AMD "Phenom" cpu?

ADDMP
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Topic 193370

Does anyone here have experience with the AMD "Phenom" processor for E@H? Comparison to Core 2?

Thanks,
ADDMP.

Donald A. Tevault
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AMD "Phenom" cpu?

Quote:

Does anyone here have experience with the AMD "Phenom" processor for E@H? Comparison to Core 2?

Thanks,
ADDMP.

I would doubt it. Since AMD found the TLB erratum, they've pretty much quit selling the whole Barcelona/Phenom line. They don't expect to have the new stepping--which fixes the problem--out until spring.

th3
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Phenom will mature over time,

Phenom will mature over time, as Athlon64 did. Early revision AMDs havent been that great, and with the added complexity of Phenom over A64 i think it can take a long time. Looks like AMD tried to bite over too much this time, so at least wait for revision B3 before even considering Phenom.

Fabian L.
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I found the first AMD Phenom

I found the first AMD Phenom 9500 computers at E@H. here and here

nice CPUs... in spring 2008 I change my "old" 5600+ to a Phenom CPU :D

Bikeman (Heinz-Bernd Eggenstein)
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RE: I found the first AMD

Message 75841 in response to message 75840

Quote:

I found the first AMD Phenom 9500 computers at E@H. here and here

nice CPUs... in spring 2008 I change my "old" 5600+ to a Phenom CPU :D

Hi!

But the performance on a per core basis when compared to a C2D isn't really spectacular for the Einstein@Home Windows app.

CU
Bikeman

Winterknight
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RE: RE: I found the first

Message 75842 in response to message 75841

Quote:
Quote:

I found the first AMD Phenom 9500 computers at E@H. here and here

nice CPUs... in spring 2008 I change my "old" 5600+ to a Phenom CPU :D

Hi!

But the performance on a per core basis when compared to a C2D isn't really spectacular for the Einstein@Home Windows app.

CU
Bikeman


Now there is an understatement.

Andy
core2 owner

ADDMP
ADDMP
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RE: I found the first AMD

Message 75843 in response to message 75840

Quote:

I found the first AMD Phenom 9500 computers at E@H. here and here

nice CPUs... in spring 2008 I change my "old" 5600+ to a Phenom CPU :D

******

Thanks for pointing out those results. Those were the comparative results I was looking for.

As others have pointed out here, a Phenom core does not look competitive with a Core 2 core. Too bad; I like to see tight competition in the computer biz. And as I have commented in another thread, Akos seems to be making great progress on additional magic for the Core 2.

ADDMP

roadrunner_gs
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Phew! As slow as a X2 with

Phew!
As slow as a X2 with the same speed? Hence you only benefit from the doubled core count.
A Xeon X3210 would be faster with less speed.

AMD Athlon(tm)64 X2 Dual Core Processor 3800+
Intel(R) Pentium(R) M processor 2.00GHz (WU 35823358 finished with 1.8 GHz, WU 35907781 ~20% with 1.8 GHz, afterwards the laptop was updated with a faster CPU)
Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz

I have to figure out whether i go to the post office tomorow to get my ordered AMD Athlon X2 BE-2300 along with 4 GB RAM and a fitting motherboard.
This is meant to replace my two AMD Opteron(tm) Processor 144 as server, now with XEN onboard, no need for two boxes anymore... :D
Or should i redeploy the Core 2 Duo at home rather than at work?
What are you folks thinking?

ohiomike
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RE: Phew! As slow as a X2

Message 75845 in response to message 75844

Quote:
Phew!
As slow as a X2 with the same speed? Hence you only benefit from the doubled core count.


I picked up a Phenom 9500 to update an old system. Performance-wise it is behind the Intel Q6600; but on the up-side- it does roughly twice the work of my AMD 4200+ X2 at the same or less power usage than the dual core.
(PS- It is still somewhat of a struggle to install Linux, Bios upgrades, driver support, etc).
Phenom 9500
4200+ X2


hoarfrost
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RE: RE: Phew! As slow as

Message 75846 in response to message 75845

Quote:
Quote:
Phew!
As slow as a X2 with the same speed? Hence you only benefit from the doubled core count.

I picked up a Phenom 9500 to update an old system. Performance-wise it is behind the Intel Q6600; but on the up-side- it does roughly twice the work of my AMD 4200+ X2 at the same or less power usage than the dual core.
(PS- It is still somewhat of a struggle to install Linux, Bios upgrades, driver support, etc).
Phenom 9500
4200+ X2


Very intresting!

Your "upgrade" Phenom 9500 ~ (4U / 38.5) / (2U/27.0) ~ 1.4 faster than my Core 2 Duo E6550 @3.15 GHz!

Thank you!

Bikeman (Heinz-Bernd Eggenstein)
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RE: Very intresting! Your

Message 75847 in response to message 75846

Quote:


Very intresting!

Your "upgrade" Phenom 9500 ~ (4U / 38.5) / (2U/27.0) ~ 1.4 faster than my Core 2 Duo E6550 @3.15 GHz!


But note that you run your C2D under Windows using the E@H client that still uses scalar FPU instructions, while the Phenom is running under Linux and is using a "power user app", which means faster SSE (vector) math instructions. If you were using that app as well under Linux, your C2D would be able to come much closer to the Phenom although the Phenom has twice as many cores.

Meanwhile, it looks like the next stepping of the Phenom that will correct the so called "TLB-bug" will only be released in the 2nd quarter of 2008.

CU
Bikeman

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