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Thread: Low Cost Crunching with Celeron j1900 |
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Thread Status: Active Total posts in this thread: 9
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges: 
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Celeron j1900 4cores @ 2.4 fully loaded build cost when I got this was $89 after rebate for board cpu and 4GB of ddr3l 1333. TDP is 10w. it has x25 ssd connected
----------------------------------------Kill-a-Watt clone gives 17.5w used in running Fully loaded with FAHV I get the following daily numbers: points, _____ results 12,888 - ____ _ 92 12,602 - ____ _ 90 12,952 - ____ _ 90 12,853 - ____ _ 88 13,089 - ____ _ 87 13,388 - ____ _ 91 11,723 - ____ _ 87 One week = 89,495 points (12785 Boinc) and 625 FAHV wu's Average daily then is 12,785 pts (1826 Boinc) http://stats.free-dc.org/stats.php?page=host&proj=bwcg&hostid=3302786 Based on the 17.5 watts I measured and assuming you can achieve 90% efficiency at least selecting the best method of power supply, power draw is then 19.45w at the wall, ergo this rig will run for 51.41 hours using 1Kw/h. In 51.41 hours running Vina it achieved 27,386 points approx. or 3,912 boinc points. For comparison 1Kw/h used by my SB 32 thread machine gets 21,932 (3,133 Boinc) in 3.75 hours running costs should be in the order of 14Kw/h per month or 170Kw/h per year points should be in the order of 383,550 (54,792 Boinc) per month and 4,666,500 (666,646 Boinc) per year We will not know the full story until I have run a week or so of MCM but so far this looks pretty reasonable in terms of efficiency  [Edit 2 times, last edit by OldChap at May 21, 2015 6:38:03 PM] |
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smashrvmco@gmail.com
Cruncher United States Joined: Sep 30, 2012 Post Count: 7 Status: Offline Project Badges: 
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Had to retire one of my old laptops this week, would this setup work off of a PicoPSU or is there a better power option? Also can these j1900 motherboards run off of a usb memory stick instead of ssd?
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
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It would run off a pico psu I am sure but I know nothing of the efficiency of such.
----------------------------------------If you had another rig already running then a 24pin ATX "Y" cable might allow you to piggyback on to that psu. There are 4 usb ports at rear so no reason not to use a stick instead of a drive or .....maybe that old laptop drive?? [Edit 1 times, last edit by OldChap at May 19, 2015 4:40:24 PM] |
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
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At the end of 2 weeks the points have settled to an average of 12669 (1809) ppd and on this project 3 days 19 hours per day
----------------------------------------For the record:  Moving on to MCM now and to be honest I am not holding my breath [Edit 3 times, last edit by OldChap at May 24, 2015 12:31:26 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I now realize I could have bought five of these motherboards with preassembled J1900 processors, five 2x2GB DDR3, four ATX24 splitter cables and one 450W PSU, for the same money I paid for one of my used Z600 dual processor workstations. The points would have been similar, but the difference is I would only have needed 100W, compared to the 235W I use now. They would have paid for them selves in about 28 months. Problem is, I would need 10 of these to replace two of my workstations. I think that's too many to deal with.
So I'm waiting to see where the D-1540 price will end up when more stores begin to sell it. Here is a link you might find interesting. It seems the price for a D-1540 motherboard combo is already dropping. And here they test a D-1540 system that has 2 HDDs and 5 SSDs, all idle, with CPU at full load, and come up with 70W. |
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
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That D-1540 is a costly setup but frugal to run rig. I expect that turning off certain features like the 10GBe and finding the most efficient psu to run these in multiples might make it even cheaper (Think 7 of these on a Seasonic p860) For that you would need a bottomless pit for a wallet. Based on the price of the cpu, the only way the purchase price is coming down is when another manufacturer builds a less well spec'd board.
----------------------------------------I wonder what price you might get for those Workstations now  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
How many Watts do you think your J1900 setup would need in order to run CEP2 on all 4 cores, with 2x8GB RAM and the BOINC data file inside a RAMdisk, and a more or less idle SSD? I'm guessing more than 20W?
Have you made any changes in in the board and processor that resulted in these Watt and Bppd numbers? Here is another J1900 and it has only 1409 Bppd, but both have similar Bp/W. I think it's amazing that this cheap processor delivers 25% more Bp/kWh than a Sandy Bridge processor. |
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
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Judging from his 15w 4 threads and 1409 points I would guess he is running a non Vina Project, possibly a different board and maybe these meters are not that accurate
----------------------------------------Currently running @ 2.4 but now with 2 ddr3L sticks (8GB) (made no difference to performance that I can tell) on MCM and pulling 17.3watts SSD should be low use as only checkpointing every hour Just the first 6 valid results suggest a ppd average of 1413 My 16c/32t SB duallie is watercooled pulls 240w and gets 19600ppd vina and about 14K+ otherwise on Linux Mint so 81.8ppw and 58.3ppw respectively Not a member there but mine would read: OldChap| Seasonic 1000p | 2*xeon e5 2650 @2.4| 1 SSD | 240W @ 100% | 19600 on VINA | 81.89 | Linux Mint 17 | Watercooled (d5) 4 fans 24/7 crunching [Edit 1 times, last edit by OldChap at May 25, 2015 1:31:03 PM] |
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OldChap
Veteran Cruncher UK Joined: Jun 5, 2009 Post Count: 978 Status: Offline Project Badges:
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I let the Celeron j1900 settle, then took an average over the last 17 days running MCM on mint 17.1:
----------------------------------------9309 wcg points per day 1330 Boinc points per day approx 3.86 days per day due to inefficiencies |
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