G3 500
*by K***S on July 26, 2023*

Most resources stated the iMac G3 500Mhz used PC100 ram. I figured PC133 would just train down to 100. Surprisingly MacOS 9.1 (and 10.0) show it running at 133 and it works great. No stability issues. just works. Nice upgrade from 64mb to 1gb.

### ⭐⭐⭐⭐⭐ Worked Great!
*by H***W on February 23, 2012*

I had originally ordered a 256 MB RAM stick from another vendor so I had a total of 512 MB of RAM to install a new OS, but it didn't work so I sent it back. I got this one and it worked perfectly. I was able to reinstall Windows XP Pro SP3 and install the drivers for my wifi PCI card and my 5 input 2.0 USB PCI card. Only issue now is to figure out why the original 256 MB RAM stick is not initialized. That old desktop computer only recognizes the new 512 card, but it is online and fully functional now. I may order another so I have 1 GB of RAM.

## Frequently Bought Together

- ACP-EP Memory 512MB PC133 168-PIN SDRAM DIMM (MAC and PC)
- Saft LS14250 3.6V 1/2AA Lithium Battery, 3.6 Volt 1200mAh, GE Simon XT

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**Shop now:** [https://www.desertcart.co.uk/products/6158507-acp-ep-memory-512mb-pc133-168-pin-sdram-dimm-mac](https://www.desertcart.co.uk/products/6158507-acp-ep-memory-512mb-pc133-168-pin-sdram-dimm-mac)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-14*