Originally Posted by globalthinker
I have them, they are somewhat tricky so far. They don't really match up timing-wise with CJR.
Only paid 2400 SEK for them, about $250. 32 GB B-die kits are hard to find or 50-100% more expensive.
This is the gear I have:
- G.Skill Trident Z Neo DDR4 3600MHz 2x16GB (F4-3600C16D-32GTZNC) - dual-rank
- MSI X470 Gaming Pro Carbon
- Ryzen 3900x
They want tWR of at least 22 and tFAW of at least 42 or training will fail. DRAM Calculator suggests tWR 12 and tFAW 35 for CJR V1 which does not work and requires a clear of CMOS on mine.
procODT 40 Ohm seems better than 48 - 60.
Gear Down Mode enabled seems to work best, a bit higher latency but easier to stabalize.
They are stable with the settings in the Ryzen Master screenshot in memtest, ran up to 2000%.
To me b-die seems too expensive for the performance difference at this time. Hope they can be tweaked further.
That FAW is crazy high... I'm used to running mine at 16-24 depending on clock. tWR is high too.
How is tRFC on these?
If anyone wants the secret B-Die kit: https://www.amazon.com/G-SKILL-Flare...flarw+x&sr=8-1
Check the reviews out: guaranteed B-Die. I'll post my Thaiphoon if anyone is curious. They're only 3200 c14, cas 8.7ns according to Thaiphoon, but my particular kit is amazing. I've come across two other posters here with Ryzen 3k builds and they got similar results. I've run them at 3600/1800 14-14-14-14-30-48 with FAW 16 and tRFC 288, but generally run them at the specs in my sig, FAW 24, tRFC 304. With more volts (1.5) they'll do 3800 at those primaries and FAW 16.
Ive seen many posters in the DRAM Calc thread who bought TridentZ Neo 3600 c16, and got Hynix instead of Bdie, and the Bdies in them seem to be slightly different than the ones in Flare X, despite some people saying 3200 c14 and 3600 c16 Bdie are the same. I'm not sure how true this is because Ive helped like 15 people with Bdie + Ryzen 3k OC their memory now, and a lot of people with TridentZ Neo 3600 cant do XMP and one was stuck at 3466- this could be board difference though, i.e. T-Topology vs Daisy Chain, or chipset difference.
Ive run mine at 4066/1866 c16- some really nice bandwidth and 70ns latency. In a CPU bound gaming test (Heaven 4.0), I got slightly less fps this way though. Expected. (It was 278 fps vs 285 fps @ 3800/1900 synchronous with the cards clocked as per sig. Let them cool off fully with system off between runs too and controlled for ambient.) Anyway, $119 for this kind of performance is amazing. Runs 13 mem dividers higher than what its binned for. Best memory kit Ive ever owned, even better than Samsung "Miracle RAM" DDR3 from back in the day...
I'd love to see how these are on Zen 1. I'd think they'd do 3200 at very low secondary and tertiaries, and possibly 3466 14-14-14-14-30-44 or something close...