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White powdery mark on motherboard

SomeNormalHuman
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About a week and a half ago I built my first PC and just last night I discovered this white mark on what I believe to be part of the motherboard vrm or some sort of power delivery (it looks like a small black plastic block, just above a pair of silver capacitors to the right of my ram slots). I'll also post an image for reference.

 

My PC still seems to run fine for now, just moments before I was benchmarking. According to MSI Afterburner the vrm temperature did not go past 40° while doing so. I mostly want to know if this is anything bad enough to rma the board.

 

The motherboard in question is an ASRock x570 phantom gaming 4, and I am running it with a Ryzen 5 3600x on stock cooling, Team T-Force Vulcan Z 3200 RAM, a reference  XFX RX 5700, a 256gb Sabrent Rocket SSD as a boot drive, a 2tb Seagate Barracuda HDD, an Intel A200 Wifi 6 M.2 card, and an EVGA 700 GD power supply. I'm not overclocking on it save for using XMP profile settings on the ram.

IMG_20191210_054853.jpg

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soldering flux, nothing to worry about

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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