Hi!

I've bought a brand new AMD Athlon 64 3000+ Winchester cpu and replaced my old AMD Athlon XP 2000+. But I was verry surprised. The measured performance (whet & drystone) of the athlon 64 lies a lot under this of the old cpu.

I expected the athlon 64 cpu to be at least a little bit faster in processing the sh workunits. What is the problem of the new athlon 64 cpu?

Thx & Ciao, Tom

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Well my Athlon 64 3000 has a "recent average credit" of 360
my Athlon XP 2000 has a "recent average credit" of 160
The 64 will complete a wu in under 2 hours.
The XP will complete a wu in about 3 hours.
My XP 2800 will complete a wu in about 2hours 20 mins.

Check that your RAM is the correct speed and that your CMOS is configured correctly, multipliers and fsb settings, memory latencies, etc.

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I Think my performance related parameters are all adjusted correctly. I'm using a brand new asus a8n sli mainboard with nvidia 4 chipset which is automatic overclocking the system.

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Are your times to complete a WU slower? If not then I wouldnt worry about the benchmarks. If they are perhaps the automatic overclocking could be the problem?

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<a href="http://www.teampicard.net"><img src="http://boinc.mundayweb.com/seti2/stats.php?userID=2205&amp;trans=off"></a>

Yes the time needed to complete a wu from any project (climateprediction.net and seti) has increased. On seti from about 3:30 to about 7:50. Its verry suspicious I think.

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> Yes the time needed to complete a wu from any project (climateprediction.net
> and seti) has increased. On seti from about 3:30 to about 7:50. Its verry
> suspicious I think.
>

Do you need a BIOS update for your motherboard to work properly with the CPU? Could be it doesn't recognize it and is using the lowest settings for memory speed, CPU clock and all that.

Thx @all for your replies!

I solved this problem after getting a mind of the climateprediction.net message board. The problem was the activated amd cool'n'quiet technology in the bios. After turning this feature off and deinstalling the amd cool'n'quiet driver boinc speeds dramatically up. I'm awaiting the resulting speed of crunching and verry happy to see my amd working so fast.

Thx a lot for your replies!

Thx & Ciao, Tom

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Interesting, but still puzzling.
AMD's cool'n'quiet shouldn't kick in unless your temp's are getting too hot. That's what it's designed to do. If everything is working well, you should be able to run the system at 100% without cool'n'quiet kicking in to slow (and cool) things down. The fact that it's trying to do so should be of some concern. What temps does your Asus A8N motherboard report? Are you certain your heatsink is properly installed?

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cool'n'quite doesn't have effect on crunching. I have it installed/enabled (A64 3200+ Newcastle socket 754) and it activates only when I exit BOINC CC and CPU use goes down from 100% - then it put down frequency from 2200->1000MHz. But it happend very seldom because I always run BOINC and CPU use is 100%.
But this problem which was mentioned here comes from combination procesor_driver-BIOS-mobo_driver. There is quite often wrong temp/CPU use reporting and C'N'Q activates on this report, which is wrong.
But workaround is easy - BOINC is 100% CPU use which mean that cool'n'quite is cool when it is disabled.
It has nothing about heatsink, it only push processor multiplier down when processor is not use.
I'm getting ~2:20 times for SETI WU crunch, old processor, 1 memory channel, slow (CL2,5) DDR400 1Gig RAM. Not overclocked - CPDN was crushing, probably memory was reliable when I increased FSB.

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