Running Seti classic on new P4 2M cache cpu - need advice on OC

[Wiz]

I've got this thread in CPU/OC - looking for info & advice.

http://forums.anandtech.com/messageview...atid=28&threadid=1542495&enterthread=y

Thanks!

Oh, currently doing seti WU's in about 1.25 hr each

 

[Assimilator1]

Odd that Intel don't list it in there S spec list!

How about looking at the specs of the only 2MB P4 listed?

 

[Wiz]

yeah, there's a 3.4ghz with 2M cache there...

guess this cpu is very, very new

I suppose I could set the memory real slow & see what the cpu will clock up to - I just wanted some advice hopefully from paeople who have had one of these before me.
Maybe I'm the first on AT to get one???

 

[Wiz]

Well, I lowered the mem to 320 & upped the FSB to 240 for a 3.6ghz cpu.
I'll see if it runs good like this for a while before trying anything higher.

 

[Wiz]

Ah heck, who can wait...

I upped the FSB to 250 for a cpu speed of 3.75ghz.

Running two instances of seti right now. So far, so good.

CPUZ reports my memory is running @ 200mhz (400 ddr) due to a FSB:mem ratio of 5:4

I'll let 'er burn in here for a while.

 

[mrwizer]

Isnt that running hot? Especially with stock cooling?

 

[Wiz]

the 775 chips come with a great HSF - at least this one did

It's running at about what is expected for heat, I'll see how it did overnight.

 

[Wiz]

The guys over on CPU/OC suggested this little proggy called Throttlewatch.

http://www.panopsys.com/throttlewatch.php

It watches for throttling on the P4 due to overheating.

So I ran it, & found that at 3.75ghz I was getting 30 - 40% TM1 throttling.

This was obviously not doing my seti processes any good so I clocked it down to 3.4ghz, in increments - @ 3.6 it was still throttling 10 - 20% & @ 3.5ghz it was throttling 0 - 10%,

On the upside I can set my memory / fsb ratio @ 1:1 now so my ram is running 454mhz ddr. I'll let it cook here for a while & see what kind of performance she gives.

 

[Smoke]

Like dragging a fly in front of a big old trout ........ temptation!

My rather large home office is also my media room so I've got all PowerEdge systems running primarily for the low noise level associated with those models. One of these days I may try to build another OCer but I may have to try water cooling or something that will preserve my peace and quite. Got to hear that surround sound you know.

Glad to see you are still enjoying yourself there, Wiz.

:thumbsup:

 

[Wiz]

Thanks Greg, yes I am!

I upgraded primarily for better HTPC performance. You know those widescreen DVD's only come with 720 x 480 resolution??? Did you know you can use software to get your computer to enhance this? Like 2.5x so it ouputs better than a line doubler?
Of course this takes some processor power, & my little AMD 1700+ wasn't cutting it even overclocked.

In fact even @ 1.1x it was hitting 100% cpu & causing stutters.
Now @ 2.5x it's smooth as silk. I watched Ladder 49 last night on my 92" screen in my newly made Home Theater.

I'll post pics as soon as I can figure out how to get my digital camera to take a wide enough shot to get it all in there!
Also, I need to clean it all up - hide the wiring & get my permanent ceiling mount up for the projector.

BTW I found a killer deal on the Home Theater projector with a free 92" screen. I did my research this time, went with one highly recommended at the AVS forums.

 

[Assimilator1]

Nice!

With a Prescot(?) P4 furnace in it I take it you've got the HTPC in another room

 

[Wiz]

I've got one word for you: Sennheiser Headphones

Seriously, I have all my computers in this one room and even though it's a 500 square foot room I just can't expect to be able to control the sound in here at this time.
Maybe later, when things are vastly different - but not now.

 

[mrwizer]

Originally posted by: Wiz
The guys over on CPU/OC suggested this little proggy called Throttlewatch.

http://www.panopsys.com/throttlewatch.php

It watches for throttling on the P4 due to overheating.

So I ran it, & found that at 3.75ghz I was getting 30 - 40% TM1 throttling.

This was obviously not doing my seti processes any good so I clocked it down to 3.4ghz, in increments - @ 3.6 it was still throttling 10 - 20% & @ 3.5ghz it was throttling 0 - 10%,

On the upside I can set my memory / fsb ratio @ 1:1 now so my ram is running 454mhz ddr. I'll let it cook here for a while & see what kind of performance she gives.

My next question was going to be throttling. Good to see you got it under control. And thanks for the link!

 

[Wiz]

I also lowered the voltage to the cpu & connected the other fans in the case. Now the temp is down to 52c running 2 instances of seti.

 

[Assimilator1]

heheh ,I assume their a good make of headphones

 

[Wiz]

Yes, Sennheiser makes great headphones. I have a pair of HD 280 Pro's that I like very much and also a pair of wireless HDR 30's.
Now looking into HDTV cable to plug into my projector - Comcast says it's only an extra $5 per month on their website, so that sounds like a good deal to me