Xeon - How to tell dual or single core?

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Hi all,

I have a chance to buy a Dell Precision 670 workstation (3.0Ghz) at what
seems to be a pretty good price.

The information I've found online suggests that these were available
with both dual-core and single-core Xeon processors (one or two of
each)

I'm probably only interested if it's got the dual-core CPU
configuration.

The machine is running XP - is there a simple method of determining if
it's single or dual core?

All information/help muchly appreciated.

Thanks in advance,
Andy.

Re: Xeon - How to tell dual or single core?

Andy wrote:
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Right click my computer select properties. The page that comes up will tell
you what the processor(s) are.

Re: Xeon - How to tell dual or single core?

Andy wrote:
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The Precision 670 uses a 7525 Northbridge. (You should verify I got the right
one.)

http://support.dell.com/support/edocs/systems/ws470/en/ug_en/about.htm#wp1053318

Tyan makes a motherboard using that Northbridge, and the processor support
list for that Tyan board is here. I'm using this as a way to approximate
the support for the Dell box (since I cannot find any advice for the 670).

http://www.tyan.com/archive/support/html/cpu_xeon_p4.html

If you scroll down to "Thunder i7525", the supported processors are:

S604 FSB800 2MB L2 cache = 2.8, 3.0, 3.2, 3.4, 3.6, 3.8 GHz
S604 FSB800 1MB L2 cache = 2.8, 2.8^, 3.0, 3.2, 3.4, 3.6 GHz

^ = Low power Xeon.

Those would be single core. They probably have Hyperthreading
(but the Intel processorfinder.intel.com site shows blanks for
the information section of those processors, so I cannot verify
that).

This is an Intel provided utility. I don't know whether it
handles multiple socket motherboards or not. Another utility
you can use, is CPUZ from cpuid.com .

http://www.intel.com/support/processors/tools/piu/sb/CS-014921.htm

HTH,
    Paul

Re: Xeon - How to tell dual or single core?

* Andy:

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Hopefully the price is really good. The 670s are quite old.

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These information is wrong. The 670 is a dual socket604 system, and only
can take single core XEON DP from 2.8 to 3.6GHz (there was a dual core
2.8GHz version but they don't work in the Precision 670!). All of them
support HyperThreading, that means every processor shows two logical
CPUs to the OS. So looking at how many processors are visible in Windows
is just useless.

These XEON are based on the P4 Netburst architecture, that means they
run very hot, and the faster variants can't keep up with even a single
faster Core2 Duo processor. The Precision 670 uses the intel E7525
chipset which has a shared 800MHz FSB and needs DDR2-400 Registered ECC
memory.

Compared with a modern Core2 Duo E6600 or faster, you're probably way
better with the Core2.

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It doesn't exist. Saldy, a lots of sellers are either too naive to
realize that HyperThreading is not "dual core", or probably want to pull
people over the table by knwoingly describing it as "dual core" when in
fact it isn't.

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As I said, a Precision 670 with dual core processors doesn't exist. Period.

Benjamin

Re: Xeon - How to tell dual or single core?

* Andy:

 > I have a chance to buy a Dell Precision 670 workstation (3.0Ghz) at what
 > seems to be a pretty good price.

Hopefully the price is really good. The 670s are quite old and slow now.
We still have some around at work, though, as they are very reliable.

 > The information I've found online suggests that these were available
 > with both dual-core and single-core Xeon processors (one or two of
 > each)

These information is just wrong. The Precision 670 is a dual socket604
system, and only can take single core XEON DP from 2.8 to 3.6GHz (there
was a dual core 2.8GHz version but they don't work in the Precision
670!). All of them support HyperThreading, that means every processor
shows two logical CPUs to the OS. So looking at how many processors are
visible in Windows is just useless.

These XEON are based on the old Pentium4 Netburst architecture, that
means they run very hot, and even two of the faster variants (3.6GHz)
can't keep up with one of the faster single Core2 Duo processors. The
Precision 670 uses the intel E7525 chipset which has a shared 800MHz FSB
and needs DDR2-400 Registered ECC memory.

Comparing a dual processor Precision 670 with a modern Core2 Duo E6600
or faster, you're probably way better with the Core2 Duo system.

 > I'm probably only interested if it's got the dual-core CPU
 > configuration.

It just doesn't exist. Sadly, a lot of sellers are either too naive to
realize that HyperThreading is not really "dual core", or probably just
want to pull people over the table by knowingly describing it as "dual
core" when in fact it isn't.

 > The machine is running XP - is there a simple method of determining if
 > it's single or dual core?

As I said, a Precision 670 with dual core processors doesn't exist. Period.

Benjamin

Re: Xeon - How to tell dual or single core?

* Andy:

 > I have a chance to buy a Dell Precision 670 workstation (3.0Ghz) at what
 > seems to be a pretty good price.

Hopefully the price is really good. The 670s are quite old and slow now.
We still have some around at work, though, as they are very reliable.

 > The information I've found online suggests that these were available
 > with both dual-core and single-core Xeon processors (one or two of
 > each)

These information is just wrong. The Precision 670 is a dual socket604
system, and only can take single core XEON DP from 2.8 to 3.8GHz (there
was a dual core 2.8GHz version but they don't work in the Precision
670!). All of them support HyperThreading, that means every processor
shows two logical CPUs to the OS. So looking at how many processors are
visible in Windows is just useless.

These XEON are based on the old Pentium4 Netburst architecture, that
means they run very hot, and even two of the faster variants
(3.6GHz/2MB) can't keep up with one of the faster single Core2 Duo
processors like an E6650. The Precision 670 uses the intel E7525 chipset
which has a shared 800MHz FSB and needs DDR2-400 Registered ECC memory.

Comparing a dual processor Precision 670 with a modern Core2 Duo E6650
or faster, you're probably way better with the Core2 Duo system. Not
only it's faster, it also consumes less power.

 > I'm probably only interested if it's got the dual-core CPU
 > configuration.

It just doesn't exist. Sadly, a lot of sellers are either too naive to
realize that HyperThreading is not really "dual core", or probably just
want to pull people over the table by knowingly describing it as "dual
core" when in fact it isn't.

 > The machine is running XP - is there a simple method of determining if
 > it's single or dual core?

As I said, a Precision 670 with dual core processors doesn't exist. Period.

Benjamin

Re: Xeon - How to tell dual or single core?

Benjamin Gawert wrote:

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<snip>
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...

Thankyou Benjamin, Paul and PS for your speedy and helpful responses.

Looks like I'll give it a miss.  It won't be much (if any) kind of
'upgrade' from what I'm running now - Sounds like I'll need to save
for an extra week or two and build my own box based on a Core2 Duo
(can't imagine I'll see much extra benefit from going quad-core).  I
have enough heat issues here as it is!

Cheers, and thanks again,
Andy.


Re: Xeon - How to tell dual or single core?




I have two precisions 670's and I have found that some of the systems
support
dual core SL8MA cpu's.  I have one of each.  Inspection of my
motherboards in
each systems does not indicate that there is a
difference.  I have attempted to
install dual core cpu's, ones from the
dual core system and others that I have
purchased.  No matter what I
have tried on the other system I cannot install the
dual core cpu's.  I
get a message that says that the system has detected an
unsupported
processor.

Would anyone out there happen to know why some 670 motherboards support
dual
core SL8MA's and some do not?



Re: Xeon - How to tell dual or single core?



tdoggwise wrote:
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Different age in flash bios software?
Check whether an update is available for the
particular board.

Re: Xeon - How to tell dual or single core?


Hi, I have the same question. I have a 2004 Preciaion 670 and I want to
upgrade to dual core. These are the processors that, on the surface,
seem to be candidates. Can anyone verify what the issue is? I think
there may have been a system change in 2006, and I saw Del specs for the
670 stating clearly that it supports either single or dual core
processors.


1. Xeon (UP/DP), Dual Core "Paxville DP" (90 nm)Based on NetBurst
microarchitecture

All models support: MMX, SSE, SSE2, SSE3, Hyper-Threading, Intel 64, XD
bit (an NX bit implementation) Steppings: A0

Model Number sSpec Number Frequency L2 Cache FSB Mult Voltage TDP
Socket Release Date Part Number(s) Release

Xeon 2.8 SL8MA (A0) 2800 MHz 2 × 2048 KiB 800 MT/s 14x 1.2875-1.4125 V
135 W Socket 604 October 10, 2005 NE80551KG0724MM


2. Xeon MP, Dual Core "Paxville MP" (90 nm)Based on NetBurst
microarchitecture

All models support: MMX, SSE, SSE2, SSE3, Hyper-Threading, Intel 64, XD
bit (an NX bit implementation), Intel VT-x

Demand Based Switching (Intel's Server EIST): All except 7030.
Steppings: A0

Model Number sSpec Number Frequency L2 Cache FSB Mult Voltage TDP
Socket Release Date Part Number(s) Release

Xeon 7030 SL8UB (A0) 2800 MHz 2 × 1024 KiB 800 MT/s 14x 1.2625-1.4125 V
165 W Socket 604 December 2005 NE80560KG0722MH

Xeon 7041 SL8UD (A0) 3000 MHz 2 × 2048 KiB 800 MT/s 15x 1.2625-1.4125 V
165 W Socket 604 December 2005 NE80560KG0804MH


3. Xeon MP, Dual Core "Tulsa" (65 nm)Based on NetBurst
microarchitecture

All models support: MMX, SSE, SSE2, SSE3, Hyper-Threading, Intel 64, XD
bit (an NX bit implementation), Intel VT-x

All models support quad-processor and octo-processor configurations
Demand Based Switching (Intel's Server EIST): Supported by: All except
7110M/N & 7120M/N.

Die size: 435 mm˛ Steppings: B0

Model Number sSpec Number Frequency L2 Cache L3 Cache FSB Mult Voltage
TDP Socket Release Date Part Number(s) Release

Xeon 7110M SL9Q9 (B0) 2600 MHz 2 × 1024 KiB 4096 KiB 800 MT/s 13x
1.1-1.35 V 95 W Socket 604 August 27, 2006 LF80550KG0644M

Xeon 7120M SL9HC (B0) 3000 MHz 2 × 1024 KiB 4096 KiB 800 MT/s 15x
1.1-1.35 V 95 W Socket 604 August 27, 2006 LF80550KG0804M

Xeon 7130M SL9HB (B0) 3200 MHz 2 × 1024 KiB 8192 KiB 800 MT/s 16x
1.1-1.35 V 150 W Socket 604 August 27, 2006 LF80550KG0888M

Xeon 7140M SL9HA (B0) 3400 MHz 2 × 1024 KiB 16384 KiB 800 MT/s 17x
1.1-1.35 V 150 W Socket 604 August 27, 2006 LF80550KG096007


Best,
John




Sjouke Burry;1168384 Wrote:
> tdoggwise wrote:

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> systems

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> my

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> the

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> I

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> support

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Re: Xeon - How to tell dual or single core?


As this thread seems to still be alive I guess someone might want the
answer to the original question, or though probably no longer the
enquirer of 2009.


In XP type alt-ctl-del to bring up Windows Task Manager and click the
'Performance' tab. The 'CPU Usage History' will have a separate graph
for each core, so two processors and four windows = dual core
processors.


I have a 470 with dual core processors but the PSU has died, and a 670
with single core processors. I reckon the easiest way to find out if the
dual core processors will work in the 670 is to get off the keyboard try
them ;)


Cheers, geoff




Re: Xeon - How to tell dual or single core?

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I know I'm splitting hairs here, but it depends:

one graph = single core
two graphs = two processors, dual core or single core with hyperthreading
four graphs = quad core, dual core with hyperthreading or two dual core
processors
eight graphs = quad core with hyperhreading, etc etc

also, this is only if View > CPU History > One graph per CPU is selected,
otherwise you only get one combined graph.

--
 Brian Cryer
 http://www.cryer.co.uk/brian


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