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-   -   Mini PC's (https://www.mersenneforum.org/showthread.php?t=27476)

a1call 2022-01-09 06:04

Mini PC's
 
Just came across this for the 1st time. Seems to be good for Number-Crunching farms. Can rack up 16 cores for less than $1k. :smile:

I know Celeron is not particularly fast, but still 4 cores,

[url]https://www.amazon.ca/AWOW-AK34-Computer-Graphics-Bluetooth/dp/B07WZSNQNF/ref=asc_df_B07WZSNQNF/?tag=googleshopc0c-20&linkCode=df0&hvadid=335174691057&hvpos=&hvnetw=g&hvrand=12799352385341410852&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9000478&hvtargid=pla-827977050908&th=1[/url]

Any better (new) alternatives?

paulunderwood 2022-01-09 06:22

[QUOTE=a1call;597445]Just came across this for the 1st time. Seems to be good for Number-Crunching farms. Can rack up 16 cores for less than $1k. :smile:

I know Celeron is not particularly fast, but still 4 cores,

[url]https://www.amazon.ca/AWOW-AK34-Computer-Graphics-Bluetooth/dp/B07WZSNQNF/ref=asc_df_B07WZSNQNF/?tag=googleshopc0c-20&linkCode=df0&hvadid=335174691057&hvpos=&hvnetw=g&hvrand=12799352385341410852&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9000478&hvtargid=pla-827977050908&th=1[/url]

Any better (new) alternatives?[/QUOTE]

Not a wise choice for crunching large numbers. During heavy use heat dissipation would be a problem. The Celeron does not have AVX/AVX2.

a1call 2022-01-09 06:37

I have tried running Raspberry Pi's remotely in the freezer. It crashed occasionally but not always. I am tended to think it would have crashed regardless of where it was.
Would be willing to test one of these if I get a chance. Have no clue how would AVX/AVX2 affect processing. Would it be significantly slower for large numbers?

paulunderwood 2022-01-09 06:41

[QUOTE=a1call;597448]I have tried running Raspberry Pi's remotely in the freezer. It crashed occasionally but not always. I am tended to think it would have crashed regardless of where it was.
Would be willing to test one of these if I get a chance. Have no clue how would AVX/AVX2 affect processing. Would it be significantly slower for large numbers?[/QUOTE]

AVX2 is 2x faster (?). If you are looking for a bargain, a cheap system built around this [URL="https://www.amazon.com/Intel-i5-9400F-Desktop-Processor-Graphics/dp/B07MRCGQQ4/ref=sr_1_2?crid=3QOBCPFZJROM2&keywords=9100f&qid=1641710259&sprefix=9100f%2Caps%2C268&sr=8-2"]9400f chip[/URL] would be okay.

a1call 2022-01-09 06:46

[QUOTE=paulunderwood;597449]AVX2 is 2x faster (?). If you are looking for a bargain, a cheap system built around this [URL="https://www.amazon.com/Intel-i5-9400F-Desktop-Processor-Graphics/dp/B07MRCGQQ4/ref=sr_1_2?crid=3QOBCPFZJROM2&keywords=9100f&qid=1641710259&sprefix=9100f%2Caps%2C268&sr=8-2"]9400f chip[/URL] would be okay.[/QUOTE]
That's a good price. Thanks, will look for a ready made minimal setup for that processor. The last (only) system I put together myself costed $2k, CPU not included. :smile:

paulunderwood 2022-01-09 06:53

This [URL="https://www.amazon.com/Intel-i5-10400F-Desktop-Processor-Graphics/dp/B086MHSTWN/ref=pd_sbs_6/143-5814532-8549340?pd_rd_w=DAu7r&pf_rd_p=3676f086-9496-4fd7-8490-77cf7f43f846&pf_rd_r=G7E1KH810670J8T25BR6&pd_rd_r=e9be8981-db77-4986-84a5-3a7bce29a54d&pd_rd_wg=AQK3y&pd_rd_i=B086MHSTWN&psc=1"]10400f [/URL]is even cheaper -- will need a cheap GPU or run it headless. When building make sure you get a compatible motherboard.

a1call 2022-01-09 06:58

[QUOTE=paulunderwood;597451]This [URL="https://www.amazon.com/Intel-i5-10400F-Desktop-Processor-Graphics/dp/B086MHSTWN/ref=pd_sbs_6/143-5814532-8549340?pd_rd_w=DAu7r&pf_rd_p=3676f086-9496-4fd7-8490-77cf7f43f846&pf_rd_r=G7E1KH810670J8T25BR6&pd_rd_r=e9be8981-db77-4986-84a5-3a7bce29a54d&pd_rd_wg=AQK3y&pd_rd_i=B086MHSTWN&psc=1"]10400f [/URL]is even cheaper -- will need a cheap GPU or run it headless. When building make sure you get a compatible motherboard.[/QUOTE]

Thank you very much for your expertise, sir. Will see if I can get a budget system configured, using the Newegg configurator. :smile:

kriesel 2022-01-09 07:06

[QUOTE=a1call;597448]Have no clue how would AVX/AVX2 affect processing. Would it be significantly slower for large numbers?[/QUOTE]If running mprime / prime95, maximum fft length, and thereby maximum exponent, varies by available instruction set. SSE2 can go to ~595M exponent, so would not affect wavefront or 100Mdigit. [URL]https://www.mersenneforum.org/showpost.php?p=546374&postcount=8[/URL]
Mlucas would not be so restricted.
Performance would be affected.

a1call 2022-01-09 07:26

I know most people are interested in Prime95 & GIMPS. But personally I only use Pari-gp and PFGW. Even at 1/2 speed, if the price is way less than 1/2 of an equivalent PC, it might be interesting to me. Alas I have no disposable time for any of that right now. [B]Retirement now, Retirement now.[/B] :smile:

[YOUTUBE]LW_s6EqOxqY[/YOUTUBE]

LaurV 2022-01-09 08:30

Any way you do, if you have access to cheap electricity, you will get A LOT better with second hand xeons, people discarded wagons of them after spectre-related bugs came to light (practically, you could get them for free, or even get paid to get them), and clever Chinese entrepreneurs made special (new) mobos for them, just to sell them, and the memories they had stocks. So, you can get a very cheap system with a lot of cores and a lot of processing power, I mean A LOT, of which only the CPU and the memories are second hand, everything else is brand new, including the mobo, ssd, etc. The downside is the fact that the business is a bit risky, you won't get any warranty in the most of the cases, and the system itself, even if everything works perfect, it will be quite power hungry.

I posted links in the past (I think, in Xyzzy's hardware thread). Just go to aliespress and search for "x79 combo", or "x99 combo", or just "motherboard set", sort them by price, descending, and stop where your budget limit is...

a1call 2022-01-09 08:49

Interesting, will check that out. Thanks. :smile:


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