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- Re: RAM and Thunderbolt

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05-16-2026 12:00 PM - edited 05-16-2026 12:06 PM
Hi,
I have a HP Envy 15 ep 1085tx laptop.
Serial no. - 5CD151NFRL
Does my laptop have thunderbolt 3 ? and what is the maximum RAM I can upgrade to?
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05-16-2026 12:31 PM
Hi:
According to the product specs I could find, the model series has a Thunderbolt 4 port and supports up to 2 x 16 GB of memory.
HP only has the service manual for the older 15-ep0xxx model series available, and the only major difference is the processor generation, the memory speed which is 3200 MHz on your PC and 2933 MHz on the 15-ep0xxx, and the thunderbolt port is a 3 and not a 4.
05-16-2026 12:03 PM
Hi:
That is a good question, and if you want an answer, please provide the full model number or product number of your notebook.
Find Your HP Laptop Name, Product Number, or Serial Number | HP Notebooks | HP Support
05-16-2026 12:31 PM
Hi:
According to the product specs I could find, the model series has a Thunderbolt 4 port and supports up to 2 x 16 GB of memory.
HP only has the service manual for the older 15-ep0xxx model series available, and the only major difference is the processor generation, the memory speed which is 3200 MHz on your PC and 2933 MHz on the 15-ep0xxx, and the thunderbolt port is a 3 and not a 4.