4GB 2x 2GB 343057-B21 HP Proliant DL360 G4p DL380 G4 Single Rank ECC Memory RAM

Bottom line: The 4GB 2x 2GB 343057-B21 HP Proliant DL360 G4p DL380 G4 Single Rank ECC is a specs-and-price decision rather than a crowd-consensus one in the lan-party gear category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-09-25

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 →

Before you buy

Check the listed dimensions, connectors and platform compatibility against your setup before ordering
Used and vintage listings vary by seller and condition — check the listing photos, description and return terms before buying

Manufacturer description

Proliant DL360 G4p, DL380 G4. Proliant ML350 G4p (DDR2) ML370 G4, ML570 G3, ML570 G4. Proliant DL580 G3, DL580 G4. Proliant DL140 G2. Third Party Equivalent to HP Part Numbers: 343057-B21.

SpecPicks Verdict

SpecPicks scored 4GB 2x 2GB 343057-B21 HP Proliant DL360 G4p DL380 G4 Single Rank ECC… using a rating × review-volume × price-fit model applied to published specs and reviews across the lan-party gear category. HP's lan-party gear 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 lan-party gear 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.

Full Specifications

rank	Single Rank
capacity_gb	2
memory_type	DDR2 ECC

Ready to buy?

4GB 2x 2GB 343057-B21 HP Proliant DL360 G4p DL380 G4 Single Rank ECC Memory RAM 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. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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