Zen 3 RAM OC is stuck after the first day. Planning to attempt again.
Zen 3 RAM OC is stuck after the first day. Planning to attempt again.
So i got a kit of Team T-Create Expert 2x8GB kit with 3200C16, subtiming 16-20-20-40-60. Im using this with Ryzen 5 5500 and B450-A Pro Max by MSI. From Thaiphoon Burner, the RAM reports as Hynix CJR C-Die. Im not sure about the revision but i think its A2? Anyway, besides the point. While the XMP is rock solid under load, doing anything beyond that does not. At first i tried 16-19-19-38 with all the subtimings copied off Ryzen RAM Calculator, voltage at default 1.35V. While that was stable and it did boot, it blows out error like no tommorrow, and then crashes before i hit it with AIDA64 Memory Test. So thats cool, i toggle back XMP and make sure that its fine, and then try again. I try hitting it with 16-18-18-36, leaving all other advanced timing on auto at 1.37V. And DRAM-CPU light goes on and it refuses to boot. Clear CMOS and then reapplying XMP later fixes it, but im basically back in square 1. And thats where i leave it. But today i wanna try again, and also adding my own overclock on the CPU in preparation for my AG400 later. While the latter i could easily do 4.5-4.6GHz at 1.37V with a big temperature jump that i have to remedy by cranking the stock fan, the RAM is still a bit of an enigma to me. I dont know whether to just give up and keep it XMP, try to hit 3600C18-17 with loose sub timing, 1.37V and Gear Down, or try again with 16-18-18-36 at higher volts. What do you guys think about this tactic? Also i would prefer to not have to go up to the edge of DDR4 safe voltage like 1.4-1.45V, i want to keep this sticks for a bit longer than a year.
To maximize your RAM performance, consider adjusting the tRRDS, tRRDL, and tFAW settings. This reduces the importance of your primary memory and helps optimize speed. With modern RAM, you can typically set these values as tRRDS = 4, tRRDL = 4, tFAW = 16, though for stability you might need to raise tRRDL to 6—especially if using Dual Rank sticks. Once stable, focus on fine-tuning the tRFC timing; lower values generally yield better results. The exact tRFC settings differ widely based on the RAM model you're using—some struggle below 600 while others reach around 200.
it seems cjr faces problems with random shutdowns above 1.45v vsdimm. i’ll need solid evidence to confirm this. most people overclock rarely go beyond 4000, but with enough aggressive tuning and thermal management, you can surpass it. the imc looks excellent on apu ryzens, giving you a solid 5000 ddr4 option. however, i recommend targeting 4400-4600 instead of pushing into 5000+, as that would cause instability and be hard to maintain. using an 2133 m378a1g43eb1 8gb dual-sided samsung e die with dual rank should improve timing, especially for trfc. it scales well beyond 2v and is fairly robust. cooling becomes important if you want to hit those higher voltages. bare pcb ddr4 modules are usually around 200-250rb now, so it makes sense to avoid cheap heatspreaders with random features. the imc can handle that speed in dual rank—some users have achieved 4533 dual rank djrs with just 1.27v voic. it’s impressive, but single rank might not be worth it if your goal is higher.
I have comparable RAM, but Adata boards are on my son's rig. They handle XMP well, but anything beyond that is challenging. I believe I maxed out at 3400MT/s before giving up because of frustration. To be honest, they were the most affordable new units in my area. I didn’t want to ruin my B-Die setup.
I plan to purchase two 16GB kits of Samsung B-Die RAM when demand rises with DDR5 adoption. This is simply my goal to boost performance in Fortnite. It performs well at 144MB but drops significantly in 1% and .1% lows, especially during intense moments. I’m certain UE4 struggles with both rendering and hit tracking, so I’ll have to adapt. All timing parameters remain consistent with XMP settings? And regarding voltage ranges, am I right that 1.37-1.4 is manageable?
It's B-Die on AM4, ready to go if you need a quick boost. I'm using two pairs of 3200C14 and they're really adaptable.
If your goal was to buy random components like 3200c16, it’s a bad move. If you can return, consider doing so. First, set the frequency target and voltage—aim for 4400-4600 Hz with a voltage of about 1.5V (increase if needed). It seems the actual voltage is around 1.45V, which is likely too low; thermal limits will prevent you from going much higher unless you use a fan. For initial runs, try 20-25-25-25-55 or 22-30-30-30-65 frequencies. Leave the trenc control loose for voltage headroom since 1.5V is low. Once the frequency target is set, tighten the trenc and tfaw to 1 (adjust based on your needs). You can experiment with similar settings first, but tuning tertiary outputs may take time due to many variables. Usually, I run 3-6 timings at once for tertiaries to speed up the process. Expect a target around 1.4V, with a command rate of about 2t and gdm off, bgs on. These are educated estimates based on what I’ve seen and researched.