Acer Nitro VN7-791G-78JJ - RAM Upgrade Guide
The Acer VN7-791G-78JJ laptop has two memory slots available for RAM upgrades. It can support a maximum of 16GB of memory. The type of RAM compatible with this device is DDR3 SDRAM, and it uses a SODIMM form factor, which is common for laptops due to its compact size. For best performance, the RAM should have a clock speed of 1600MHz, also referred to as PC3-12800.
Acer Nitro VN7-791G-78JJ Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Acer Nitro VN7-791G-78JJ |
| Total memory slots | 2 |
| Maximum RAM | 16GB |
| Memory type | DDR3 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 1600MHz (PC3-12800) |
| Voltage | Low - 1.35V (DDR3L / PC3L) |
| Number of pins | 204-pin |
FAQ about Acer Nitro VN7-791G-78JJ RAM
How much RAM can I put in my Acer VN7-791G-78JJ laptop?
Maximum is 16GB total. You've got 2 slots to work with, so that's 8GB per slot max.
What type of memory does the VN7-791G-78JJ use?
It uses DDR3 SODIMM modules - the smaller laptop-sized sticks, not the full-size desktop ones. Make sure you get DDR3, not DDR4 or DDR5.
What speed RAM should I buy for this laptop?
Go with 1600MHz (also labeled as PC3-12800). The system might accept faster speeds but it'll just downclock them to 1600MHz anyway, so no point spending extra.
Can I mix different RAM sizes in the two slots?
Technically yes, like 4GB + 8GB, but for best performance stick with matched pairs - either 2x4GB or 2x8GB. Mismatched sizes can disable dual-channel mode.
Do I need to remove the existing RAM or can I just add more?
Depends what's already installed. Check how many slots are occupied first. If both slots are full with smaller modules, you'll need to replace them. If one slot is empty, you can just add another stick.
Will any DDR3 SODIMM work in this laptop?
As long as it's DDR3 SODIMM at 1600MHz or higher, you should be good. Just avoid the low-voltage DDR3L unless you're sure your current RAM is also DDR3L - mixing regular and low-voltage can cause issues.