Desktop PC upgrade guide - RAM and SSD compatibility

HP EliteDesk 800 G9 Compatibility (2026) — RAM, SSD & Storage Upgrade Guide

The EliteDesk 800 G9 is a premium business desktop featuring Intel Core i5/i7/i9 12th Gen (Alder Lake), DDR5-4800 UDIMM memory, and flexible storage options. This guide covers RAM, SSD, and storage compatibility for all configurations.


EliteDesk 800 G9 System Specifications

SpecificationDetail
ProcessorIntel Core i5/i7/i9 12th Gen (Alder Lake)
ChipsetIntel Q670
RAM TypeDDR5-4800 UDIMM
RAM Slots2 DIMM slots
Max RAM64 GB (2x 32GB)
StorageM.2 NVMe + SATA
Form FactorTower / Small Form Factor / Desktop Mini
Release Year2022

RAM Compatibility & Upgrades

Memory Specifications

ParameterValue
TypeDDR5-4800 UDIMM
Voltage1.1V
Max Capacity64 GB (2x 32GB)

Recommended RAM Upgrades

CurrentUpgrade ToModulesPriceAmazon Link
8 GB16 GB1x 8GB DDR5-4800£25-40View
16 GB32 GB2x 8GB DDR5-4800 kit£45-75View
32 GB64 GB2x 32GB DDR5-4800£120-200View

Storage Compatibility

M.2 NVMe Storage

EliteDesk 800 G9 supports 1 M.2 NVMe slot for fast primary storage.

SpecificationDetail
InterfaceNVMe PCIe 4.0
Supported Sizes2230, 2242, 2280
Max Capacity4 TB

Recommended NVMe SSDs

ModelCapacitySpeedAmazon Link
Samsung 970 EVO Plus500GB – 2TB3,500 MB/sView
Crucial P3500GB – 2TB3,500 MB/sView
WD Blue SN580500GB – 2TB4,150 MB/sView

SATA Storage Options

EliteDesk 800 G9 includes SATA drive bays for additional storage. SATA SSDs offer cost-effective secondary storage at up to 550 MB/s.

ModelCapacityAmazon Link
Crucial MX500500GB – 2TBView
Samsung 870 EVO500GB – 4TBView

Upgrade Installation Guide

Before You Start

  • Power off and unplug the system completely
  • Wait 30 seconds before opening the chassis
  • Use an anti-static wristband to prevent ESD damage
  • Note the Tower / Small Form Factor / Desktop Mini form factor dimensions when selecting components

RAM Installation

  1. Open the side panel or chassis cover
  2. Locate the DIMM slots on the motherboard
  3. Press retention clips outward on both ends of the slot
  4. Align the RAM module notch with the slot key
  5. Press down firmly until retention clips snap into place

M.2 NVMe Installation

  1. Locate the M.2 slot on the motherboard
  2. Remove the mounting screw if present
  3. Insert the NVMe drive at a 30-degree angle
  4. Press down and secure with the mounting screw

Frequently Asked Questions

Q: What is the maximum RAM for EliteDesk 800 G9?
A: 64 GB (2x 32GB) using 2 DIMM slots.

Q: Does EliteDesk 800 G9 support NVMe SSDs?
A: Yes, it has 1 M.2 NVMe slot.

Q: Can I mix RAM speeds in EliteDesk 800 G9?
A: Yes, but all modules will run at the slower speed. Match speeds for best performance.

Q: What form factor is the EliteDesk 800 G9?
A: Tower / Small Form Factor / Desktop Mini. Check physical dimensions before purchasing components.


Recommended Upgrade Kits

KitComponentsPriceAmazon Link
Budget RAM8GB DDR5-4800£20-30View
Performance RAM16GB DDR5-4800 Kit£40-60View
NVMe SSD500GB NVMe£35-55View
Bundle16GB DDR5-4800 + 500GB NVMe£70-110View

Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.


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