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Earthworm Jim

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  1. Hi Guys, I build a computer over lockdown to run some calculations on a few months ago. It’s a number cruncher hence the 8 core CPU paired with a £40 graphics card. This was my first time building my own machine and everything worked perfectly initially. However, I left it alone in my room for like 2 weeks and now the thing wont even turn on. Usually there is like and orange backlight when it is plugged in and now that’s not even showing. No life whatsoever. I had a previous laptop break in the same way, when I took it to a repair guy, he said one of the repair ports shorted the mother board? and the supplier said that my HDMI cable caused the problem? Initially I thought he was just saying this to get out of refunding me but now that it’s happened twice, I’m not so sure. Have you guys heard anything like that? The HDMI damaging the motherboard? Or have I poorly selected parts and that has buggered it somehow Any help would be appreciated. Part list below. Operating system: Centos 8 (Linux) Parts List: ADMI CPU Motherboard Upgrade Bundle: AMD Ryzen 7 2700X 8 Core 4.3GHz with AMD Wraith Cooler, ASUS Prime B450-Plus AM4 ATX, 32GB LPX 3000MHz DDR4 RAM Corsair CP-9020133-UK TX550M 550 W 80+ Gold Power Supply Unit, Black ASUS GT710-SL-2GD5 GeForce GT 710 2 GB DDR5 Graphics with Passive 0 dB Efficient Cooling WD 4 TB Desktop Hard Drive - Blue Samsung 860 QVO 1 TB SATA 2.5 Inch Internal Solid State Drive (SSD) (MZ-76Q1T0) Ubit AC 1200Mbps Bluetooth WiFi Card,Wireless WiFi PCIe Network Adapter Card 5GHz/2.4GHz Dual Band PCI Express Network Card with Bluetooth 4.2 and 2× Corsair Carbide Series SPEC-05 Mid-Tower Gaming Case/Chassis - Black
  2. Hi all, I Hope you are all remaining reasonably sane during the lockdown. I would like some advice. I want to build a computer for molecular dynamics simulations (CFD capability would also be nice but not required). This is partly for fun, but It also has the potential to make my life a lot easier. I would like to build a machine that can blast through numeric calculations as its primary function. My last computer build was a gaming rig I built about 5-6 years ago. But for this machine I basically want the best CPU possible with a budget machine built around it. The software packages I use run calculations in parallel, so for this application a high number of cores/threads is preferable to clock speed (or so I have been told). No gaming. No rendering. Just a pure number cruncher. I have been looking at decent CPUs and some are stunningly cheap for what they are. Such as the AMD 1st Gen RYZEN Threadripper 1920X and AMD RYZEN 7 2700 8-Core. I basically would like to build a computer around a good multi-core processor. However, I obviously don’t want to waste money on things like a fancy graphics card etc. if it’s primarily a number cruncher. Graphics card – Just how cheap can I go with my graphics card. Theoretically I shouldn’t need one? And I am planning on accessing this machine remotely most of the time anyway. Or will I miss out on so called “GPU Acceleration”? Power Supply – What kind of power supply will I need? can I go quite low? Thermals – What kind of cooling will in need, will a fan be ok? or would I need something more substantial? Will there be any issues running Linux (CentOS 8 ) on this system? If anyone has suggestions/experience building a rig like this and can give any advice, guidance or suggested resources showing similar builds I could look at would be greatly appreciated. Sorry for the long post and thanks.
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