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RollinLower

disabling the OC on my CPU also disables a RAM channel?

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Posted · Original PosterOP

alright, so there is something weird going on with my CPU.

 

first of all, relevant system specs:

 

AMD Threadripper 1950X @3.75GH 1.175V

G-Skill Trident Z Royal 3200Mhz 32GB in 4x8

Asrock X399M Taichi

 

the CPU is watercooled in the same loop as two RTX 2080's, but temps are fine. I also lapped the Threadripper, but it worked fine ever since, and shouldn't be the cause of the problems i now face.(i think?)

 

so with the F@H event coming up, i want my system to be as stable as possible for 24/7 operation.

(btw if you havn't already, sign up for the LTT Folding month now! we got prizes!)

this means that i want to diable the CPU overclock, so i can push the 2080's in the same loop a little higher. here is where the weird stuff happens tough. whenever i set the core multiplier back to 'auto', the system bootloops for a few minutes before booting into windows, but with only 3 memory channels working. i cannot for the life of me get channel C1 back online on stock clocks! it's only when i apply the overclock again that the memory channel comes back to life.

 

how could this happen?

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A CPU that refuses to go slow properly when asked to, must be an impulsive one.

 

did you disable overclock by clearing CMOS?


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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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Posted · Original PosterOP
3 minutes ago, Jurrunio said:

A CPU that refuses to go slow properly when asked to, must be an impulsive one.

 

did you disable overclock by clearing CMOS?

yep, a few times in BIOS but most recently by taking out the battery.

 

sadly didn;t help, double sad because i had fine-tuned fan profiles which are now gone. :(

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53 minutes ago, RollinLower said:

yep, a few times in BIOS but most recently by taking out the battery.

 

sadly didn;t help, double sad because i had fine-tuned fan profiles which are now gone. :(

Then just manually type in the default multipliers ? I hope you still remember those


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: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally 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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