diff --git a/ui/ceval/src/ctrl.ts b/ui/ceval/src/ctrl.ts
index b33d94ecdc..3a02f1d441 100644
--- a/ui/ceval/src/ctrl.ts
+++ b/ui/ceval/src/ctrl.ts
@@ -117,7 +117,8 @@ export default function (opts: CevalOpts): CevalCtrl {
     Math.min(Math.ceil((navigator.hardwareConcurrency || 1) / 4), maxThreads)
   );
 
-  const maxHashSize = Math.min(((navigator.deviceMemory || 0.25) * 1024) / 8, growableSharedMem ? 1024 : 16);
+  const estimatedMinMemory = (technology == 'hce' || technology == 'nnue') ? 2.0 : 0.5;
+  const maxHashSize = Math.min(((navigator.deviceMemory || estimatedMinMemory) * 1024) / 8, growableSharedMem ? 1024 : 16);
   const hashSize = storedProp(storageKey('ceval.hash-size'), 16);
 
   const multiPv = storedProp(storageKey('ceval.multipv'), opts.multiPvDefault || 1);