 | | | Opteron or xeon? | Opteron or xeon? 2005-04-05 - By James Dc
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Xeons have had Hyperthreading since 1.8ghz. the desktop HT was
introduced much later.
Brad Friedman wrote:
> well... it probably should be noted... a xeon you buy today would not
> be the same class as a 2.66. Intel didn't do themselves any favors by
> not changing the names of their chips... but the xeons you buy today
> are very different.
>
> They're likely to have hyperthreading. And they're likely to have
> EMT64 (or is it ETM64? I dunno... I forget). And they're likely to
> have a much larger cache.
>
> I believe the current generation comes in speeds of 2.8, 3.0, 3.2, 3.4
> etc.
>
> For the record, I run dual 2.66 machines when I'm at school. I run
> dual 3.0 with HT and EMT64 at home. There is no comparison. My
> machine runs much faster than the one at school. Render times
> approach being twice as fast last time I checked.
>
> I suspect that the dual opterons are still a better deal than the
> newer xeons. But its worth mentioning there are different types of
> xeons with really significant differences.
>
> The only thing I've not been able to lock down yet is wheater EMT64 is
> a superset or subset of the 64bit instructions on the Opterons. I've
> heard it stated both ways at this point. And I've not yet heard how
> they perform with mental ray 64 bit on linux, relative to one another.
>
> -brad
>
> Oz Adi wrote:
>
>> we just did a little internal test, we compared a dual opteron 244
>> 1.79GHz (2GB Ram) with a Dual Xeon 2.66 (2 GB Ram)
>> on a scene with around 200K hairs, the opteron was about 1 minute
>> ahead of the xeon...
>> (we just wanted to check which one starts rendernig the hair first,
>> and let it render quarter a frame..)
>>
>> not scientific.. but a test :)
>>
>>
>> -- -- Original Message -- -- From: "digimata" <digimata@(protected)>
>> To: <XSI@(protected)>
>> Sent: Tuesday, April 05, 2005 5:51 PM
>> Subject: Re: Opteron or xeon?
>>
>>
>>> Does anyone have any actual rendering (numbers) comparison between
>>> the Xeon and Opteron in Mental Ray?
>>>
>>> Leoung
>>>
>>> Bernard Lebel wrote:
>>>
>>>> I'm a happy dual Opteron 244 user.
>>>> Also, it was reported recently that the next version of XSI (or the
>>>> one after?) will be 64bit.
>>>>
>>>>
>>>> Cheers
>>>> Bernard
>>>> ---
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>>>> in body:
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>>>> .
>>>>
>>>>
>>>
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>>
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>
>
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--
James De Colling
XSI / Shake
Fuse @ Mrppp
Ph: +61 3 9690 4044
Mb: +61 400 145 808
james@(protected) <mailto:james@(protected)>
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Xeons have had Hyperthreading since 1.8ghz. the desktop HT was
introduced much later.<br>
<br>
Brad Friedman wrote:<br>
<blockquote cite="mid4252C9B1.6020504@(protected)" type="cite">well... it
probably should be noted... a xeon you buy today would not be the same
class as a 2.66. Intel didn't do themselves any favors by not changing
the names of their chips... but the xeons you buy today are very
different.
<br>
<br>
They're likely to have hyperthreading. And they're likely to have
EMT64 (or is it ETM64? I dunno... I forget). And they're likely to
have a much larger cache.
<br>
<br>
I believe the current generation comes in speeds of 2.8, 3.0, 3.2, 3.4
etc.
<br>
<br>
For the record, I run dual 2.66 machines when I'm at school. I run
dual 3.0 with HT and EMT64 at home. There is no comparison. My
machine runs much faster than the one at school. Render times approach
being twice as fast last time I checked.
<br>
<br>
I suspect that the dual opterons are still a better deal than the newer
xeons. But its worth mentioning there are different types of xeons
with really significant differences.
<br>
<br>
The only thing I've not been able to lock down yet is wheater EMT64 is
a superset or subset of the 64bit instructions on the Opterons. I've
heard it stated both ways at this point. And I've not yet heard how
they perform with mental ray 64 bit on linux, relative to one another.
<br>
<br>
-brad
<br>
<br>
Oz Adi wrote:
<br>
<br>
<blockquote type="cite">we just did a little internal test, we
compared a dual opteron 244 1.79GHz (2GB Ram) with a Dual Xeon 2.66 (2
GB Ram)
<br>
on a scene with around 200K hairs, the opteron was about 1 minute ahead
of the xeon...
<br>
(we just wanted to check which one starts rendernig the hair first, and
let it render quarter a frame..)
<br>
<br>
not scientific.. but a test :)
<br>
<br>
<br>
-- -- Original Message -- -- From: "digimata"
<a class="moz-txt-link-rfc2396E" href="mailto:digimata@(protected)"><
;digimata@(protected)></a>
<br>
To: <a class="moz-txt-link-rfc2396E" href="mailto:XSI@(protected)"><XSI
@(protected)></a>
<br>
Sent: Tuesday, April 05, 2005 5:51 PM
<br>
Subject: Re: Opteron or xeon?
<br>
<br>
<br>
<blockquote type="cite">Does anyone have any actual rendering
(numbers) comparison between the Xeon and Opteron in Mental Ray?
<br>
<br>
Leoung
<br>
<br>
Bernard Lebel wrote:
<br>
<br>
<blockquote type="cite">I'm a happy dual Opteron 244 user.
<br>
Also, it was reported recently that the next version of XSI (or the
<br>
one after?) will be 64bit.
<br>
<br>
<br>
Cheers
<br>
Bernard
<br>
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<div align="center"><font color="#555555" face="Arial" size="2">James
De Colling</font></div>
<div align="center"><font color="#555555" face="Arial" size="2">XSI /
Shake</font></div>
<div align="center"><font color="#772929" face="Arial" size="2">Fuse @
Mrppp</font></div>
<div align="center"><font color="#555555" face="Arial" size="2">Ph: +61
3 9690 4044</font></div>
<div align="center"><font color="#555555" face="Arial" size="2">Mb: +61
400 145 808</font></div>
<div align="center"><font color="#5d758b" face="Arial" size="2"><a
href="mailto:james@(protected)">james@(protected)</a></font></div>
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