diff --git a/cub/device/dispatch/dispatch_radix_sort.cuh b/cub/device/dispatch/dispatch_radix_sort.cuh
index 7d2bedf77f..04b5461f91 100644
--- a/cub/device/dispatch/dispatch_radix_sort.cuh
+++ b/cub/device/dispatch/dispatch_radix_sort.cuh
@@ -865,10 +865,10 @@ struct DeviceRadixSortPolicy
 
 
         // ScanPolicy
-        typedef AgentScanPolicy <512, 23, OffsetT, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_STORE_WARP_TRANSPOSE, BLOCK_SCAN_RAKING_MEMOIZE> ScanPolicy;
+        typedef AgentScanPolicy <256, 23, OffsetT, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_STORE_WARP_TRANSPOSE, BLOCK_SCAN_RAKING_MEMOIZE> ScanPolicy;
 
         // Downsweep policies
-        typedef AgentRadixSortDownsweepPolicy <512, 23, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MATCH, BLOCK_SCAN_WARP_SCANS, PRIMARY_RADIX_BITS>   DownsweepPolicy;
+        typedef AgentRadixSortDownsweepPolicy <256, 23, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MATCH, BLOCK_SCAN_WARP_SCANS, PRIMARY_RADIX_BITS>   DownsweepPolicy;
         typedef AgentRadixSortDownsweepPolicy <(sizeof(KeyT) > 1) ? 256 : 128, 47, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, PRIMARY_RADIX_BITS - 1>   AltDownsweepPolicy;
 
         // Upsweep policies
@@ -879,8 +879,8 @@ struct DeviceRadixSortPolicy
         typedef AgentRadixSortDownsweepPolicy <256, 19, DominantT,  BLOCK_LOAD_DIRECT, LOAD_LDG, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SINGLE_TILE_RADIX_BITS>          SingleTilePolicy;
 
         // Segmented policies
-        typedef AgentRadixSortDownsweepPolicy <192, 39, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS>     SegmentedPolicy;
-        typedef AgentRadixSortDownsweepPolicy <384, 11, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS - 1> AltSegmentedPolicy;
+        typedef AgentRadixSortDownsweepPolicy <128, 39, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS>     SegmentedPolicy;
+        typedef AgentRadixSortDownsweepPolicy <256, 11, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS - 1> AltSegmentedPolicy;
     };
 
 
@@ -907,10 +907,10 @@ struct DeviceRadixSortPolicy
             RADIX_SORT_STORE_DIRECT, ONESWEEP_RADIX_BITS> OnesweepPolicy;
 
         // ScanPolicy
-        typedef AgentScanPolicy <512, 23, OffsetT, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_STORE_WARP_TRANSPOSE, BLOCK_SCAN_RAKING_MEMOIZE> ScanPolicy;
+        typedef AgentScanPolicy <256, 23, OffsetT, BLOCK_LOAD_WARP_TRANSPOSE, LOAD_DEFAULT, BLOCK_STORE_WARP_TRANSPOSE, BLOCK_SCAN_RAKING_MEMOIZE> ScanPolicy;
 
         // Downsweep policies
-        typedef AgentRadixSortDownsweepPolicy <512, 23, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MATCH, BLOCK_SCAN_WARP_SCANS, PRIMARY_RADIX_BITS>   DownsweepPolicy;
+        typedef AgentRadixSortDownsweepPolicy <256, 23, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MATCH, BLOCK_SCAN_WARP_SCANS, PRIMARY_RADIX_BITS>   DownsweepPolicy;
         typedef AgentRadixSortDownsweepPolicy <(sizeof(KeyT) > 1) ? 256 : 128, 47, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, PRIMARY_RADIX_BITS - 1>   AltDownsweepPolicy;
 
         // Upsweep policies
@@ -921,8 +921,8 @@ struct DeviceRadixSortPolicy
         typedef AgentRadixSortDownsweepPolicy <256, 19, DominantT,  BLOCK_LOAD_DIRECT, LOAD_LDG, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SINGLE_TILE_RADIX_BITS>          SingleTilePolicy;
 
         // Segmented policies
-        typedef AgentRadixSortDownsweepPolicy <192, 39, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS>     SegmentedPolicy;
-        typedef AgentRadixSortDownsweepPolicy <384, 11, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS - 1> AltSegmentedPolicy;
+        typedef AgentRadixSortDownsweepPolicy <128, 39, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS>     SegmentedPolicy;
+        typedef AgentRadixSortDownsweepPolicy <256, 11, DominantT,  BLOCK_LOAD_TRANSPOSE, LOAD_DEFAULT, RADIX_RANK_MEMOIZE, BLOCK_SCAN_WARP_SCANS, SEGMENTED_RADIX_BITS - 1> AltSegmentedPolicy;
     };