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Cpu upgrade question - Seti related

S

sduguid

Senior member
I'm going to buy a new processor for a friend's system and the main criteria is which one will perform better when crunching WU's.
I'm looking in the range of probably 900mhz to 1.1ghz..

I will be putting in an ECS K7S5A and using the old PC133 from the old motherboard.

At what speed of Duron did they start using the new Morgan core? Does it overlap any? What advantages, if any does this new core have for Seti?

Would it be better to get, for example, a 900 mhz T-bird as opposed to a 1 or 1.1gig Duron?

Any help would be appreciated.

 
I don't know for sure but I think they started using Morgan at 1GHz. Sorry I can't help much but here is a bump for you.
 
Thanks Baldy18! 🙂

I have figured out,definitely, that the 1.0 ghz and above Durons have the Morgan core - I saw an email from an AMD tech stating that this is the case. So, you were right...

My other questions still stand, though. 😛

 
Here, this might help 🙂

Seti Timer - A little web page to help you figure out WU times for combinations of CPU type and speed, memory speed and angle range (of the WU).

Give it a shot!

Thunderbird (non DDR (using PC133 memory right?)) - about 7 hours

Unfortunately it doesnt include any version of the Duron. 🙁
 
sduguid, I have an ECS K7S5A with DDR memory and first put a Duron 750 on it. The chip was a pull from another upgrade. The results sucked! After a month I upgraded it to the XP1600+. It now does a WU in ~3h45m. I am very please with it for a $57 board.

So, I would suggest you put any of the XP line on the board. They are relativily cheap for the performance. The XP 1500+ is $99 on Pricewatch. Your friend could always upgrade to DDR memory at a later date.


 
Unfortunately, I'm on a tight budget. 🙁

I think I'll try a 1gig Duron and see how the Morgan core performs with Seti.

I think there'll be more money sunk into the system in a few months, at which time I'll throw in a .13 micron Athlon and see what happens! 😀

JWMiddleton,

I've got three of those boards with XP 1600+'s and I must agree - they ROCK with Seti. I get about the same averages. 🙂🙂

I had heard of lots of problems with the ECS boards but the three I've put together have been rock solid and good performers for the money. I made two with Enermax 350W power supplies but I also made one with an ATX case and 300W PSU which cost $45 Canadian for the pair($28 US) and it is solid and stable. Maybe I just got lucky, though. 😛
 
OO OO OO

I know this one... 🙂

Seti likes a higher bus speed 🙂 go for a 266 bus <edit> :Q of course if the budget allows, and congratulations on your expected new arrival! hehe 😀
 
Yah, I know Seti likes high FSB, but would the additional 100 mhz of the 1 gig Duron(over the 900 mhz Thunderbird), as well as the optimizations of the Morgan core(hardware prefetching, etc...) be enough to make up the difference.

As I mentioned earlier, though, I think I'll likely go for the Duron and likely get my friend to upgrade it in a few months.

The way it works is that I am living part time at his place and I have convinced him to let me pay rent in computer parts instead of cash. It costs the same for me but I get more WU's out o the deal 😀

I realize now that I am truly addicted to stats! 😛
 
the morgan core has hardware prefetch, but due to the constraints of 133MHz sdram it probably won't help seti out very much. drop the multiplier and run it at 266, duron cores don't have the bridges cut with a saw. the latency involved in making 100 mhz FSB fit into a 133 MHz memory bus is horrendous.
 
Well, here's my personal experience.
I have a TBird 1Ghz @ 1GHz, and it's averaging ~7 hr/wu on a MSI K7T Turbo using 512MB Crucial CAS2.
I also have a Celery 850/128MB cache @ 933, and it's averaging ~9 hr/wu on a Generic Taiwan MoBo using 512 CompUSA CAS3.

So,

A bit more info. I had thought about getting a duron for the kids machine, but at the time, I got a good deal on this MoBo, and it works
fine, so I went this way. I'm thinking about updating the TBird to an XP 1800+, but I don't know if I want to spend the bucks right now.
 
I have to admit I've been a little spoiled with the XP 1600's that I've had crunching lately. 🙂 I'm thinking maybe I will just cough up the extra $85 Canadian and put an XP into the system.

Why not? 😀
 
The main difference between the Duron and the Athlon is the cache size, regardless of core optimizations or even FSB. Thus when comparing same speed Durons and Athlons, the Athlon (eg., XP) will always crunch faster (similar to the PIII crunching faster than the Celly II at the same speed).
 
sduguid, If it will help you I will sell you a 750 Duron for $25 US and that includes postage (basic UPS.) Then you can save your pennies for something else! It was doing a WU in about 8.5 hours.
 
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