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What is the difference in running an application in x86 Windows 2003 or running it on a x64 bit version using the WOW64.<br />
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Ive heard about x64 using AWE and can only address 3GB of RAM. Then again, they say you can address 4GB of ram in native x86. So does this mean running my app in x86 will be faster?
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What is the difference in running an application in x86 Windows 2003 or running it on a x64 bit version using the WOW64.

Ive heard about x64 using AWE and can only address 3GB of RAM. Then again, they say you can address 4GB of ram in native x86. So does this mean running my app in x86 will be faster?

Windows Server 2003 32-bit vs running 32-bit apps on x64

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.