Issue with Ryzen 7600 and 6200Mhz memory

[Chrismk]

Built the following for a teenager and all was well until he started playing games! The machine would suddenly reboot after 90 minutes-2 hours.
Prime95 showed up errors and Memtest86 failed. Contacted Overclockers Support.
I swapped the memory with my flightsim machine (TeamGroup Xtreem 32GB (2X16GB) DDR5 PC5-48000C30 6000MHz).
Both sets ran Memtest perfectly for 12 hours. Since buying the 6200Mhz sticks I'm now aware that 6000Mhz is the 'sweet spot'.

I would like to lower the frequency to 6000. I have turned DOCP off and set the frequency to 6000 and set the timings to the default 38-38-38-78.
All seems to be OK and I'm currently running MemTest64. Was this the correct method?
Of course the big test will be when he starts gaming with it!

Aerocool Dryft v2 Midi-Tower ATX Case
Corsair RMx Series RM750x 80 PLUS Gold Fully Modular ATX PSU
Asus Prime B650M-A WIFI II (Socket AM5) DDR5 Micro-ATX Motherboard
AMD Ryzen 5 7600 Six Core 5.10GHz (Socket AM5) Processor – Retail
PowerColor AXRX 6600 8GBD6-3DH GPU AMD Radeon RX 6600 8 Go GDDR6
TeamGroup Delta RGB 32GB (2X16GB) DDR5 PC5-49600C38 6200MHz Dual Channel Kit Ram
WD Black SN770 1TB SSD M.2 2280 NVME PCI-E Gen4 Solid State Drive (WDS100T3X0E)
Asrock 27" PG27FF1A 1920x1080 IPS 165Hz 1ms FreeSync HDR Widescreen Gaming Monitor

 

[Chrismk]

That guide is exactly what I need, even if to just educate myself. Thank you - and to Tetras for his advice.
I started running Prime95 but three workers failed at around the 25 minute mark. So I applied DOCP and just changed the frequency to 6000.
It's now been running for over 2 hours! But I'll have a look at the guide anyway.
What I didn't do which I regret is running Prime95 when I had the other set of 6000 memory installed. If this Prime95 session fails I will do that next

 

[Chrismk]

Rather use TestMem 5 with the ANTA 777 extreme preset - it’s a far better way of stress testing RAM.

Thanks. I’ll have a look at that.

 

[Chrismk]

Prime95 has run without any errors for over 17 hours!
So enabling DOCP clearly helped.
Thanks everyone. Of course , the proof will be when he starts playing his games.

 

[Chrismk]

OK, thanks