F5F Stay Refreshed Hardware Desktop G.Skill Ripjaws V 4x16GB 4000MHz CL17 paired with an Asus X570-F Gaming.

G.Skill Ripjaws V 4x16GB 4000MHz CL17 paired with an Asus X570-F Gaming.

G.Skill Ripjaws V 4x16GB 4000MHz CL17 paired with an Asus X570-F Gaming.

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TommyTheLommy
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02-23-2019, 03:05 AM
#1
Hello, I recently installed a new motherboard, CPU, and RAM. Details: Motherboard – Asus ROG Strix X570-F Gaming (BIOS 4002, upgrade to 4021 soon); CPU – AMD Ryzen 9 5900X with Antec Mercury 360 AIO; Memory – G.Skill Ripjaws V 4000MHz CL17 4x16GB (two 8GB kits). These modules aren’t listed in the QVL for this board, which I overlooked before purchasing, and discovered problems when they failed to boot. I enabled the DOCP profile set to 4000MHz, but it didn’t work and prevented startup. I tried lowering the frequency to 3600MHz, which allowed a stable boot after stress tests and benchmarks. The next attempt at 3666MHz failed completely; only 3800MHz was stable with two sticks. At 3866MHz it booted but was unstable, causing random crashes during heavy RAM tasks. I’m aiming for 4000MHz across all four modules. Since these RAMs are designed for Intel platforms and may not perform well on AMD systems, adjusting the timing manually could help. Any advice or guidance would be greatly appreciated. Relevant links: [RAM info](https://www.gskill.com/product/165/184/1...17D-32GVKB) | [Motherboard specs](https://rog.asus.com/motherboards/rog-st...model/spec) | [QVL details](https://dlcdnets.asus.com/pub/ASUS/mb/So...0_0423.pdf)
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TommyTheLommy
02-23-2019, 03:05 AM #1

Hello, I recently installed a new motherboard, CPU, and RAM. Details: Motherboard – Asus ROG Strix X570-F Gaming (BIOS 4002, upgrade to 4021 soon); CPU – AMD Ryzen 9 5900X with Antec Mercury 360 AIO; Memory – G.Skill Ripjaws V 4000MHz CL17 4x16GB (two 8GB kits). These modules aren’t listed in the QVL for this board, which I overlooked before purchasing, and discovered problems when they failed to boot. I enabled the DOCP profile set to 4000MHz, but it didn’t work and prevented startup. I tried lowering the frequency to 3600MHz, which allowed a stable boot after stress tests and benchmarks. The next attempt at 3666MHz failed completely; only 3800MHz was stable with two sticks. At 3866MHz it booted but was unstable, causing random crashes during heavy RAM tasks. I’m aiming for 4000MHz across all four modules. Since these RAMs are designed for Intel platforms and may not perform well on AMD systems, adjusting the timing manually could help. Any advice or guidance would be greatly appreciated. Relevant links: [RAM info](https://www.gskill.com/product/165/184/1...17D-32GVKB) | [Motherboard specs](https://rog.asus.com/motherboards/rog-st...model/spec) | [QVL details](https://dlcdnets.asus.com/pub/ASUS/mb/So...0_0423.pdf)

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Janahan100
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02-23-2019, 11:34 AM
#2
To apply an XMP profile with odd numbered latency (17), turn off "Gear Down Mode" in the memory timing options. This doesn’t ensure the memory will meet the XMP requirements. Your main focus should be on the Infinity Fabric Link at 4000mt/s, 1:1 ratio, and 2000MHz IF. At 3800, switch to uncoupled mode and run at a 1:2 ratio, which lowers the effective frequency and can improve stability and higher-frequency performance. You’ll recover lost speed by reaching closer to 4267MHz and running faster, though you’ll need to continue adjusting and testing. The CPU voltage will automatically adjust to 1.08V on auto; you can safely use 1.2–1.25V, keeping an eye on temperatures. Make sure the memory voltage matches the XMP rating, and consider raising it slightly for better results. Disabling "power down mode" helps prevent throttling when the system is idle.
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Janahan100
02-23-2019, 11:34 AM #2

To apply an XMP profile with odd numbered latency (17), turn off "Gear Down Mode" in the memory timing options. This doesn’t ensure the memory will meet the XMP requirements. Your main focus should be on the Infinity Fabric Link at 4000mt/s, 1:1 ratio, and 2000MHz IF. At 3800, switch to uncoupled mode and run at a 1:2 ratio, which lowers the effective frequency and can improve stability and higher-frequency performance. You’ll recover lost speed by reaching closer to 4267MHz and running faster, though you’ll need to continue adjusting and testing. The CPU voltage will automatically adjust to 1.08V on auto; you can safely use 1.2–1.25V, keeping an eye on temperatures. Make sure the memory voltage matches the XMP rating, and consider raising it slightly for better results. Disabling "power down mode" helps prevent throttling when the system is idle.

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