Windows System Requirements for JDK and JRE

See JDK 7 and JRE 7 Installation Guide for general information about installing JDK 7 and JRE 7.

This information covers processor, disk space, and memory requirements for the following platforms:

32-bit Platforms

The following topics are covered:

Processor Requirements

Both the Java SE Development Kit (JDK) and Java SE Runtime Environment (JRE) require at minimum a Pentium 2 266 MHz processor.

Disk Space Requirements

For the JDK, you are given the option of installing the following features:

Note:

In addition to the disk space required for the installed images, there must be sufficient disk space for Java Update. The table that follow show the various disk space requirements for the JRE and JDK:

Disk Space Requirements for JRE
JRE Installed Image
Java Runtime Environment, including JavaFX Runtime 124 MB
Java Update 2 MB
Disk Space Requirements for JDK
JDK Installed Image
Development Tools, including JavaFX SDK 245 MB
Source Code 27 MB
Public Java Runtime Environment See the table, "Disk Space Requirements for JRE"

Memory Requirements

The following table lists the minimum memory requirements for Windows 32-bit operating systems.

Note: The minimum physical RAM is required to run graphically based applications. More RAM is recommended for applets running within a browser using Java Plug-in technology. Running with less memory may cause disk swapping, which has a severe effect on performance. Very large programs may require more RAM for adequate performance.

Microsoft Windows 32-Bit
Version Memory
Windows 8 128 MB
Windows 7 128 MB
Windows Vista 128 MB
Windows Server 2008 128 MB
Windows XP 64 MB

64-bit Platforms

The following topics are covered:

Processor Requirements

Both the JDK and JRE require at minimum a Pentium 2 266 MHz processor.

Disk Space Requirements

Memory Requirements

The following tables list the minimum memory requirements for Windows 64-bit operating systems:

Note: The minimum physical RAM is required to run graphically based applications. More RAM is recommended for applets running within a browser using the Java Plug-in. Running with less memory may cause disk swapping, which has a severe effect on performance. Very large programs may require more RAM for adequate performance.

Microsoft Windows x64, 32-Bit Mode
Version Memory
Windows 8 128 MB
Windows 7 128 MB
Windows Server 2008 128 MB
Windows Vista 128 MB
Windows XP 128 MB
Microsoft Windows x64, 64-Bit Mode
Version Memory
Windows 8 128 MB
Windows 7 128 MB
Windows Server 2008 128 MB
Windows Server 2008 R2 128 MB
Windows Vista 128 MB
Windows XP 128 MB

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