Vintage & unusual Computers on Einstein@Home

hoarfrost
hoarfrost
Joined: 9 Feb 05
Posts: 207
Credit: 51,887,215
RAC: 3,928

Hello,

Message 69996 in response to message 69995

Hello, Gary!

Quote:
This host is one of my two sempron 140 "dual cores" and as you can see it is quite productive and crunching its tasks a bit faster than your 145 (and two at a time as well).


My previous Sempron (as well as you Sempron - 140, 2.7 GHz) successfully unlocked to Athlon II X2 4400e. I do not overckock it. Now this computer works for my frend. But I bought a new budget computer with Sempron 145 and MSI 760GM-P23 (FX) motherboard (~ $34 for CPU and ~ $47 for this pretty motherboard in Russia) with simple but tranquil cooler (~ $5), 400 Watt power supply (~ $27) and two 4Gb Samsung RAM ~ $24 for each.

New CPU was not unlocked, but I gradually overclock it and made a shots of some steps:
AMD Sempron 145: 3220 MHz
AMD Sempron 145: 3430 MHz
AMD Sempron 145: 3500 MHz
AMD Sempron 145: 3780 MHz

After complete of calculation of next unit I take the following 10 MHz-step оn FSB clock. Now my Sempron crunch a GW-task on 3920 MHz clockrate.
I start from 2.8 GHz, 48 C temperature of core and 1.320 CPU voltage.
Now CPU run on 3.94 GHz, 50 C temperature and same 1.320V от CPU.

GW -task completed on 80.325% and after a 50 minutes, probably, I will take a following step. :)

[AF>Le_Pommier>Macbidouille.com]CRISTOBOOL
[AF>Le_Pommi...
Joined: 10 Dec 05
Posts: 59
Credit: 62,971
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hello ! i have some questions

hello ! i have some questions ;i recovered an P4 prescott 3,2Ghz and i resume to work einstein on my old G5 1,8Ghz .

I stopped for some years einstein

so i'm surprise by CPU performance (i told only of GW S6)

some years ago einstein use hyperthreading on P4 and SIMD (SSE/altivec) on both computer and the G5 1,8 Ghz was equivalent of a P4 2,8 GHZ what was pretty correct

today P4 3,2 Ghz is 90 % faster than G5 1,8Ghz ! (SSE2/altivec use on both )

einstein use HT on P4 ;
is it HT use on core 2 duo/corei and phenom today ?

because if one core of intel CPU do two WU in the same time with like the P4
i calculate that one core of C2D 2,56 Ghz is 4 time faster than the P4 !!

so i'm surprise by difference beetwen P4 and core2duo
and i think that my poor G5 does not enjoy the same optimization software

hoarfrost
hoarfrost
Joined: 9 Feb 05
Posts: 207
Credit: 51,887,215
RAC: 3,928

Now: AMD Sempron 145: 3920

Now: AMD Sempron 145: 3920 MHz. But crunch Cosmology@Home units.

Bikeman (Heinz-Bernd Eggenstein)
Bikeman (Heinz-...
Moderator
Joined: 28 Aug 06
Posts: 3,516
Credit: 460,264,006
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RE: hello ! i have some

Message 69999 in response to message 69997

Quote:

hello ! i have some questions ;i recovered an P4 prescott 3,2Ghz and i resume to work einstein on my old G5 1,8Ghz .

I stopped for some years einstein

so i'm surprise by CPU performance (i told only of GW S6)

some years ago einstein use hyperthreading on P4 and SIMD (SSE/altivec) on both computer and the G5 1,8 Ghz was equivalent of a P4 2,8 GHZ what was pretty correct

today P4 3,2 Ghz is 90 % faster than G5 1,8Ghz ! (SSE2/altivec use on both )

einstein use HT on P4 ;
is it HT use on core 2 duo/corei and phenom today ?

because if one core of intel CPU do two WU in the same time with like the P4
i calculate that one core of C2D 2,56 Ghz is 4 time faster than the P4 !!

so i'm surprise by difference beetwen P4 and core2duo
and i think that my poor G5 does not enjoy the same optimization software

Hi

The algorithm Usedom today for the GW search is different from the one used back several years ago, it's quite possible (highly likely even) that the relative performance of the intel and power apps are very different now.

And yes, the core2 and core-I CPUs are much, much faster per clock per core than the P4.

CU
HB

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