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Posted by Adröit
 - August 10, 2020, 17:54:07
Quote from: 10basetom on August 04, 2020, 06:00:29
If an AMD laptop supports 4266 MHz LPDDR4X, where can one actually buy one to upgrade their RAM?

LPDDR RAM is not upgradeable. It is soldered to the motherboard, be it on laptops, smartphones or tablets.
Posted by 10basetom
 - August 04, 2020, 06:00:29
If an AMD laptop supports 4266 MHz LPDDR4X, where can one actually buy one to upgrade their RAM?
Posted by JayN
 - July 13, 2020, 00:39:29
MCLK= memory clock, UCLK= memory controller clock, FCLK=Fabric clock

According to the twitter discussion,  if the CPU is in high power state,  AMD sets FCLK:UCLK:MCLK ratio to 1:1:1, all at 1333MHz, so all are synchronized for best transfer rate.

If GPU is in high power state, they raise MCLK to 2133MHz , but dial back UCLK and FCLK to allocate more power to GPU.  In particular UCLK to 1067MHz.

So ... looks like working around thermal issues with whatever levers they have.
Posted by AaR
 - July 11, 2020, 08:38:28
Intel CPUs have had dynamic frequency scaling for years now. Called SAGV. So I don't think you statement is true.
Posted by wow&wow
 - July 11, 2020, 02:08:55
Users only need to care and compare the use results, otherwise smart designs will be discouraged.

One smart design is Intel's using partial addresses, faster and less silicon, and nobody cares, even so-called reviewers and techies :-)
Posted by john10072020
 - July 10, 2020, 21:46:50
Userbench? You should ban that benchmark/site even if it does, sometimes, post interesting results.

UserBench...... If AMD then final_score = score*0.75
Posted by Agfsfhxzafhx
 - July 10, 2020, 17:26:23
 We'll see when reviews come
Posted by JayN
 - July 10, 2020, 16:53:53
Well, perhaps the lowered ddr clocks  are necessary due to the raised GPU clock in Renoir.

I noticed some reviews of Renoir where dimming the screen was considered an acceptable optimization.   
Posted by Redaktion
 - July 10, 2020, 16:31:20
Because of the inherent design limitations of the AMD Ryzen 4000U APUs, some benchmarks will favor the Intel Tiger Lake-U CPUs, but these results may not always reflect real-world usage scenarios.

https://www.notebookcheck.net/Here-is-why-LPDDR4x-4266-RAM-seems-considerably-faster-when-coupled-with-Intel-Tiger-Lake-U-CPUs-compared-to-equivalent-AMD-Renoir-APUs.480844.0.html