diff --git a/hw/sl1640.rst b/hw/sl1640.rst
index c42d1e3..83440b9 100644
--- a/hw/sl1640.rst
+++ b/hw/sl1640.rst
@@ -76,8 +76,7 @@ The SL1640-based evaluation system includes the following components:
 
 -  Storage: eMMC 5.1 (16 GB)
 
--  DRAM: DRAM: Up to x32 2GB system memory by 1pcs x32 16 Gbit
-      LPDDR4x-3733
+-  DRAM: Up to x32 4GB system memory by 1pcs x32 16 Gbit LPDDR4x-3733
 
 -  PMIC: two support DVFS in Vcore and Vcpu supply rails
 
diff --git a/release_notes/scarthgap_6.12_v2.0.0.rst b/release_notes/scarthgap_6.12_v2.0.0.rst
index e1a71e3..45c7e64 100644
--- a/release_notes/scarthgap_6.12_v2.0.0.rst
+++ b/release_notes/scarthgap_6.12_v2.0.0.rst
@@ -412,14 +412,10 @@ General Modules, Peripherals, and Interfaces Supported
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4   | 2GB 3733 Mbps                                          |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4x  | 3733 Mbps                                              |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                +--------+----------+--------------------------------------------------------+
 |                                | SL1680 | LPDDR4   | 2GB 3733 Mbps                                          |
diff --git a/release_notes/scarthgap_6.12_v2.1.0.rst b/release_notes/scarthgap_6.12_v2.1.0.rst
index 84dc3cf..d2b17d8 100644
--- a/release_notes/scarthgap_6.12_v2.1.0.rst
+++ b/release_notes/scarthgap_6.12_v2.1.0.rst
@@ -457,14 +457,10 @@ General Modules, Peripherals, and Interfaces Supported
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4   | 2GB 3733 Mbps                                          |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4x  | 3733 Mbps                                              |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                +--------+----------+--------------------------------------------------------+
 |                                | SL1680 | LPDDR4   | 2GB 3733 Mbps                                          |
diff --git a/release_notes/scarthgap_6.12_v2.2.0.rst b/release_notes/scarthgap_6.12_v2.2.0.rst
index a2127f9..563c504 100644
--- a/release_notes/scarthgap_6.12_v2.2.0.rst
+++ b/release_notes/scarthgap_6.12_v2.2.0.rst
@@ -470,8 +470,6 @@ General Modules, Peripherals, and Interfaces Supported
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4   | 2GB 3733 Mbps                                          |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4x  | 3733 Mbps                                              |
diff --git a/release_notes/scarthgap_6.12_v2.2.1.rst b/release_notes/scarthgap_6.12_v2.2.1.rst
index fd40633..7fb8c22 100644
--- a/release_notes/scarthgap_6.12_v2.2.1.rst
+++ b/release_notes/scarthgap_6.12_v2.2.1.rst
@@ -413,14 +413,10 @@ General Modules, Peripherals, and Interfaces Supported
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4   | 2GB 3733 Mbps                                          |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                |        +----------+--------------------------------------------------------+
 |                                |        | LPDDR4x  | 3733 Mbps                                              |
 |                                |        |          +--------------------------------------------------------+
-|                                |        |          | 3GB 3733 Mbps                                          |
-|                                |        |          +--------------------------------------------------------+
 |                                |        |          | 4GB 3733 Mbps                                          |
 |                                +--------+----------+--------------------------------------------------------+
 |                                | SL1680 | LPDDR4   | 2GB 3733 Mbps                                          |
diff --git a/subject/memory_layout_customization.rst b/subject/memory_layout_customization.rst
index ef04873..d1d2626 100644
--- a/subject/memory_layout_customization.rst
+++ b/subject/memory_layout_customization.rst
@@ -63,17 +63,17 @@ SL1640 Memory Layout
 +-------------------+------------------------+----------------------------+
 | Memory Size       | Memory Section         | Size                       |
 +-------------------+------------------------+----------------------------+
-| 2 GB DDR          | NonSecure (CMA)        | 260MB                      |
+| 1 GB DDR          | NonSecure (CMA)        | 236MB                      |
 |                   +------------------------+----------------------------+
-|                   | System                 | 1.948GB                    |
+|                   | System                 | 902MB                      |
 |                   +------------------------+----------------------------+
 |                   | NonSecure (Non-cached) | 8MB                        |
 |                   +------------------------+----------------------------+
 |                   | Secure                 | 16MB                       |
 +-------------------+------------------------+----------------------------+
-| 3 GB DDR          | NonSecure (CMA)        | 500MB                      |
+| 2 GB DDR          | NonSecure (CMA)        | 260MB                      |
 |                   +------------------------+----------------------------+
-|                   | System                 | 2.901GB                    |
+|                   | System                 | 1.948GB                    |
 |                   +------------------------+----------------------------+
 |                   | NonSecure (Non-cached) | 8MB                        |
 |                   +------------------------+----------------------------+