diff --git a/hw/rtl/VX_config.vh b/hw/rtl/VX_config.vh
index 71afa182..f309a84a 100644
--- a/hw/rtl/VX_config.vh
+++ b/hw/rtl/VX_config.vh
@@ -44,9 +44,9 @@
 `ifndef EXT_T_DISABLE
 `define EXT_T_ENABLE
 // decoupled Hopper-style tensor core
-// `ifndef EXT_T_HOPPER
-// `define EXT_T_HOPPER
-// `endif
+`ifndef EXT_T_HOPPER
+`define EXT_T_HOPPER
+`endif
 `endif
 
 `ifndef XLEN_32
@@ -88,7 +88,7 @@
 `endif
 
 `ifndef NUM_CORES
-`define NUM_CORES 8
+`define NUM_CORES 4
 `endif
 
 `ifndef NUM_WARPS