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Does my R7 1700 have a defective memory controller?

DDebbil
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I've been trying to set up a Ryzen-based system, but having all kinds of trouble with the RAM. The first motherboard I had (MSI X370 Gaming Plus) wouldn't run any memory settings other than 'auto' (including manually setting 2133MHz), with any of the three RAM kits I have, including one that's on the QVL. Thinking it was some weird motherboard issue, I bought an Aorus X370 Gaming 5, which worked OK for about 24 hours before that has also slipped into the same behaviour - no memory settings other than 'auto', including manually setting the same clock as auto, will boot. Both motherboards are running the latest BIOS, and all other settings are stock. The only thing in common is the CPU. Does my CPU have a defective memory controller?

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Reset CMOS before you tweak the memory settings, and make sure you update the BIOS to their latest revision.

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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Both motherboards have the latest BIOS. Resetting the BIOS prior to changing RAM settings didn't help - I still cannot input anything but 'auto'.

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