diff --git a/tests/test_autochunk/benchmark_autochunk.py b/tests/test_autochunk/benchmark_autochunk.py
index 7a9d8cdee..6632ece61 100644
--- a/tests/test_autochunk/benchmark_autochunk.py
+++ b/tests/test_autochunk/benchmark_autochunk.py
@@ -98,14 +98,14 @@ def _build_openfold():
 def benchmark_evoformer():
     # init data and model
     msa_len = 256
-    pair_len = 256
+    pair_len = 512
     node = torch.randn(1, msa_len, pair_len, 256).cuda()
     pair = torch.randn(1, pair_len, pair_len, 128).cuda()
     model = evoformer_base().cuda()
 
     # build autochunk model
-    max_memory = 1000  # MB fit memory mode
-    # max_memory = None  # min memory mode
+    # max_memory = 1000  # MB, fit memory mode
+    max_memory = None  # min memory mode
     autochunk = _build_autochunk(evoformer_base().cuda(), max_memory, node, pair)
 
     # build openfold