will upside-down-ness cause problems?

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tech-wreck

tech-wreck

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Jan 8, 2014
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if i were to mount a motherboard horizontally to the underside of a desk (with the components hanging underneath but protected from knees), would that be a bad idea?
 
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T
Temps / airflow would bother me most with a non-case install. Cases are designed to ensure no dead spots for airflow. Upside down is less stressful then vertical when it comes to heatsinks on the CPU and video cards torquing the MB pcb.

It sounds like you have airflow covered. A lot of hot parts on the MB do not have temp monitoring and do not have anything active to cool them, so try to leave enough space (or drive enough ariflow) that you are sure your parts are running cool enough. (stock intel cooler will help you, it's designed to blow air down and across the MB rather than just in a stream above the MB like some aftermarket units).

re" "..exhaust out the back - i have a holesaw for that bit. .." Strongly suggest fans for...
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no, i have a box of components. there is a PC on the desk now, but it is 5mm too wide for the gap where the drawer should go. i'm leaving that one intact and chucking something together from parts found in the shed. don't ask me for any benchmark results 😉
i'd like to mount it inverted so it can pull in fresh air from below (there is a hole underneath the drawer) and exhaust out the back - i have a holesaw for that bit. the drawer will be shortened to fit.
 
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trying to clear some clutter. it'd be nice to have just the monitor on the desktop, and maybe a lamp.
 
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i have a volkswagen, i like maintenance nightmares 😉

the cooler is just a stock intel thing, i don't think that could fall off. the GPU... may have to fabricate something to keep it in place, there won't be a back panel to screw it to, and i don't think the slot clip on it's own will be sufficient.
 
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Temps / airflow would bother me most with a non-case install. Cases are designed to ensure no dead spots for airflow. Upside down is less stressful then vertical when it comes to heatsinks on the CPU and video cards torquing the MB pcb.

It sounds like you have airflow covered. A lot of hot parts on the MB do not have temp monitoring and do not have anything active to cool them, so try to leave enough space (or drive enough ariflow) that you are sure your parts are running cool enough. (stock intel cooler will help you, it's designed to blow air down and across the MB rather than just in a stream above the MB like some aftermarket units).

re" "..exhaust out the back - i have a holesaw for that bit. .." Strongly suggest fans for the exhaust. Holes will not do it.
 
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Solution
i have just had my mind changed for me by the postman, who just gave these to me:
8

so i'm going to remove the rear section completely, seal the front, and enlarge the opening underneath for two of those bad boys, with a layer of mesh covering the bottom...

airflow will not be a problem.
 
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made it fit. there was only room for a smaller 200mm fan, had to blag myself a mATX power supply, the one i had put aside for this was way too big, and the rest of the hardware is junk.

but it works, eventually :)

30jk4l0.jpg

 
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well now i'm back at square one. the parts i found in the shed although working were ancient and painfully slow. i ordered an adaptor so i could swap the mobo for a newer (well, less old) one from a dell with a busted psu. spent a good few hours fecking with it, only to find that it wont fire up. balls.
eventually i'll remove the hardware from the desk and test it again, but for now i have admitted defeat and put the dell which was on the desk before i started having ideas, back on the desk.
 
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Sorry your hardware was too slow. A Motherboad combo may give you what you want if you have a clean copy of windows (or are willing to run linux).

Intel Core i3-4150 CPU/Gigabyte GA-B85M-HD3 mATX MB/4GB DDR3 1600 Adata XPG V1 Memory Bundle $240. Tiger direct. http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=9162365&CatId=11496

A laptop is another option, it'll come with windows. Laoptop volumes are much higher than server volumes so the price is sometimes lower than the equivalent desktop PC. Example:

Toshiba - Satellite 15.6" Laptop - Intel Celeron - 4GB Memory - 500GB Hard Drive - $230 , best buy. Will be slow. An i3 notebook adds another $100. http://www.bestbuy.com/site/toshiba-satellite-15-6-laptop-intel-celeron-4gb-memory-500gb-hard-drive-jet-black/2326023.p?id=1219541315810&skuId=2326023
 
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if i had some spare cash i'd find some new parts and use them. i'm already balls deep in my next prototype, and that's going to vacuum up large amounts of money.
so, the budget for the desk build is approximately zero, but i'm awash with old parts i can reuse.
the last motherboard i tried is from an identical computer to the one on the desk, and that runs games fairly well for a ten year old business pc.
 
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