F5F Stay Refreshed Hardware Desktop L1Tech's video covers running four memory slots on AM5 and provides additional details about DDR5 technology.

L1Tech's video covers running four memory slots on AM5 and provides additional details about DDR5 technology.

L1Tech's video covers running four memory slots on AM5 and provides additional details about DDR5 technology.

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_spoot_
Member
66
09-24-2021, 08:13 PM
#1
The DDR5 in the 2 DIMM setup operates with much tighter timings.
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_spoot_
09-24-2021, 08:13 PM #1

The DDR5 in the 2 DIMM setup operates with much tighter timings.

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Trixie3474
Junior Member
46
09-24-2021, 08:24 PM
#2
Based on the screenshot... 4x DIMMs DRAM:FSB ratio equals 19:1 for DDR5-3800 CL 40-40-40-77-1T timings. 2x DIMMs DRAM:FSB ratio is 56:3 from the same data. Comparing these... 56:3 converts to 3733 CL with 30-38-38--96-1T timings. Clearly, the timings vary significantly.
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Trixie3474
09-24-2021, 08:24 PM #2

Based on the screenshot... 4x DIMMs DRAM:FSB ratio equals 19:1 for DDR5-3800 CL 40-40-40-77-1T timings. 2x DIMMs DRAM:FSB ratio is 56:3 from the same data. Comparing these... 56:3 converts to 3733 CL with 30-38-38--96-1T timings. Clearly, the timings vary significantly.

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ChadlyG
Member
171
09-25-2021, 04:52 AM
#3
He mentions DDR5-6000 speed. The issue with four modules is achieving those rates—AM5 and the 13th gen aren’t capable of it. The speeds he provided were what worked stably with 32GB sticks. A 16GB setup would be preferable, though not much more so. I don’t believe any boards support EXPO QVL for four modules.
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ChadlyG
09-25-2021, 04:52 AM #3

He mentions DDR5-6000 speed. The issue with four modules is achieving those rates—AM5 and the 13th gen aren’t capable of it. The speeds he provided were what worked stably with 32GB sticks. A 16GB setup would be preferable, though not much more so. I don’t believe any boards support EXPO QVL for four modules.