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March 24th, 2023 07:00
SK Hynix memories for Vostro 7620
Hello.
Need help for memory upgrade (from 8 Gb to 16 Gb, in Vostro 7620). I see that there're two SK Hynix memories (16 Gb) that should be compatible with Vostro 7620: HMCG78MEBSA092N and HMCG78AEBSA095N. Are they really compatible? Which one would be the best for this laptop, and why?
Thanks.
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filbert
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March 24th, 2023 09:00
I don't know the differences. I looked at the first one, the one you ordered, and it appears compatible.
You could try the one that you were sent, provided the seller will accept a return and give you a refund if it doesn't work.
If you want to be certain, buy the Crucial RAM that I suggested and linked, as it is guaranteed to work.
filbert
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March 24th, 2023 08:00
Hynix HMCG78MEBSA092N should work.
Also, here are Crucial RAM upgrades that are guaranteed compatible with your 7620.
Whenever touching components or working inside a computer, wear a grounded wrist strap, also called anti-static wrist strap, ESD wrist strap, or ground bracelet. It's a cheap and sensible precaution. Rest the laptop on an anti-static mat or at least a reasonable alternative such as corrugated cardboard.
picolo_piccolo
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March 24th, 2023 09:00
filbert,
Thanks for your answer.
What about the HMCG78AEBSA095N? Let me explain better my "drama". I could have bought a memory from a different brand, but I ended up opting for SK Hynix because my Vostro 7620 came with a memory from this brand (8Gb though, as you know). So, I did purchase the HMCG78MEBSA092N, however, the seller sent me the HMCG78AEBSA095N. I haven't tested it yet, and I haven't decided whether I'll return it or not. It'd depend on its differences to the HMCG78MEBSA092N.
The main difference I could find refers to the PMIC, but I confess I'm not sure what to do with this info.
HMCG78MEBSA092N
Generation: 1st (M)
PMIC Vendor: Renesas(IDT) 5100
PMIC Rev: B0
DRAM Date Code: 2127
HMCG78AEBSA095N
Generation: 2nd (A)
PMIC Vendor: MPS 5100
PMIC Rev: R1
DRAM Date Code: 2224
Again, not sure what they mean in practice.
I also wonder about the clock rate linked to the HMCG78AEBSA095N. There's a site suggesting 2400 Mhz, but my impression is that it should be higher (?). Or perhaps the site is wrong (?). I could not find this info in any other place.
I'd appreciate your help.