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Zen4 Max Memory Speed

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Joined: 01 May 2016
Posts: 834
Location: Switzerland
PostPosted: Wed Sep 28, 2022 8:34 am    Post subject: Zen4 Max Memory Speed Reply with quote
Considering to upgrade my computer with the recent Zen4 launch...

In the 7700X page, I see

Quote:
Max Memory Speed
1x1R 5200 MT/s
1x2R 5200 MT/s
2x1R 3600 MT/s
2x2R 3600 MT/s


Can someone clarify this? Does that mean that Ram speeds higher than 3600 are not supported if using 2 sticks, no matter if they are Single or Dual Rank?
So no way to have Dual Channel without a huge speed decrease?
That is weird... It could be understandable if using 4 sticks, but already only with 2? And the slowest Ddr5s are at 4800 I think...

I know that the sticks often work at higher speeds as specified in the Amd/Intel pages, but still... It suggests that I should buy the cheapest Ddr5 if I am using 2 sticks because faster ones would have trouble running at higher speeds...
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Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
PostPosted: Wed Sep 28, 2022 10:24 am    Post subject: Reply with quote
That must be per channel data. You can use dual channel as one stick per channel without any speed penalty.
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Joined: 01 May 2016
Posts: 834
Location: Switzerland
PostPosted: Wed Sep 28, 2022 2:15 pm    Post subject: Reply with quote
That makes more sense this way, thank you.
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