PNY

Memory Master 4 GB (2 x 2GB) DDR2 800 MHz PC2-6400 Desktop DIMM Memory Modules MMD4096KD2-800

Name: Memory Master 4 GB (2 x 2GB) DDR2 800 MHz PC2-6400 Desktop DIMM Memory Modules MMD4096KD2-800
Brand: PNY
SKU: B0036WTB18
Price: 18.12 USD
Availability: InStock

Bottom line: The Memory Master 4 GB DDR2 800 MHz PC2-6400 Desktop DIMM Memory Modules ($18.12 on Amazon as of 2026-10-06): 4GB dual-channel kit (2x2GB) fills both DDR2 DIMM slots at once; main trade-off: DDR2 only, not compatible with DDR or DDR3 motherboards.

$18.12

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🛒 See live eBay price Also on Amazon — $18.12 Compare to similar memory & ram

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

✓ 4GB dual-channel kit (2x2GB) fills both DDR2 DIMM slots at once
✓ PC2-6400 800MHz, the fastest standard DDR2 desktop speed
✓ Lifetime parts and labor warranty from PNY
✓ Standard 240-pin DIMM drops into most DDR2 desktop boards

Cons

✗ DDR2 only, not compatible with DDR or DDR3 motherboards
✗ 240-pin desktop DIMM won't fit laptop SODIMM slots
✗ 4GB total is modest for modern multitasking workloads
✗ Legacy DDR2 platform with no path to faster speeds

Manufacturer description

DDR2 is the next generation of DDR memory. DDR2 memory features faster speeds, greater bandwidth, lower power consumption and enhanced thermal performance. Although DDR2 modules are the same physical dimension as DDR modules, the plug-in connector configuration is different and as such DDR2 modules are not compatible with PCs requiring DDR modules, and vice-versa.

SpecPicks Verdict

SpecPicks scored Memory Master 4 GB DDR2 800 MHz PC2-6400 Desktop DIMM Memory Modules using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. PNY's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Warranty Terms - Parts - Lifetime
Warranty Terms - Labor - Lifetime
Memory Size - 4GB
Speed - 800MHz
Pin Configuration - 240-pin DIMM

Full Specifications

Brand	PNY
Voltage	1.8 Volts
RAM Size	4 GB
Form Factor	Desktop
Memory Speed	800 MHz
Model Number	MMD4096KD2-800
Number of Pins	240
Mfr Part Number	MMD4096KD2-800
Memory Generation	DDR2
Compatible Devices	Desktop
Data Transfer Rate	800 MHz
Memory Form Factor	DIMM
Additional Features	Lightweight
Computer Memory Size	4 GB
Warranty Description	Lifetime
RAM Memory Technology	DDR2
Global Trade Identification Number	00751492421933

Ready to buy?

Memory Master 4 GB (2 x 2GB) DDR2 800 MHz PC2-6400 Desktop DIMM Memory Modules MMD4096KD2-800 is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.