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Exam 220-1001 topic 1 question 393 discussion

Actual exam question from CompTIA's 220-1001
Question #: 393
Topic #: 1
[All 220-1001 Questions]

A laptop is being upgraded. The machine currently has 4GB LPDDR3 soldered to the motherboard and one available RAM slot. Which of the following chips should be selected to upgrade the laptop?

  • A. 2GB LPDDR3 SoDIMM
  • B. 4GB LPDDR3 DIMM
  • C. 8GB DDR4 SoDIMM
  • D. 8GB LPDDR3 DIMM
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by mrgoat at Oct. 6, 2021, 3:54 a.m.

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iLikeBeagButt
3 years, 3 months ago
Selected Answer: A
A. 2GB LPDDR3 SoDIMM
upvoted 1 times
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MomoLomo
3 years, 8 months ago
A is correct for 2 reasons 1- we should use DDR3 2- DIMM is for servers SOdimm for laptops
upvoted 1 times
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lance12
3 years, 9 months ago
I think it's "A" because 1) SoDIMM - DIMM for laptops 2) DDR3 3) Theoretically you can use same size and speed for DUAL channel but in this scenario you are given i think DUAL channel is hard to achieve. Check out this source: https://serverfault.com/questions/912283/can-mixing-ram-memory-size-on-its-own-reduce-dual-channel-performance/912298 Tells you how FLEX works, FLEX is the concept of what happens if you do RAMs with different Sizes like 8+16
upvoted 1 times
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Gladiators
3 years, 9 months ago
ans is A as current is DDR3 SODIMM. therefore, need a DDR3 SODIMM too which based on the option, it left with A. We cant fit DDR4 into DDR3.
upvoted 1 times
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[Removed]
3 years, 9 months ago
Shouldnt you use RAM of the same size? I would go for B
upvoted 1 times
hatsukoii
3 years, 8 months ago
B is a DIMM not a SoDIMM.
upvoted 1 times
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mrgoat
3 years, 10 months ago
How is it A, when that's less GB? . 8GB DDR4 SoDIMM Should be the answer.. Anyone else can verify
upvoted 1 times
[Removed]
3 years, 9 months ago
No it's A, DDR3 slots cannot hold DDR4 rams.
upvoted 3 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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