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Stability Help Plz! G.Skill Trident 4000mhz 17-17-17-37 1.35v (4x8gb)

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New Member
Jul 13, 2010

I bought two separate G.Skill Trident Z Royal kits each at 4000mhz 17-17-17-37 and 1.35v (4x8gb) timings from NewEgg. Im wondering if you can tell me if my stress testing I’ve done is sufficient for gaming/steaming/moderate workloads or whether I should RMA them and wait for a 4 stick kit XMP to come available. I have about 10-12 days left to return to NewEgg so appreciate the quick response.

The four sticks have the same serial # except 87, 88, 89, 90 at the end – which leads me to think that they were all created in a row despite them being in separate kits. I would think that this would make them more compatible together since 4 stick kits are usually 4 sticks in succession (albeit XMP tested together as well, which isnt the case here since they are 2 seperate kits).

I stress tested both kits individual (2 sticks at a time) – both handled fine on XMP 1 and 2 under Prime Large FFT for 1 hour.

My motherboard is a ASUS Strix z490 Gaming G – WiFi (its on the QVL for the 4 stick pack and 2 stick packs of 4000mhz CL17). My PC has a i9-10900K at 5.0ghz (oc verified by Silicon Lottery, their OC is below for reference) where I bought it. My system is under custom water with 65-68c temps under full load.

Silicon Lottery binned the following OC on my CPU:
• Ai Overclock Tuner: XMP II (i changed it XMP 1 for this situation)
• AVX Instruction Core Ratio Negative Offset: 1
• CPU Core Ratio: By Core Usage
o Turbo Ratio Limit 0: 52
o Turbo Ratio Cores 0: 3
o Turbo Ratio Limit 1: 51
o Turbo Ratio Cores 1: 6
o Turbo Ratio Limit 2: 50
o Turbo Ratio Cores 2: 10
• Digi+ VRM
o CPU Load-line Calibration: Level 3 (they told me to do LLC 4 based on my mobo weaker vram cooling)
• Internal CPU Power Management
o Long Duration Package Power Limit: 230
o Short Duration Package Power Limit: 230
• CPU Core/Cache Voltage: Manual Mode
• CPU Core Voltage Override: 1.350

My mobo manual states that of the 4 dimm slots, you want to start with slots 2 and 4.

So from left to right I started with these sticks (ending 2 digits from serials) 89 – 87 – 90 – 88. As such, the kits were together in their respective dual channels

This config posted to windows, but failed to load Modern Warfare Warzone. XMP2 failed (understandably since that was rated for 2 sticks). XMP1 was the one that posted. I got a lot of BSODs though and seemed unstable

So then I switched the sticks around and went 87 – 89 – 88 – 90 and XMP1 (just timings rest auto in bios). So 89 and 90 were in slots 2 and 4 now.

This posted to windows, ran MW Warzone and GTA for 3 hours of gaming while streaming with Streamlabs OBS and no crashes. Further it handle a typical workload I do over night running between 50-70% cpu and 50% ram utilization for 12hrs with no crashes or BSODs.

However, it only ran stable in Prime Large FFT for 45 mins before threads started stopping. By the 1 hr mark I had 8 of 20 threads stop. But prime was still running on the remaining 12 threads

So my question is – are my real world uses of the system (gaming/stream, video rending, or other workload processing tasks) enough of a benchmark to let the RMA window run out and stick with these ram? Or should Prime really run stable at XMP indefinitely and should I RMA them, buy some cheap ram on Amazon that I can return later, and wait for a 4 pack of the 4000mhz cl17 come in stock?

Cost is not an issue, and i want 4 dimms filled of the royal since it goes with my builds looks. In case you want to recommend 2x16 ram im not interested.

Appreciate you thoughts and reply!
You'll likely need to add some VCCSA and VCCIO voltage for four dimms. That's where I would start
4 DIMMs on consumer-level motherboards most always have to be run under spec. Plus your G.Skill RAM isn't listed on the memory support list, and those that are, are only qualified for 1 or 2 DIMMS, not 4.

Scale them back to 3600 or 3200 and be happy.
I would run memory at manual (disabled XMP) 4000 CL18-18-18 1.40V, 1.30V IO and 1.35V SA to check if it works like that. If it does then probably the motherboard or XMP is forcing settings which are not possible in 4-module setup. The next step would be to set 17-17-17-37 ... next lower the DIMM voltage to 1.35V ... and next try to tighten sub-timings.

I guess that a lot depends on the motherboard in this case. I was able to run 128GB (4x32GB) at DDR4-4000 on other Z490 motherboards so I don't think that 4x8GB G.Skill Royal/Samsung IC would have any problems with this clock.
Some Z490 motherboards have weird problems with specific IC or memory clock. I can't say much about 4-stick setup on the Strix Z490-G Gaming as I was only testing it for one day for max clock. It actually made DDR4-4800 on 2 sticks but nothing more.

If your motherboard has initial BIOS then update it to the latest version.