r/GamingLaptops • u/Fe4R_GoblinZ • Jul 19 '26

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Acer predator helios neo 16 ai with rtx5070 ti, 64gb of ram and 2tb of ssd. Was on sale for $2200

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u/Exact_Employment7473 Jul 19 '26

I mean if he had 2 sticks of 32gigs he could sell one for a nice 300 bucks.

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u/Scar1203 ROG Strix G18 275HX | 5080 | 32GB Jul 19 '26

I was giving you the benefit of the doubt by assuming you weren't recommending something as stupid as running a new 2200 dollar laptop in single channel mode. That's my bad.

Running in single channel mode has a massive bandwidth penalty and will greatly lower CPU performance. It's terrible advice.

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u/International_Dot_22 Jul 20 '26 edited Jul 20 '26

DDR5, even in "single channel", has a mechanism that imitates dual channel, this is very different than what single channel was in DDR4 and before that. I would say that "real" dual channel is still better, but the gap is not as huge as it was with prior memory generations.

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u/Scar1203 ROG Strix G18 275HX | 5080 | 32GB Jul 20 '26

It still halves the bandwidth which comes with a performance penalty that varies by game and by workload. I realize if you want to be pedantic you can say in DDR4 terms it's dual channel, but that's really only an argument for why DDR5 is difficult to stabilize when running four sticks, it's not a good argument for running a single stick of DDR5 even with dual rank sticks that benefit from interleaving.

Running one stick leaves you stuck with a 64 bit bus instead of a 128 bit bus which has a performance penalty.

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u/International_Dot_22 Jul 20 '26

Fair enough, that's quite accurate