HP ProBook Memory: 400, 600 & 4 Series Laptops

Memory upgrades matched to your HP ProBook laptop. Each listing covers one ProBook model, with the speed, module sizes and kit sizes HP specifies for it. To find yours, type the model into the search bar at the top of the page, for example ProBook 450 G8, ProBook 440 G10, ProBook 640 G5 or ProBook 4 G1i. For help identifying your model, see the HP business memory guide.

Find memory by ProBook series

• ProBook 4 series: 4 G2i Next Gen AI, 4 G2i AI, 4 G2a, 4 G1i, 4 G1a and 4 Flip G2i. DDR5-5600 SODIMM.
• ProBook 400 (14, 15.6 and 16 inch): 440 G11, 440 G10, 450 G10, 450 G9, 450 G8, 450 G7, 450 G6, 450 G5 and the other 430, 440, 445, 455 and 470 models. SODIMM, non-ECC.
• ProBook 600 (13, 14 and 15.6 inch): 640 G8, 650 G8, 630 G8, 635 Aero G8, 650 G5, 640 G5 and the earlier 600 models. SODIMM, non-ECC.

Check your generation

ProBook 400 and 600 models use DDR4 through the G10 generation, and the G11 models and the ProBook 4 series use DDR5. DDR4 and DDR5 modules are not interchangeable. HP's service guide sets the maximum for each model, from 16GB on the older G2 and G4 models to 64GB on the 600 G8 and ProBook 4 G2a. Install identical modules in pairs for dual-channel operation; the processor sets the speed the memory runs at.

Buying for a laptop fleet

NEMIX RAM is a US-based memory specialist, in business since 1993. Every module is researched, matched, and compatibility-tested by NEMIX RAM, is JEDEC-compliant, and is backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available. Request a quote, or send us your HP model and we will confirm the right module before you order.