Maximum RAM supported from unknown chipset for Intel socket BGA1168

A client of mine has an Intel laptop with a socket BGA1168 and unknown chipset. CPU-z and Speccy both were not helpful. The CPU is Core i3-5020U. The primary question is how much RAM does this unknown chipset support?

The laptop model is an HP 15-ac142dx (proper letter casing) and the technical specifications do not clarify which chipset is used. Apparently socket BGA1168 supports three chipsets (HM86, HM87 and QM87) though I can't even seem to find information on those chipsets either! This laptop came with a whopping 4GB of RAM and the 8GB stick I installed was recognized by the system however it refused to use it (shows up in Speccy though the system still reports 4GB). I tried installing it individually and both slots. Apparently the U denotes "ultra low power" so I'm guessing the RAM might have to have very low voltage rating or I can only add another 4GB DIMM for her? The 4GB stick is apparently rated 1.35v and the 8GB stick 1.5v however again, since I do not know the chipset I can not confirm that either.

Manufacturer: HP Model 80C1 (U3E1) Version 96.42 Chipset

Vendor: Intel Chipset Model Broadwell-U Chipset Revision 09

Southbridge Vendor: Intel Southbridge Model Broadwell-U PCH L-P

Southbridge Revision: 03
BIOS

    Brand    Insyde

    Version    F.1D

    Date    11/24/2015

Intel's System Support Utility reports the chipset as "Dynamic Platform and Thermal Framework" which is not what the chipset is.

Intel U designated CPUs that use DDR3 require a maximum voltage of 1.35 volts and will not use 1.5 volts or greater.

John

Posted 2018-06-03T11:01:48.453

Reputation: 1 490

Downloads for Intel® Chipset Identification Utility? – DavidPostill – 2018-06-03T11:57:57.390

@DavidPostill I did and, offhand, I think it said that it only supports 64 Bit operating systems...her copy of Windows 10 is 64 bit! I'm open to any other suggestions. – John – 2018-06-03T12:00:25.230

Try Download Intel® System Support Utility for Windows*

– DavidPostill – 2018-06-03T12:07:06.973

@DavidPostill Sure, it'll have to wait until the end of the day though I'll give it a go. Thank you for your suggestion. If I figure it out I'll post the answer here, obviously. – John – 2018-06-03T12:35:38.757

What BIOS says? have you tried to use memtest? Can you say the model of your 8gb stick? – Psychozoic – 2018-06-03T15:13:54.427

What does Device Manager say about the chipset? Are the drivers installed for the chipset? – Moab – 2018-06-03T19:38:58.707

Up-voting for now; it's a client's laptop. Heaven forbid that Intel CPU page would come up in my several searches for the CPU using quote operators! (it didn't) I think I'll send the RAM back in exchange for low voltage RAM. I suspected that an 8GB limit would have been a foolish presumption. I'll mark my calendar and once the RAM comes in and I can confirm it required low voltage / power RAM I'll accept the answer. I just needed an official confirmation of at least either the maximum RAM or the acceptable RAM type(s). Thank you! – John – 2018-06-04T14:35:14.773

The i3-5020u CPU requires DDR3 with a maximum voltage of 1.35 volts. So while the system recognized the 1.5 volt DIMM it refused to use it. I imagine that all **Intel "U" designated CPUs require 1.35 volts for DDR3 at maximum** however the CPU page you linked doesn't specify that go figure. – John – 2018-06-19T02:28:49.113

Maximum RAM supported from unknown chipset for Intel socket BGA1168

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