[SOLVED] The relation between laptop's dedicated video card and memory module frequency. Will I lose performance?

Doni Dozh

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May 11, 2017
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I recently bought a Ryzen 5 3500U 8GB Aspire 3 A315-42G-R5Z7 for music production (just playing tracks and loops in Ableton, and some very light VST instruments, in case you wanna know).
But, this laptop comes with a dedicated video card that uses 2GB of total system memory, so I bought another 8GB 2400mhz HyperX module (since the manufacturer website said it could go 2400mhz max frequency and had a spare slot). By my counts, I would have 14 GB in total.
An then came the issue: when I opened the laptop case I saw 2x4GB 2666mhz modules and no spare slot! :homer:
A lot of questions ran through my mind like "why did they put 2666mhz modules if the max frequency is 2400..?"
But then I thought it could be some "spare frequency" for the GPU. Can someone confirm this? :unsure:

And if it is true, will I lose too much performance going with another 8GB 2400mhz module?
I though about giving it back and buying 2x8GB 2666mhz instead, but it will be way more expensive than just buying just one more 2400 module (where I live)

What you guys say? The more expensive 2x8 2666mhz or just another 2400mhz module?
BTW, it's a Ryzen 5 3500U processor.

TL;DR: I got a Ryzen 5 laptop with 2x4GB 2666mhz modules, no spare slot, and bought a 8GB 2400 module. Will I lose too much perfomance if I buy another 2400 module (cheaper) or should i go with 2x8GB 2666 modules (more expensive) instead?
 

tennis2

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So it's running at 1866MHz....? That's.... unfortunate.

AMDs website says the 3500U does DDR4-2400, so that's all I'd expect to get from a laptop.

Since the machine already has 2666 capable sticks, I suppose the best course of action is to poke around in the BIOS and see if/ what you can get out of RAM settings. That then will answer your own original question.
 

tennis2

Distinguished
So it's running at 1866MHz....? That's.... unfortunate.

AMDs website says the 3500U does DDR4-2400, so that's all I'd expect to get from a laptop.

Since the machine already has 2666 capable sticks, I suppose the best course of action is to poke around in the BIOS and see if/ what you can get out of RAM settings. That then will answer your own original question.
 

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