diff --git a/README.md b/README.md
index cedbdfcb..641397f9 100644
--- a/README.md
+++ b/README.md
@@ -1615,7 +1615,7 @@ Round trip within same datacenter      500,000   ns      500 us
 Read 1 MB sequentially from SSD*     1,000,000   ns    1,000 us    1 ms  ~1GB/sec SSD, 4X memory
 HDD seek                            10,000,000   ns   10,000 us   10 ms  20x datacenter roundtrip
 Read 1 MB sequentially from 1 Gbps  10,000,000   ns   10,000 us   10 ms  40x memory, 10X SSD
-Read 1 MB sequentially from HDD     30,000,000   ns   30,000 us   30 ms 120x memory, 30X SSD
+Read 1 MB sequentially from HDD     20,000,000   ns   20,000 us   20 ms  80x memory, 20X SSD
 Send packet CA->Netherlands->CA    150,000,000   ns  150,000 us  150 ms
 
 Notes