U2
Samsung K4F6E304HB-MGCH
RAM
FBGA-200
System memory
About this component
Two 2 GB DRAM packages sit next to the SoC and give 4 GB shared between CPU and GPU. The vendor varies between production runs on Erista boards, while Mariko boards switched to lower-voltage LPDDR4X parts, so a replacement must match both the board revision and ideally the original vendor. RAM faults typically show as boot failures or crashes once the SoC has been reworked nearby. Part variants: Two 2 GB chips per board. Erista: Samsung K4F6E304HB-MGCH, SK hynix H9HCNNNBPUMLHR-NLE or Micron MT53B512M32D2NP-062-WTC (LPDDR4). Mariko: Samsung K4U6E3S4AM-MGCJ (LPDDR4X).
What it does on this board
4GB LPDDR4 shared between CPU and GPU.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.