HP EliteBook 840 G8 RAM & SSD Upgrade Guide (Pakistan)
The HP EliteBook 840 G8 (11th-gen Tiger Lake) is a genuinely strong upgrade candidate — HP's own QuickSpecs rate it for a full 64GB of DDR4-3200 across two SO-DIMM slots, and its single M.2 2280 slot runs at PCIe Gen4 speeds, one of the faster interfaces available on a 2021-era business laptop. If you found one cheap secondhand with the base 8GB/256GB configuration, both upgrades are worth doing.
This guide covers the exact compatible module specs, what RAM and SSD upgrades cost in Pakistan right now (both have risen in the 2026 memory/NAND shortage), and the physical install steps. We're N.N Laptops, Hafeez Center, Lahore — we stock DDR4 SO-DIMMs and Gen4 NVMe drives and can install either while you wait.
Max RAM
64GB DDR4-3200 (2× 32GB SO-DIMM, dual-channel — official HP maximum)
Max storage
Up to 2TB M.2 2280 PCIe Gen4 NVMe SSD (single slot)
Compatible RAM
DDR4-3200 SO-DIMM, 260-pin, 1.2V
Compatible SSD
M.2 2280 PCIe Gen4 NVMe (Gen3 drives also work, at their native lower speed)
Upgrade cost in Pakistan
- ram
- DDR4 SO-DIMM: 8GB ~Rs 14,000-16,000 · 16GB ~Rs 18,000-32,000 · 32GB single module ~Rs 34,299 (2026 DRAM-shortage pricing — up sharply from 2025 levels; confirm today's price on WhatsApp before ordering).
- ssd
- NVMe M.2 1TB: ~Rs 37,000-56,000 (Gen3 cheaper end, Gen4 higher-speed end) · 2.5" SATA 1TB: ~Rs 25,000-33,000 — both up due to the parallel 2026 NAND shortage.
Step-by-step procedure
- 1
Check current RAM configuration in Task Manager
Performance → Memory → 'Slots used' tells you whether you have a free slot or need to replace an existing stick to reach your target capacity.
- 2
Buy matched DDR4-3200 SO-DIMMs
For the full 64GB, you need two 32GB modules; for a more budget-friendly 16GB or 32GB total, one or two smaller sticks work. WhatsApp 0314 4000131 for today's price on each capacity.
- 3
Power off, unplug, and ground yourself
Shut down fully, disconnect the charger, and touch an unpainted metal surface before opening the base to avoid static damage.
- 4
Remove the base panel via the Torx screws
The 840 G8's base uses captive Torx T5 screws; undo them all (they stay attached to the panel) and lift the cover off from the rear edge.
HP business laptops sometimes have one recessed screw under a warranty sticker — check the full perimeter before prying. - 5
Install the RAM and/or NVMe SSD
Seat each SO-DIMM at 45° and press flat until the clips click. For the SSD, insert the M.2 drive at a slight angle into the Gen4 slot, press flat, and secure the retention screw.
- 6
Reassemble and boot
Replace the base panel, reconnect power, and boot. If you replaced the boot drive, you'll need to reinstall Windows or restore from a clone/backup first.
- 7
Verify in Windows
Settings → System → About for RAM total, Disk Management for SSD capacity. Reseat anything that reports lower than expected.
FAQ
What's the real maximum RAM on the EliteBook 840 G8?
64GB DDR4-3200, using two 32GB SO-DIMMs in the two available slots — this is HP's official documented maximum for the platform, not an unofficial workaround.
Does the 840 G8 support fast NVMe SSDs?
Yes — the single M.2 2280 slot runs at PCIe Gen4, so a Gen4-rated NVMe drive will hit its full rated speed, noticeably faster than the Gen3 slot on the earlier G6/G7 EliteBooks.
How much does a 64GB RAM upgrade cost in Pakistan right now?
Two 32GB DDR4 SO-DIMMs will run considerably more than the 16GB price point quoted elsewhere on this site, since 32GB single modules sit above the shortage-inflated 16GB tier. WhatsApp 0314 4000131 for a confirmed two-stick quote.
Can I just add one stick instead of replacing both?
Yes, if you have a free slot — check via Task Manager first. Adding a single stick still improves total capacity, though a matched dual-channel pair performs better than mismatched sticks.
Can NN Laptops supply and fit the RAM/SSD?
Yes — bring your 840 G8 to Shop 66A, 3rd Floor, Hafeez Center, Gulberg III, Lahore. We'll confirm your current config, source matched DDR4-3200 or Gen4 NVMe, and install while you wait. WhatsApp 0314 4000131 to check stock first.