The HP EliteDesk 800 G6 (2020-2021) represents the most powerful iteration of HP’s business-class small-form-factor desktop line, featuring 10th generation Intel processors, DDR4-2933 memory support, and up to 128GB maximum RAM capacity.
This guide covers complete RAM upgrade specifications, SSD compatibility, and power supply requirements for the EliteDesk 800 G6 across both SFF and Tower models.
HP EliteDesk 800 G6 Specifications
| Specification | Detail |
|---|---|
| Release Year | 2020-2021 |
| Processor | Intel 10th Gen (Comet Lake) — Core i3, i5, i7, Pentium |
| RAM Type | DDR4 UDIMM (standard, non-ECC) |
| RAM Speed | DDR4-2933 (native); DDR4-3200 tolerated (runs at 2933) |
| Maximum RAM | 128GB (4 × 32GB) |
| DIMM Slots | 4 (tower and SFF) |
| Slot Voltage | 1.2V standard |
| Storage Slots | 1× M.2 NVMe (Key M) + 1× M.2 SATA (Key B) on most boards |
| Form Factors | SFF (Small Form Factor), Tower (Full ATX) |
| PSU (Tower) | 240W, 320W, or 400W depending on config |
RAM Upgrade Guide
Memory Type & Speed
The EliteDesk 800 G6 requires DDR4 UDIMM modules at DDR4-2933 native speed. The motherboard features a 10th Gen Intel LGA1200 socket, which natively supports DDR4-2933 without overclocking.
Compatibility notes:
- Use standard voltage (1.2V) modules only — no low-voltage DDR4-2400 or DDR4-2666 variants
- Faster RAM (DDR4-3200, DDR4-3600) will be automatically throttled to DDR4-2933 and operate stably
- Do not use ECC (Error Correcting Code) RDIMM or LRDIMM modules — these are server-only
- Avoid mixing module speeds; use matching sets of four identical modules for best performance
Maximum Capacity & Configuration
The EliteDesk 800 G6 supports up to 128GB of RAM using four 32GB DDR4 modules. This is a significant increase over the G5’s 64GB maximum.
| Configuration | Capacity | Module Type | Cost Efficiency |
|---|---|---|---|
| Single 16GB module | 16GB | 1× DDR4-2933 16GB | Entry-level upgrade |
| Pair (2×16GB) | 32GB | 2× DDR4-2933 16GB | Dual-channel, good performance |
| Quad (4×16GB) | 64GB | 4× DDR4-2933 16GB | Full quad-channel, max performance |
| Quad (4×32GB) | 128GB | 4× DDR4-2933 32GB | Professional/VM workloads |
Recommended RAM Modules for G6
Kingston Fury Beast DDR4-2933 16GB — Excellent value, widely compatible, lifetime warranty.
Corsair Vengeance LPX DDR4-3200 16GB — Premium performance, will run at DDR4-2933 on G6, stable and reliable.
G.Skill Trident Z DDR4-2933 16GB — High-performance, native G6 speed, excellent for professional work.
Storage Upgrades — SSD Compatibility
M.2 NVMe Support
The EliteDesk 800 G6 supports modern M.2 NVMe SSDs (PCIe 3.0), offering read/write speeds of 3,500+ MB/s. Most G6 configurations include one M.2 NVMe slot (Key M).
Recommended NVMe SSDs:
Samsung 980 Pro 1TB — PCIe 4.0 (backward compatible), fastest consumer NVMe available.
WD Blue SN570 1TB — Reliable PCIe 3.0, excellent value, proven in thousands of systems.
Crucial P5 1TB — Balanced performance and cost, solid warranty support.
M.2 SATA Slot (Legacy Support)
Some G6 boards also feature an M.2 SATA slot (Key B), allowing older SATA-based M.2 drives. However, SATA SSDs are slower (550 MB/s max) compared to NVMe. If possible, upgrade to NVMe for significantly better performance.
2.5″ SATA SSD (Legacy)
The G6 may support 2.5″ SATA bays depending on your specific chassis configuration. These are slower than NVMe but offer good capacity options.
Power Supply — Replacement & Upgrade Specs
Tower Model Power Requirements
EliteDesk 800 G6 tower systems typically come with:
- 240W PSU — For i3/i5 configurations with moderate TDP
- 320W PSU — Standard for i7 configurations
- 400W PSU — For high-performance i9 or multi-GPU setups
All tower models use standard ATX 24-pin power connectors, making replacement straightforward with any desktop-class power supply. Replacement PSUs from brands like Seasonic, EVGA, and Corsair will fit without issue.
SFF Model Power Supply
SFF (Small Form Factor) EliteDesk 800 G6 units typically use 180-240W proprietary PSUs. SFF power supplies are not interchangeable with tower units due to size and connector differences. Check your service manual before ordering replacements.
Recommended Replacement PSUs (Tower)
Seasonic Focus GX-550W 80+ Gold — Excellent efficiency, quiet operation, 12-year warranty.
EVGA SuperNOVA G6 650W — Reliable, 80+ Gold certified, compact design.
Corsair RM750e 750W — High capacity for future-proofing, modular cables reduce clutter.
Frequently Asked Questions
Q: Can I mix different DDR4 speeds in the same system?
A: It’s not recommended. Mixing DDR4-2666 and DDR4-2933 modules can cause stability issues or force the system to run all RAM at the lowest speed (2666 MHz). Install four identical modules for best performance and stability.
Q: Will DDR4-3200 RAM work in my EliteDesk 800 G6?
A: Yes, DDR4-3200 is backward compatible. The G6 motherboard will automatically detect and throttle it to DDR4-2933 native speed. You won’t lose any performance, and your RAM investment is forward-compatible with newer systems that support higher speeds.
Q: How do I install 128GB of RAM in my G6?
A: Open the side panel, locate all four DIMM slots, and insert four 32GB DDR4 modules until the retention clips snap. Power off the system, remove power, and allow 30 seconds for residual charge to dissipate before installation.
Q: Are there any BIOS settings I should change after upgrading RAM?
A: Modern BIOS automatically detects and configures new RAM modules. Boot the system after installation — the BIOS will auto-detect the new capacity. You may see a one-time boot delay as the system trains the memory controller; this is normal.
Q: What’s the difference between buying 32GB as four 8GB modules vs. two 16GB modules?
A: Both configurations give you 32GB. However, four 8GB modules fill all DIMM slots and run in quad-channel mode (slightly faster). Two 16GB modules use only two slots and run in dual-channel mode. For the G6’s workloads, the performance difference is negligible; two 16GB modules give you room for future expansion to 64GB or 96GB.
Q: My EliteDesk 800 G6 has a 240W PSU. Can I upgrade to 400W?
A: Yes, absolutely. Tower models use standard ATX power connectors, so upgrading from 240W to 400W is plug-and-play. A higher-wattage PSU is never a problem; it provides better headroom for efficiency and longevity. Only ensure you buy from tower PSUs, not SFF units.
Recommended Products
| Product | Type | Link |
|---|---|---|
| Kingston Fury Beast DDR4-2933 16GB (×4) | RAM | Shop |
| Corsair Vengeance LPX DDR4-3200 16GB (×4) | RAM | Shop |
| G.Skill Trident Z DDR4-2933 32GB (×2) | RAM | Shop |
| Samsung 980 Pro 1TB NVMe | SSD | Shop |
| WD Blue SN570 1TB NVMe | SSD | Shop |
| Crucial P5 1TB NVMe | SSD | Shop |
| Seasonic Focus GX-650W 80+ Gold | PSU | Shop |
| EVGA SuperNOVA G6 650W | PSU | Shop |
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Related Guides
- HP EliteDesk 800 All Generations Guide
- HP EliteDesk 800 G5 Upgrade Guide
- Laptop RAM Compatibility Guide 2026
- SSD Compatibility Guide 2026