diff --git a/Memory-model.md b/Memory-model.md
index 02ae6a8..4cc8ef9 100644
--- a/Memory-model.md
+++ b/Memory-model.md
@@ -94,4 +94,12 @@ Memory is released in `DynamicJsonBuffer`'s destructor, so you don't have to do
 |-------------------------|-------------|
 | JsonVariant             | 16          |
 | JsonArray of N element  | 12 + 24 * N |
-| JsonObject of N element | 12 + 32 * N |
\ No newline at end of file
+| JsonObject of N element | 12 + 32 * N |
+
+#### Object size on x64 (tested on Visual Studio 2015)
+
+| Type                    | Size        |
+|-------------------------|-------------|
+| JsonVariant             | 16          |
+| JsonArray of N element  | 24 + 24 * N |
+| JsonObject of N element | 24 + 32 * N |
\ No newline at end of file