diff --git a/scripts/farm/hammer-farm.service b/scripts/farm/hammer-farm.service
index 4ec755ed..edff3121 100644
--- a/scripts/farm/hammer-farm.service
+++ b/scripts/farm/hammer-farm.service
@@ -8,8 +8,9 @@ Type=simple
 WorkingDirectory=/opt/hammer
 Environment=HOME=/root
 Environment=HAMMER_DIR=/opt/hammer
-# JOBS = vCPU (cada build usa 1 core por codegen-units=1). CCX13 = 2.
-Environment=JOBS=2
+# JOBS no se fija: el loop usa nproc por defecto (cada build usa 1 core por codegen-units=1).
+# Así, al REPOTENCIAR la caja (CCX13→CCX23/33), el worker auto-escala los slots sin tocar config.
+# La línea CCX da ~4GB RAM/core ⇒ nproc slots quedan con margen para builds Rust + swap.
 ExecStart=/opt/hammer/scripts/farm/farm-worker-loop.sh
 Restart=always
 RestartSec=30