Seti@Home optimized science apps and information
Optimized Seti@Home apps => Discussion Forum => Topic started by: Fivestar Crashtest on 24 Feb 2007, 12:13:39 am
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I have seen Opteron guys talking about not filling all the sockets on their server boards and adding them as they could afford them.
So can you run a socket 771 board with just one socket filled and add another processor later?
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Hi Pam,
sure you can! It's not required that you fill all sockets.
My dad's Xeon server came with one CPU installed but an empty socket for a second one - as do many 2 socket systems. Should work fine.
HTH,
Simon.
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Thanks, Simon.
I made a shopping list for a dual 5310 with 4Gig memory and it came to under $2000. Not including drives or case, but I have drives. I guess I'd have to get a case that could take E-ATX. A dual 5310 was at No. 22 at Seti last night.
Then I thought, what if I could do a single 5320 and half the ram and add another processor and the rest of the ram later? And then I thought, what if I did a single 5355?(over $1200 for just the processor)! And then I saw the QX6700 was down to $970, and I already have a board that can take that. Maybe the price will drop a little more when the 45 nm processors come out in a few months.
I guess it might be safer to stick with equipment that doesn't need fb-dimms. That stuff is pricey! I thought, well, I must want to fill every slot, so I can get quad channel and I was picking the cheapest brand, and still coming up with $600 worth of ram. And what if one or two sticks was bad? That would be so frustrating.
Thanks for helping me think this over. ;)
Pam
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Pam,
I recommend a different route.
It still involves Xeons, but I'd advise you not to invest in DP ones unless you're after top spot in the rankings ;)
Why, you ask? There are single-socket quad-core S775 Xeons that fit in consumer motherboards and overclock better than the QX6700 - specifically, they can run higher FSB frequencies. AFAIK, they're also competitively priced, and the cost offset between a DP server class motherboard and a consumer/enthusiast single-socket one is pretty large. You can easily stuff 4 GB into those, as well. By the way, I'm thinking this will not be just a cruncher, since you stuffed it full of RAM it would not really need (for S@H, anyway :)).
The RAM will also be much cheaper, or for the same price, you could get stuff that's a lot quicker (DDR2-800 or 1066/1200 vs. FB-DDR2-667 or even slower).
I'll dig up a CPU model number for you.
<edit>
And this would be it -
http://processorfinder.intel.com/details.aspx?sSpec=SL9UP - Xeon 3220 UP. Priced below a QX6700, also runs at 2.4 GHz vs. 2.66 for the QX, but as I said, it's very overclockable. Get a robust after-market cooling solution and a quality OC-friendly motherboard for the price difference; you will be glad you did. People have reached 3.4 GHz with this processor pretty easily, and with sky-high FSBs, which make them fly.
This review (http://www.theinquirer.net/default.aspx?article=37821) may also be of interest to you.
</edit>
HTH,
Simon.
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Simon:
Thanks, Simon, that is very sane advice. That 3220 is going to be some cruncher!
I've been laboring under the assumption that one needs 512 mb/core, so that's why I said 4 Gig for the dual quad. Is that overkill?
Regards,
Pam
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Depends on what you want to do with it; for S@H crunching, you don't really need a lot of memory (28-65 MB/running task), for other projects, more RAM may be very beneficient.
It really is a question of purpose and budget. For dedicated S@H crunching, I'd go with 2x512MB sticks of as-quick-as-possible RAM, it'll be enough by far. Quality over quantity, memory bandwidth is important.
OTOH, 512MB/core for a workstation (not a dedicated cruncher) will yield good results, unless you want to do video editing/compositing or 3D rendering with large scenes. Then I'd consider 1GB/core.
Regards,
Simon.
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To revitalize your curiousity about Socket 771 Xeons... the 5310 series of chips is hitting new price lows currently.
$352 for the 1.6Ghz Quad Core.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819117112
Remember these cpus are easily overclocked to 1333FSB. Here is the 2CPU.com forum thread discussing how to do this.
http://forums.2cpu.com/showthread.php?t=77937
After you hit 2.0Ghz... you should be able to hit 2.4Ghz on air.
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Gee, a 5310 is at #15 today at Seti running STOCK!
SUPERMICRO MBD-X7DAL-E-O Dual Socket 771 Intel 5000X ATX Server Motherboard - Retail
In Stock $389.99 $389.99
ENERMAX Liberty ELT620AWT ATX12V 620W Power Supply - Retail
In Stock
Mail-in Rebate
$169.99 -$20.00 Instant $149.99
Intel Xeon E5310 Clovertown 1.6GHz Socket 771 Active or 1U Processor Model BX80563E5310A - Retail
In Stock
$352.00 $704.00
CORSAIR 1GB 240-Pin DDR2 FB-DIMM DDR2 667 (PC2 5300) ECC Fully Buffered Server Memory Model CM72FB1024-667 - Retail
In Stock
$134.99 $539.96
Subtotal: $1,783.94
I read a review somewhere that 620 W was plenty to run two of these processors. I think if I built this, the poorest performer in the farm would have to go and that would be the FX-60. The the drives and video card and Tsunami dream case the FX-60 are in now would go to this. I guess if I got rid of the newest Core 2 duo, I'd could use the Liberty I have on it now....
I know, I know, better single socket Xeons that overclock better are just around the corner. Cheaper ram and motherboards. No scary pin mods. Fit on my Bad Axe 2 with a bios update. Why isn't NewEgg selling my Xeon 3210's? I've never heard of any of the merchants that are selling them now.
Happy Crunching,
Pam