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64-bit guest OS on vmware with AMD 754


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Anyone know if it's possible run a 64bit guest OS on vmware with any

AMD 754 pin CPU? When I try to create a virtual machine to do this

I get a message saying 64-bit guest is not supported on this host.

Vmware FAQ says CPU must be rev D or later or all CPUs build using

90nm will support it. I don't think AMD released any 754 pin CPUs using

the 90nm proccess but I don't know about Rev D.

And I am running XP x64 and vmware workstation 5.5

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You're outta luck. There are no revision D Socket 754 Athlon 64 processors. There are no 90nm Socket 754 processors. The last 754 core was the Clawhammer. You would need at minimum a Socket 939 90nm Winchester core, which is the first revision D. Venice cores and higher are revision E. Even a Socket 939 Clawhammer won't work because it is still a revision C 130nm part.

You're in good company, though, as I can't get a 64-bit OS to install on my Pentium 4 630 EM64T processor. I need a Pentium core that supports VT and that ain't arriving until 2006 with the first Pressler parts.

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Actually, I believe that the only socket desktop 754 AMD chip to be 90nm is a Sempron chip, with the Palermo core (only 256KB L2 cache) - the desktop 754 socket Athlon processors are still the older Newcastle and Clawhammer cores, which are 130nm. I don't know of any desktop 754's other than the Sempron Palermo core chip being made on 90nm, and the only Athlon 64's in the 754 socket to be made on the 90nm core are the Athlon 64m processors, which are the mobile processors for laptop systems (these are still fairly hard to come by, in my experience).

Note that the newer socket 939's with the Winchester core or newer (Winchester, Venice, San Diego, Manchester, Toledo) all are fabricated on 90nm. I'm pretty sure this is due to the fact that the 754 core has become the "budget" and mobile processor socket (which is what the Sempron is being fab'ed on), and the 939 and 940 are the "mainstream" and "workstation/server" sockets. If you don't have a 90nm chip, VMWare will not run a 64-bit guest OS. It's the only way (short of opening the box and looking at the die itself) to be sure you've got a rev.D Athlon 64.

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Thanks everyone for your help. Found some AMD 754 Palmero core CPU's at Newegg, but I think I'll wait for when I upgrade my graphics card and have to buy a new MB with PCI-express. Plus I don't know what the difference would

be going from a 1MB cache to a 256KB one.

Edited by jbm
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It depends - for just office work, probably nothing (hey, people use the castrated Celeron too without too many issues for office work). However, if you're a gamer, or a "power user", or basically anyone who would be building their own PC ( :P ), you'll want at least 1MB of L2 cache.

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Well, here's the results of my test:

Ran VMware 5.5 on WinXP Pro x64 (host OS).

Hardware - nForce 4 MoBo, Sempron 2500+ (socket 754, palermo core), 512 MB RAM.

Guest OSes installed:

WinXP Home (32-bit)

WinXP Pro (32-bit)

WinXP Pro (64-bit)

Windows Server 2003 (x64 edition)

So yes, the AMD 754 does run 64-bit OSes fine, in VMware 5.5

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Yeah, the Sempron 2500+ is a Palermo core part, so it should work :).

Try it with any other 754 ATHLON part, and it won't work. Only the Mobile Athlon and Sempron parts (on the Palermo core) will actually run without the error.

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Please clarify!

Do you mean, you want to dual-boot both?

Then of course its possible (if your Sempron3000+ is a 64-bit piece).

But then, I dont see how that post is relevant in a VMware thread. :} Do you mean to ask, whether you can run a 64-bit guest OS, in your 32-bit host OS?

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