diff --git a/go.mod b/go.mod
index 07c666d..d138632 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/oneclickvirt/defaultset v0.0.2-20240624082446
 	github.com/oneclickvirt/disktest v0.0.10-20250924030424
 	github.com/oneclickvirt/gostun v0.0.5-20250727155022
-	github.com/oneclickvirt/memorytest v0.0.10-20250924154648
+	github.com/oneclickvirt/memorytest v0.0.10-20251218032900
 	github.com/oneclickvirt/nt3 v0.0.10-20251111095706
 	github.com/oneclickvirt/pingtest v0.0.9-20251104112920
 	github.com/oneclickvirt/portchecker v0.0.3-20250728015900
diff --git a/go.sum b/go.sum
index cb64a48..c7a160d 100644
--- a/go.sum
+++ b/go.sum
@@ -114,8 +114,8 @@ github.com/oneclickvirt/gostun v0.0.5-20250727155022 h1:/e3gSUrOp1tg/1NTRx+P8B51
 github.com/oneclickvirt/gostun v0.0.5-20250727155022/go.mod h1:pfp7MFZJK9n/KTLAVqqFcCAns4xqMykmjI+1UeF/vdE=
 github.com/oneclickvirt/mbw v0.0.1-20250808061222 h1:WGXOe6QvHiDRhPVMI0VcctjzW08kGvJf50yq5YeZCtw=
 github.com/oneclickvirt/mbw v0.0.1-20250808061222/go.mod h1:0Vq6NRpyLmGUdfHfL3uDcFsuZhi7KlG+OCs5ky2757Y=
-github.com/oneclickvirt/memorytest v0.0.10-20250924154648 h1:trk6oZ7xs1eVtr+6oIv5IX8LDVtEMG+E6GVzQ810BtU=
-github.com/oneclickvirt/memorytest v0.0.10-20250924154648/go.mod h1:4kiHsEWkW9r3/1ZcV5xIweU0smiKP0IRfQj74AUIiVI=
+github.com/oneclickvirt/memorytest v0.0.10-20251218032900 h1:SmRFfPLyGfTVWIgC50lEGgOpbqahtMHIlyOMSbrhj9Y=
+github.com/oneclickvirt/memorytest v0.0.10-20251218032900/go.mod h1:4kiHsEWkW9r3/1ZcV5xIweU0smiKP0IRfQj74AUIiVI=
 github.com/oneclickvirt/nt3 v0.0.10-20251111095706 h1:GEdgL6oAWXY80NIq23mLjcTR3gvLGh9iusFzJK6SoDo=
 github.com/oneclickvirt/nt3 v0.0.10-20251111095706/go.mod h1:yo1ufkduFt9QjqG7nqSUf1D3YlQOmFpdlTYniJfclQI=
 github.com/oneclickvirt/pingtest v0.0.9-20251104112920 h1:j3Fjhy0YHT/VF7iuAVVELaRXkquvRd64tWWfFLJs01o=
diff --git a/internal/tests/memory.go b/internal/tests/memory.go
index 09048d6..127db98 100644
--- a/internal/tests/memory.go
+++ b/internal/tests/memory.go
@@ -25,51 +25,132 @@ func MemoryTest(language, testMethod string) (realTestMethod, res string) {
 	if runtime.GOOS == "windows" {
 		switch testMethod {
 		case "stream":
-			res = memory.WinsatTest(language)
-			realTestMethod = "winsat"
+			res = memory.StreamTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.WinsatTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.WindowsDDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "winsat"
+				}
+			} else {
+				realTestMethod = "stream"
+			}
 		case "dd":
 			res = memory.WindowsDDTest(language)
 			if res == "" || strings.TrimSpace(res) == "" {
-				res += memory.WinsatTest(language)
-				realTestMethod = "winsat"
+				res = memory.WinsatTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.StreamTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "stream"
+					}
+				} else {
+					realTestMethod = "winsat"
+				}
 			} else {
 				realTestMethod = "dd"
 			}
 		case "sysbench":
+			// Windows下不支持sysbench，使用stream → winsat → dd
+			res = memory.StreamTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.WinsatTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.WindowsDDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "winsat"
+				}
+			} else {
+				realTestMethod = "stream"
+			}
+		case "auto":
+			res = memory.StreamTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.WinsatTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.WindowsDDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "winsat"
+				}
+			} else {
+				realTestMethod = "stream"
+			}
+		case "winsat":
 			res = memory.WinsatTest(language)
-			realTestMethod = "winsat"
-		case "auto", "winsat":
-			res = memory.WinsatTest(language)
-			realTestMethod = "winsat"
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.StreamTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.WindowsDDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "stream"
+				}
+			} else {
+				realTestMethod = "winsat"
+			}
 		default:
-			res = memory.WinsatTest(language)
-			realTestMethod = "winsat"
+			res = memory.StreamTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.WinsatTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.WindowsDDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "winsat"
+				}
+			} else {
+				realTestMethod = "stream"
+			}
 		}
 	} else {
 		switch testMethod {
 		case "stream":
 			res = memory.StreamTest(language)
 			if res == "" || strings.TrimSpace(res) == "" {
-				res += memory.DDTest(language)
-				realTestMethod = "dd"
+				res = memory.SysBenchTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.DDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "sysbench"
+				}
 			} else {
 				realTestMethod = "stream"
 			}
 		case "dd":
 			res = memory.DDTest(language)
-			realTestMethod = "dd"
-		case "sysbench":
-			res = memory.SysBenchTest(language)
 			if res == "" || strings.TrimSpace(res) == "" {
-				res += memory.DDTest(language)
-				realTestMethod = "dd"
-			} else {
-				realTestMethod = "sysbench"
-			}
-		case "auto":
-			res = memory.StreamTest(language)
-			if res == "" || strings.TrimSpace(res) == "" {
-				res = memory.DDTest(language)
+				res = memory.StreamTest(language)
 				if res == "" || strings.TrimSpace(res) == "" {
 					res = memory.SysBenchTest(language)
 					if res == "" || strings.TrimSpace(res) == "" {
@@ -78,15 +159,68 @@ func MemoryTest(language, testMethod string) (realTestMethod, res string) {
 						realTestMethod = "sysbench"
 					}
 				} else {
-					realTestMethod = "dd"
+					realTestMethod = "stream"
+				}
+			} else {
+				realTestMethod = "dd"
+			}
+		case "sysbench":
+			res = memory.SysBenchTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.StreamTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.SysBenchTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						res = memory.DDTest(language)
+						if res == "" || strings.TrimSpace(res) == "" {
+							realTestMethod = ""
+						} else {
+							realTestMethod = "dd"
+						}
+					} else {
+						realTestMethod = "sysbench"
+					}
+				} else {
+					realTestMethod = "stream"
+				}
+			} else {
+				realTestMethod = "sysbench"
+			}
+		case "auto":
+			res = memory.StreamTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.SysBenchTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.DDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "sysbench"
 				}
 			} else {
 				realTestMethod = "stream"
 			}
 		case "winsat":
-			// winsat 仅 Windows 支持，非 Windows fallback 到 dd
-			res = memory.DDTest(language)
-			realTestMethod = "dd"
+			// winsat 仅 Windows 支持，非 Windows fallback 到 stream → sysbench → dd
+			res = memory.StreamTest(language)
+			if res == "" || strings.TrimSpace(res) == "" {
+				res = memory.SysBenchTest(language)
+				if res == "" || strings.TrimSpace(res) == "" {
+					res = memory.DDTest(language)
+					if res == "" || strings.TrimSpace(res) == "" {
+						realTestMethod = ""
+					} else {
+						realTestMethod = "dd"
+					}
+				} else {
+					realTestMethod = "sysbench"
+				}
+			} else {
+				realTestMethod = "stream"
+			}
 		default:
 			res = "Unsupported test method"
 			realTestMethod = ""