As usage of a PC for resource-greedy calculations is work and hobby and lifestyle, the home PC has been under continuous upgrade for decades. Its applications include:

• chemoinformatic calculations of biomolecules, mainly single-thread
• software and database development (local web server and debugging environment for php, python, r, mysql)
• image design and processing workstation, including large multilayer hi-res images
• simple sound processing workstation
• platform for experiments with hardware and software
• complex documents: long bibliographies, database connections, multidimensional graphs, recursive tables, etc.
• regular home usage (films, music, documents, communication)

An attempt to have a reserve for performance and upgradability together with low noise and adequate price led to:

assembly 1

assembly 2

main unit

workplace

inside

Configuration

• CPU AMD Ryzen 9 3900 (x12) overclocked to 4.3 GHz, motherboard ASUS ROG Strix, chipset AMD X570.
• 32Gb of fast DDR4 (17-17-17-40) at 2.4 ÃÃö (tests: 37 Gb/s).
• system disk: NVMe Samsung Evo 970 (tests: 3 Gb/s, 0.03 ms latency), disk for swaps and caches: SSD Plextor M5P (0.5 Gb/s), main data disk: WD 10000 rpm (0.25 Gb/s), storage and backup disk: regular HDD.
• liquid cooling of CPU, mosfets, memory, north bridge, video chip; sequential water pipe with two auxilary radiators, Aquaero 6 XT controller. Fan and pump speed is controlled by thermal load; front panel RGB LED reflects water temperature.
• video (image only; not used in culculations): ATI Radeon 7700 (1 Gb).
• sound: Creative X-Fi Fatality with front panel.
• chassis: Thermaltake Level 10 (tuned), power supply: Thermaltake 750W, UPS: Crown 1500 VA.
• other devices: PCI-e USB 3.0, card reader, Blue-ray DVD-RW, mobile rack, audio commutator, MB internal devices (LAN, WiFi, BT).
• image periphery: Dell U2711 (IPS 27") monitor, ELP FullHD 60fps USB cam, Epson Perfection 2400 scanner, HP Color Laserjet M551 printer (A4).
• sound periphery: Creative Inspire 4.1 speakers (for everyday usage and films), Edifier BT1700 2.0 speakers (bedroom), Koss PortaPro headphones, desktop microphone, Behringer Xenix 802 4-channel mixer console, Yamaha RX-R520RDS amplifier + big sovjet AC-90 2.0 speakers.
• input periphery: Logitech wireless keyboard and mouse, USB-connector for drone R/C transmitter (Interlink), universal remote control, joystick (I do not know what for:) )

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