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#1 | AMD Only DDR3L SO-DIMM datum

Fri Oct 29, 2021 8:42 am (Last edited: Fri Oct 29, 2021 8:54 am)

skyblaster

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Posts:	3
Registered since:	04.20.2019

After searching if there was such a thing as "AMD Only" RAM and not finding any results, I thought maybe the ad was referring to the fact it was double sided and not physically capable of being installed on an Intel motherboard (as if they're all created equal).
Because I'm a glutton for punishment, I chanced fate and went ahead and bought this: eBay item 144183187516

The label just like in the ad photos shows a part number of MT16KTF1G64HZ-1G6E1 (8GB 2Rx8 PC3L-12800S-11-11-FP).

I tried in my old trusty Acer Aspire AS5750 w/ i7-2630qm and it would not POST with either DIMM. Figuring it may be the SPD timings, I then tried in a Lenovo U510 with i7-3517U and again, no POST.

Luckily I'm able to boot off of another DIMM and read i2c from the new module in the additional DIMM slot.

It's most likely a counterfeit label however since the SPD settings below indicate a 1RX8 configuration.

Interestingly there is also a solder bridge on the back side of the PCB on two pins where another SPD flash IC could go. Could this actually be a 16GB DIMM with half of the dies locked out (ie. binned)?

I tried following a couple sets of instructions which used tools like RWEverything, tb2bin, and Thaiphoon Burner to create an XMP profile, but they were all quite vague on the additional timing values that are not found in the JEDEC SPD settings.

EDIT: Another thing to note is that the entire flash IC appears to be unlocked, so I should in theory be able to write over the SPD data.

Does anyone have any ideas on how to get this booting in an Intel laptop? Unfortunately I don't have an AMD machine to test with.

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Prepared by Thaiphoon Burner Super Blaster
-------------------------------------------------------------
                         MEMORY MODULE
-------------------------------------------------------------
Manufacturer             : Unknown (JEDEC ID: 0908h)
Series                   : Not determined
Part Number              : Undefined
Serial Number            : Undefined
JEDEC DIMM Label         : 8GB 1Rx8 PC3L-12800S-11-11-B2
Architecture             : DDR3 SDRAM SO-DIMM
Speed Grade              : DDR3-1600K
Capacity                 : 8 GB (8 components)
Organization             : 1024M x64 (1 rank)
Register Manufacturer    : N/A
Register Model           : N/A
Manufacturing Date       : May 10-14 / Week 19, 2021
Manufacturing Location   : Unknown: 00h
Revision / Raw Card      : 0000h / B2 (6 layers)
-------------------------------------------------------------
                        DRAM COMPONENTS
-------------------------------------------------------------
Manufacturer             : Micron Technology
Part Number              : MT41K1G8??-125:?
Package                  : Standard Monolithic 78-ball FBGA
Die Density / Count      : 8 Gb  / 1 die
Composition              : 1024Mb x8 (128Mb x8 x 8 banks)
Input Clock Frequency    : 800 MHz (1.250 ns)
Minimum Timing Delays    : 11-11-11-28-39
Read Latencies Supported : 11T, 10T, 9T, 8T, 7T, 6T, 5T
Supply Voltage           : 1.50 V / 1.35 V
XMP Enthusiast           : Not programmed
XMP Extreme              : Not programmed
SPD Revision             : 1.1 / November 2010
XMP Revision             : Undefined
-------------------------------------------------------------
                         SOURCE SPD DUMP
-------------------------------------------------------------
000  92 11 0B 03 05 22 02 01 03 52 01 08 0A 00 FE 00
010  69 78 69 30 69 11 18 81 20 08 3C 3C 00 F0 83 01
020  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
030  00 00 00 00 00 00 00 00 00 00 00 00 0F 11 41 00
040  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
050  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
060  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
070  00 00 00 00 00 89 08 00 21 19 00 00 00 00 AE 70
080  20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
090  20 20 00 00 80 2C 00 00 00 00 00 00 00 00 00 00
0A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0F0  00 00 00 00 00 00 00 00 00 7C 69 23 17 59 5A 54
 
 

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#2 | RE: AMD Only DDR3L SO-DIMM datum

3 minutes ago (Last edited: 2 minutes ago )

According to https://overclockers.ru/lab/show/65403_2...-socket-am3-am3 AMD CPU integrated memory controller supports 11-bit columns and 16K page size.

Full text (Russian)

Zitat
Интегрированный контроллер памяти процессоров AMD поддерживает адресацию с использованием 11-разрядных столбцов и размером страницы 16 Кбит. Стандартные контроллеры памяти, встречающиеся в составе других платформ, используют 10-разрядные столбцы и размер страницы 8 Кбит.

При такой организации доступа к памяти каждая страница размером 16 Кбит может содержать 2048 точек входа. Это позволяет контроллеру памяти процессоров в исполнении Socket AM2 оставаться на одной странице в два раза дольше по сравнению со «стандартным» контроллером памяти.

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