Merge pull request #97213 from joesackmsft/patch-2

Information on subcore

Author: PRMerger14

articles/sql-database/sql-database-service-tiers-dtu.md

@@ -10,7 +10,7 @@ ms.topic: conceptual
 author: stevestein
 ms.author: sstein
 ms.reviewer: carlrab
-ms.date: 09/06/2019
+ms.date: 11/26/2019
 ---
 # Service tiers in the DTU-based purchase model
 
@@ -37,6 +37,10 @@ Choosing a service tier depends primarily on business continuity, storage, and p
 |In-memory OLTP|N/A|N/A|Supported|
 |||||
 
+> [!IMPORTANT]
+> The Basic, Standard S0, S1 and S2 tiers provide less than one vCore (CPU).  For CPU-intensive workloads, a service tier of S3 or greater is recommended. 
+>
+
 > [!NOTE]
 > You can get a free Azure SQL database at the Basic service tier in conjunction with an Azure free account to explore Azure. For information, see [Create a managed cloud database with your Azure free account](https://azure.microsoft.com/free/services/sql-database/).