And why are Prescott Pentiums so cheap?

anandtech review
hardwareanalysis review
digit-life review

I'm running a P4 2.8 Ghz CPU with Hyper-Threading and 800 FSB. I average 3hr 43min per WU and crunch 2 WUs at the same time because of the hyper-threading. It makes a 1 CPU PC a virtual dual CPU PC. I used to be able to upload/download 2 WUs at the same time that 2 WUs were being crunched. They changed something in v4.05 BOINC that no preempts the crunching if BOINC has to dial-up for uploads or updating. If I'm already online, the crunching does not get preempted.

Anyway, you will need to have a motherboard that is compatible with the above mentioned CPU.

Damn! I just checked and I have been online for over 5.5 hours. It's time for a nap, me thinks.... L8R....

---

Rick A. - BOINCing right along now.... It can only get better! </p><p>"There is no fate but that which we make for ourselves."</p><p> Live Long and Prosper....</p>

my P4 3.2 on and I875 Mobo, with Dual Channel at 2.0 2 2 7 did two WUs in 3:25, not Bad i think.

S@h Berkeley's Staff Friends Club ©

Don't know about the Prescotts, but...

IMHO

Go AMD - Athlon 64, as big as possible - more memory the better...

I've got all cpu's in my pharm, and find the AMD does chew thru wu's faster (overall, and with time)...

Just one omniscient beings opinion...

'-~



"Nipple Free Since 08/24/04"

(Free Marc Emery)

And the Prescott take the cake. P4 3.0E Prescott running at
3450MHz 230x15 Corsair XL 2-3-3-6 at DDR 460.
2 WUs in 2hr 55mins.

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One thing that will make the biggest difference for seti@home (not sure about other DC projects) is the L2 cache. I see things like Siran above saying it takes his 3 GHz P4 4 hours per 2 work units and then I look at my measly 1.3 GHz Pentium-M laptop that does 1 work unit in about 2.5 hours while taking up about 1/4 the power and think to myself 'what the hell did Intel do to the good engineers when they designed the P4???'. And while the Penium-M is based on the P3 core which was MUCH more efficient than the P4 core, it also has a lot to do with the 1 MB of L2 cache on the Penium-M. I don't have the cache settings of all the current processors memorized but 'bigger is better' as they say. Of course you also pay dearly for it.

Really, there is no 'best CPU' in my eyes. I get what I can afford and what will meet my computing needs. Then I put BOINC on it.



-------------------------------------------
- A member of The Knights Who Say NI!
Possibly the best stats site in the universe:
http://boinc-kwsn.no-ip.info

i just was answering somethink to this :)

first AMD64 3.200+ (Newcastle) running at 11 x 215 with Twinmos BH5 Chips, 2:10 for every WU

second P4 3.2C running at 16 x 220 at 2.5 2 3 8 also with the good Twinmos BH5 Chips = 3520, for two WUs about 3:00 hours.

S@h Berkeley's Staff Friends Club ©

> One thing that will make the biggest difference for seti@home (not sure about
> other DC projects) is the L2 cache. I see things like Siran above saying it
> takes his 3 GHz P4 4 hours per 2 work units and then I look at my measly 1.3
> GHz Pentium-M laptop that does 1 work unit in about 2.5 hours while taking up
> about 1/4 the power and think to myself 'what the hell did Intel do to the
> good engineers when they designed the P4???'. And while the Penium-M is based
> on the P3 core which was MUCH more efficient than the P4 core, it also has a
> lot to do with the 1 MB of L2 cache on the Penium-M. I don't have the cache
> settings of all the current processors memorized but 'bigger is better' as
> they say. Of course you also pay dearly for it.
>
> Really, there is no 'best CPU' in my eyes. I get what I can afford and what
> will meet my computing needs. Then I put BOINC on it.
>


> -------------------------------------------
> - A member of The Knights Who Say NI!
> Possibly the best stats site in the universe:

Amen from the choir...

I've been running several 1.5's, and they are speedy little chips...

Although, they max out about par with a P4 2.8 - not the snappiest...

You are bang on about their relative performance vs power consumed - smokin...

'-~



"Nipple Free Since 08/24/04"

(Free Marc Emery)

> And the Prescott take the cake. P4 3.0E Prescott running at
> 3450MHz 230x15 Corsair XL 2-3-3-6 at DDR 460.
> 2 WUs in 2hr 55mins.
>

I love it when people bring pictures...

Nice...

8-)

'-~



"Nipple Free Since 08/24/04"

(Free Marc Emery)

> One thing that will make the biggest difference for seti@home (not sure about
> other DC projects) is the L2 cache. I see things like Siran above saying it
> takes his 3 GHz P4 4 hours per 2 work units and then I look at my measly 1.3
> GHz Pentium-M laptop that does 1 work unit in about 2.5 hours while taking up
> about 1/4 the power and think to myself 'what the hell did Intel do to the
> good engineers when they designed the P4???'. And while the Penium-M is based
> on the P3 core which was MUCH more efficient than the P4 core, it also has a
> lot to do with the 1 MB of L2 cache on the Penium-M. I don't have the cache
> settings of all the current processors memorized but 'bigger is better' as
> they say. Of course you also pay dearly for it.
>
> Really, there is no 'best CPU' in my eyes. I get what I can afford and what
> will meet my computing needs. Then I put BOINC on it.
>


> -------------------------------------------
> - A member of The Knights Who Say NI!
>

My P4 has 1meg L2 cache as well. What gives? Seems my P4 should cut your time well in half, at least. Better check my BIOS settings, see if something is amiss.... L8R....

---

Rick A. - BOINCing right along now.... It can only get better! </p><p>"There is no fate but that which we make for ourselves."</p><p> Live Long and Prosper....</p>

I have read in a Mac forum that the dual 2 GHz G5
was averaging around 19 WU per day. I don't know
if it's true but if it is I wonder how the dual
2.5 GHz is doing. Even if it's not true the Power
MAC G5 is a serious machine.

My poor low end eMAC 800 MHz average 2.5 per day...
I guess The P4 HT extreme with 2 MB caches is a
serious cruncher too. Or a Dual Xeon. Quad Itanium !

if you have the money, a Dual Xeons is not Bad, look at the TOP computers

http://setiweb.ssl.berkeley.edu/top_hosts.php

S@h Berkeley's Staff Friends Club ©

I haven't done any sort of objective analysis but I feel that if bang for the $$$ is a factor it's hard to beat the cheaper AMD XP chips. I've been able to buy Thorton or Thouroghbred AMD XP 2000+ CPUs w/o fans here for about under 32USD. Each one so far will clock up as an AMD XP 2400+ using one stick of PC3200 DDR400 RAM in 56USD Gigabyte mobos. The Barton core AMD XP 2500+s all seem to handle FSBs that'll make them XP 3200s on a bit more expensive (74USD)dual channel mobos. Pretty cheap for the amount of crunching power you get. Glancing at the WORK tab on a '2500/3200' box I see around 2:30 per W/U with it also doing some email, web surfing, etc. The '2000/2400' boxes are pretty much crunchers and are taking about 3:15 per SETI W/U. Both of these set ups will clock a bit higher but are back off a notch or two for stability and in the case of the '2500/3200' to allow heavy graphics games to be played on it.

These boxes are all running multiple projects so there may be some task switching overhead in here also.

Just my thoughts on $$$ per W/U. Hope it helps. Skip

Prescott 2.8 1mb cache 2 x kingston 256 400, intel MB (build in vga), windows2000

returning 2 WUs about every 3:35

the Prescott 2.8 is relatively cheap in switzerland and the mem was 33% off.

still running with original cooler (will change, but right now shortness on cpu cooler)

while crunching, seeing cpu temperature 67 -68-66-69 degree Cesius


comparing to the 3.00 GHz, the temp is much higher, so far only got hight temperatures form the AMD boxes

What are your values/experience

friendly ric

>
> while crunching, seeing cpu temperature 67 -68-66-69 degree Cesius
>
whoa! those are some high temps! my athlon xp 2000+ never gets above 54 celsius (and i cringe whenever i see it get that high...) most of the time it crunches at around 50 C. you should really think about a new cooler...

and i thought amd were supposed to be hotter than intel... lol

> >
> > while crunching, seeing cpu temperature 67 -68-66-69 degree Cesius
> >
> whoa! those are some high temps! my athlon xp 2000+ never gets above 54
> celsius (and i cringe whenever i see it get that high...) most of the time it
> crunches at around 50 C. you should really think about a new cooler...
>
> and i thought amd were supposed to be hotter than intel... lol
>

Actually, those temps are closer to the norm for those prescott's. That is why
I have stayed with the Northwood core. My 2.8C HT system temps average about 40C
and crunches about 16 wu's a day.

> <img> src="http://boinc.mundayweb.com/seti2/stats.php?userID=827&trans=off">
>

I've got a "M/B,IMPERIAL-GLVE(EMA):845GL(B1),W/LAN 2095"
So, I think I'm limited to the 400mhz FSB.

User manual:
http://www.e4allinc.info/dir3/phfilesz/manuals/IM845GL.zip

So, I think I can take out the Celeron, and put in a P4.

I'm thinking about trying a P4 so

Prescott Vs Northwood

I know Prescott run hot and are power hungry, but does the 1 MB of L2 cache on the Prescott help much with Seti? Does the Prescott overclock much better?

Cheers


Ps. My Best Cruncher is a Dual with Mobile Bartons @ 2400 Mhz, 2 Normal Work Units in 2:50 It keeps up with the Dual Xeons for a lot less money.


[url=http://acidtrax.net/forum/index.php]
<a>

I have a 2.8 HT Prescott, 1 Meg L2 Cache, 800Mhz FSB runs at 57 to 59 C while crunching seti. Still using the fan and heat sink that came with it. Thinking of upgrading heat sink and fan to drop temp a few degrees.

But then again winter is coming and it will keep my feet warm :).

I only run 1 wu at a time takes about 2:50 to complete using 50% CPU.

If i run 2 at a time CPU jumps to 100% usage and I dont want to find a molten puddle at the bottom of my case in the morning :0. If I can get the temp down 10 degrees then ill start 2 at a time.

as for overclocking, The box says 3.6Mhz max i havnt tried it "yet" but I think at that speed it would need to be in a fridge or you could heat your house with it.