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Introduction

This guide contains a selection of photos and chip identification summary for the main board of Valve's Steam Deck. Check out our Steam Deck Teardown for more info.

Special thanks to community member CChin for his contribution!

This teardown is not a repair guide. To repair your Steam Deck, use our service manual.

  1. Steam Deck Chip ID, Side 1: step 1, image 1 of 2 Steam Deck Chip ID, Side 1: step 1, image 2 of 2
    • IC Identification, Pt. 1:

    • AMD/Valve 100-000000405 Quad-Core Application Processor w/ GPU

    • Micron MT62F1G32D4DR-031 WT:B 4 GB LPDDR5 SDRAM Memory

    • Winbond W25Q128JW 16 MB Serial NOR FLASH Memory

    • Analogix ANX7580 DisplayPort to Single MIPI Receiver

    • Cirrus Logic CS35L41B Audio Amplifier

    • Maxim Integrated MAX77961 USB Type-C Li-Ion Battery Charger

    • O2Micro OZ536 Backlight LED Driver

  2. Steam Deck Chip ID: step 2, image 1 of 1
    • IC Identification, Pt. 2:

    • Monolithic Power Systems MP2845 Digital 6-Phase Controller

    • Monolithic Power Systems MP86902B 35 A Power Stage

    • Monolithic Power Systems MP86903C Power Stage

    • Likely Monolithic Power Systems NB688C Synchronous Buck Converter

    • Monolithic Power Systems NB691 Synchronous Buck Converter

    • Monolithic Power Systems NB690G Synchronous Buck Converter

    • Possibly Monolithic Power Systems NB591 Synchronous Buck Converter

  3. Steam Deck Chip ID, Side 2: step 3, image 1 of 2 Steam Deck Chip ID, Side 2: step 3, image 2 of 2
    • IC Identification:

    • ITE Tech IT5570VG Embedded Controller (likely)

    • O2Micro OZ711 Card Reader Controller

    • Maxim Integrated MAX77958 USB Type-C & USB Power Delivery Controller

    • Monolithic Power Systems NB691 Synchronous Buck Converter

    • Possibly Monolithic Power Systems NB591 Synchronous Buck Converter

    • Diodes Incorporated PI3USB102 USB 2.0 SPDT Analog Switch

    • Texas Instruments TPS22976 Load Switch

16 Comments

Interesting how Valve went with a full-custom APU from AMD. I thought they’d use an off-the-shelf chip like the 4500U.

Ethan Zuo - Reply

Yeah i know what you mean!

They most likely they where wanting it to not be that thick,

so not like a laptop or desktop CPU for it,

Due to it being kinda thick!

BeanMan56 -

I assume the only major difference between this and an off the shelf APU is that this APU just has everything the steam deck does not utilize disabled or removed for power consumption reasons. I doubt it goes much deeper than that.

Alyx -

Good Point

See what you mean

BeanMan56 -

The 4500u has 6 EC Vega GPU, while the Steameck APU has an 8 ECU RDNA 2 GPU. Plus the custom APU gives them more control than a OTS apu.

MJ26 Gaming -

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