Similarly to ESX 4.0, ESXi 4.0 is a 64-bit hypervisor. This means that the underlying hardware needs to support 64-bit operations in order for ESXi 4.0 to work. As you know, 64-bit instruction sets allow access to more system resources, such as memory and storage, as compared to their 32-bit counterparts.
While ESXi 4.0 does not work on older, 32-bit servers, it has a much larger hardware compatibility list than ESXi 3.5. You can look for ESXi 4.0 compatible systems here.
As of writing this blog, over 60 vendors have participated to deliver
- 137 servers qualified and certified for ESXi 4.0 (embedded)
- 663 servers qualified and certified for ESXi 4.0 (installable)
Comparatively, there are 795 servers on ESX 4.0's hardware compatibility list.
All mainstream, high-volume servers are in the ESXi 4.0 hardware compatibility list (both for embedded and installable form factors). Here is partial list of current server vendors that certified systems for ESXi 4.0:
- AMAX Information Technologies
- Cisco
- Compusys
- DELL
- Fujitsu Siemens Computers
- HP
- IBM
- Intel
- Lenovo
- Rackable Systems
- Samsung
- Sun Microsystems, Inc.
- Unisys
- Verari
- Wipro
A final note: When installing ESXi 4.0 on a 64-bit server, please ensure that the BIOS settings allow that server to run in the 64-bit mode. Many servers are 64-bit capable but are set to operate in a 32-bit mode.
The ESX Team

It’s somewhat rare to find an engineering text that manages to be both readable and informative.A good post which covers huge area of computer hardware!! Essential for all computer user!!
Hi all,
I”ve tried to install ESXi4 on Intel core 2 duo E8400 3ghz, 4G RAM, Realtek RTL 8139/810X but always I get error message :
“No compatible network adapter found please consult Hardware Compatibility Guide for supported adapters”
I’ve tried with “Realtek RLT8168 Driver oem.tgz package” given in this site but no result.
Can any one please give me a link where can I find the right driver for my network adapter?
KR,
Zinou.
Hi all,
I”ve tried to install ESXi4 on Intel core 2 duo E8400 3ghz, 4G RAM, Realtek RTL 8139/810X but always I get error message :
“No compatible network adapter found please consult Hardware Compatibility Guide for supported adapters”
I’ve tried with “Realtek RLT8168 Driver oem.tgz package” but no result.
Can any one please give me a link where can I find the right driver for my network adapter?
KR,
Zinou.
Does VMware support either one of these motherboards?
Gigabyte GA-X58A-UD5
or
Asus P6X58D PREMIUM
I have attempted to install 4.0 Update1 ESXi on a system with a Realtek 8111c Network interface adapter. The install gets approximately 60-65% through the install and halts. The error is “No compatible network adapter found please consult Hardware Compatibility Guide for supported adapters”. I have checked the HCG before the install to ensure the MB and all related components are compatible and they are including the Realtek 8111c adapter. The Adapter resides On-board of a Giga-byte MB EP54T-UD3 system board. The installer even recognizes it and the MFG. However this error persists. Can someone please shed some light on this and a possible way to rectify.
Please post technical questions to the ESXi 4 Forum, since this is much more actively monitored by experts who can help. http://communities.vmware.com/community/vmtn/vsphere/esxi?view=discussions
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