Patriot Signature Line 4GB 2666MHz DDR4 Desktop Memory

A small, cheap DDR4 module for topping up an office PC or filling an empty slot.

Quick Specs

• 4GB single DDR4 UDIMM module
• 2666MHz, a JEDEC standard DDR4 speed
• 288-pin DDR4 DIMM form factor
• 1.2V nominal DDR4 operating voltage
• Bare PCB, no heat spreader, no RGB

The low-cost top-up module

There is a real place for a small DDR4 stick, and it is not a gaming rig. Business desktops and mini-PCs often ship with a single 4GB module and one empty slot; adding a matching stick doubles capacity and, more importantly, puts the system into dual channel, which materially helps machines relying on integrated graphics. It is also the obvious replacement when a 4GB module in a fleet machine fails and the whole configuration has to stay consistent. At 2666MHz it runs at a JEDEC standard speed, so it boots at its rated frequency with nothing to enable in BIOS.

Where this is the wrong purchase

Four gigabytes is not enough for modern gaming — it is not close. Sixteen gigabytes is the practical floor for current titles, and 32GB is the sensible target for a build you intend to keep. If you are shopping for a gaming PC, skip this entirely and buy a matched 2x8GB or 2x16GB kit. This module also runs in single channel on its own, so if it is going into an empty second slot alongside a mismatched stick, expect the system to run at the slower module's timings and capacity pairing rules. DDR4 is not interchangeable with DDR5 — the notch position differs and the module will not seat in a DDR5 board. Check your motherboard's QVL and, if pairing, match the existing module's speed and rank where you can.

FEATURES:

• Runs at its rated 2666MHz JEDEC speed with no BIOS profile required
• Ideal for enabling dual channel on a prebuilt with one populated slot
• Low 1.2V nominal operating voltage keeps heat and power draw down
• Bare low-profile PCB fits slim office chassis and clears large coolers
• 100% tested Patriot module backed by a Limited Lifetime warranty

SPECIFICATIONS:

• Model: PSD44G266681
• Capacity: 4GB
• Kit configuration: Single module
• Memory type: DDR4 UDIMM
• Speed: 2666MHz (JEDEC standard)
• CAS latency: Not specified by the manufacturer for this SKU
• Voltage: 1.2V nominal
• Form factor: 288-pin DIMM (desktop)
• Heat spreader: None — bare PCB
• RGB: None
• XMP/EXPO support: Not required at 2666MHz; runs at JEDEC speed by default
• Warranty: Limited Lifetime Warranty

WHAT'S IN THE BOX:

• 1x Patriot Signature Line 4GB DDR4 2666MHz memory module
• Anti-static packaging

Why Patriot?

Patriot's Signature Line covers the unglamorous end of the memory market properly, with consistent JEDEC-spec modules that behave predictably in prebuilt and business hardware. Every Patriot module from AZonline is genuine stock carrying a Limited Lifetime warranty.