On exactly the same hardware, my 3DMark06 score is 20% lower under Vista
Ultimate x64 than it was under XP Professional x86. What would be the
possible reasons for this? Driver issue perhaps?

--
And loving it,

-Q
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Could be a driver issue. Could be the thunking level between the 64 bit OS
and the 32 bit benchmarks. Could be a lot of things, actually.

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"Qu0ll" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On exactly the same hardware, my 3DMark06 score is 20% lower under Vista
> Ultimate x64 than it was under XP Professional x86. What would be the
> possible reasons for this? Driver issue perhaps?
>
> --
> And loving it,
>
> -Q
> ______________________________________________
> (E-Mail Removed)
> (Replace the "SixFour" with numbers to email)

On Wed, 7 Mar 2007 08:43:15 +1100, "Qu0ll" <(E-Mail Removed)>
wrote:

>On exactly the same hardware, my 3DMark06 score is 20% lower under Vista
>Ultimate x64 than it was under XP Professional x86. What would be the
>possible reasons for this? Driver issue perhaps?

Yep. Most likely a driver issue.

20% is a bit high, but then again, isn't that in the ball park of what
Microsoft said it would be ? I've heard different numbers bounced around,
but generically isn't it expect to be anywhere from 3-15% ?

With that said , Here's my result with the latest ATI 7.2 drivers
My 3dmark06 score under XP32 is 6090 -
http://service.futuremark.com/compare?3dm06=1377872
My 3dmark06 score under Vista32 is 6013 -
http://service.futuremark.com/compare?3dm06=1378527
My 3dmark06 score under Vista64 is 5968 -
http://service.futuremark.com/compare?3dm06=1290659

If you are running nVida, you might be waiting a little while longer for
better\stable\optimized drivers. They seem to have their hands full at the
moment

"Qu0ll" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On exactly the same hardware, my 3DMark06 score is 20% lower under Vista
> Ultimate x64 than it was under XP Professional x86. What would be the
> possible reasons for this? Driver issue perhaps?
>
> --
> And loving it,
>
> -Q
> ______________________________________________
> (E-Mail Removed)
> (Replace the "SixFour" with numbers to email)