diff --git a/infra/tofu/terraform.tfvars.example b/infra/tofu/terraform.tfvars.example
index 94ddc4d..9f7c439 100644
--- a/infra/tofu/terraform.tfvars.example
+++ b/infra/tofu/terraform.tfvars.example
@@ -36,7 +36,7 @@ ssh_authorized_key = "ssh-ed25519 AAAA...replace-with-your-public-key... user@ho
 
 # --- per-node sizing ---
 # vcpu          = 6
-# memory_mib    = 16384
+# memory_mib    = 24576
 # os_disk_gib   = 40
 # data_disk_gib = 100
 # cpu_type      = "host"
diff --git a/infra/tofu/variables.tf b/infra/tofu/variables.tf
index 77d7452..471e0a5 100644
--- a/infra/tofu/variables.tf
+++ b/infra/tofu/variables.tf
@@ -83,9 +83,9 @@ variable "vcpu" {
 }
 
 variable "memory_mib" {
-  description = "RAM per node in MiB (16 GiB)."
+  description = "RAM per node in MiB (24 GiB)."
   type        = number
-  default     = 16384
+  default     = 24576
 }
 
 variable "os_disk_gib" {