Question DDR3L 8GB 1600MHZ won't boot the laptop.

Apr 9, 2019
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#Case 1
DDR3L 8GB 1600MHZ in slot A
DDR3 4GB 1333MHZ in slot B
Runs fine.

#Case 2
DDR3L 8GB 1600MHZ in slot B
DDR3 4GB 1333MHZ in slot A
Doesn't boot.

#Case 3
DDR3 4GB 1333MHZ in slot A
Runs fine.

#Case 4
DDR3 4GB 1333MHZ in slot B
Runs fine.

#Case 5
DDR3L 8GB 1600MHZ in slot A
Doesn't boot.

#Case 6
DDR3L 8GB 1600MHZ in slot B
Doesn't boot.

I wanna be at either Case #5 or #6.
Don't have no clue why it's behaving this way.
Did my testing. Thanks for reading!
 
It's a laptop. C655-S5212 Toshiba.

I don't know the motherboard. Standard DDR3 Boards should be able to support DDR3L as "DDR3L modules are backwards compatible with DDR3 by design." was showed to me by google. But, I'm a novice when it comes to these.

To make my Original Post clear, I'm not looking/hoping towards the ram to run at 1.35V. It can behave like a standard DDR3 ram. I am looking towards getting that extra ram clock.
p.s: the laptop guide say's the max supported clock is 1600MHz.

Thanks for reading! Thanks for responding!
 
Thanks for the input!
Was just curious to run it at higher clocks.

My current setup:
"#Case 1
DDR3L 8GB 1600MHZ in slot A
DDR3 4GB 1333MHZ in slot B
Runs fine."

It looks like the 8 gig stick is totally fine. Not gonna swap that.