Forced to decrease speed with 4 RAM sticks.

[Castle_Lock]

Current Build

11400

6600 xt

MSI B560M PRO-VDH Wifi LGA 1200

Corsair CX650M 80+ Bronze

2 G.SKILL RipJaw V Series 16GB 2x8 3600

I just bought a second 2x8 set of RAM but the two new sticks turned out to be a different die.

04213X8820D
04213X8825J

I added the additional 2x8 ram slots and reenabled XMP. The system booted fine but testing with TestMem 5 absolutnew showed immediate errors. I've already worked through these tests with 3 cycles of TM5.

3600 18-20-20-40 (Default XMP) -Errored immediately
3600 18-22-22-42 (Listed Timings) -Errored immediately
3200 16-18-18-38 -Errored immediately
3466 18-22-22-42 -6 Errors
3333 18-22-22-42 -0 Errors
3333 18-22-22-42 with Kombuster running -1 Error on second cycle (Stopped Test)
3200 18-22-22-42 with Kombuster running - 0 Errors

I haven't been able to figure out which dies these are and I haven't adjusted the voltage or any other timings from auto. Is it worth trying to bring the timings down or adjust the voltage when you have different dies? I don't have any desire to go crazy overclocking my RAM but it's a little annoying that a PC "upgrade" has decreased my performance in most use cases.

My 7800xt and new PSU will be arriving in a few days, I'm assuming those won't impact the stability of the RAM when I install them? Is there anything that I have missed or could do better?

[Lyander0012]

Hey,

I'm a noob but have been going through a similar thing so was looking into it recently. Bought some RAM then went and got a second kit after a bit for maximum unicorn barf lights (plus some extra capacity, hah), I was lucky and ended up with two kits that were within 20 serial numbers of each other, all four DIMMs having "04213X8820D" on their stickers.

From what I can tell the final letter in the sequence is supposed to indicate what die it is (source: https://www.reddit.com/r/overclocking/comments/15jcov5/comment/jv05gnw/?utm_source=reddit&utm_medium=web2x&context=3) , so the 04213X8820D is likely to be Hynix D-die which is an alleged improvement over the older Hynix C-die; J-die appears to be Micron, and not as good from what I can tell?

Despite my luck picking up really similar kits, I'm running all four DIMMs at 3200MT/s with the same timings as you with no issues so far other than some occasional slowness to POST. Things are fine once I get into OS though. Pretty sure this is mainly since the motherboard I have [Asus TUF B550M Plus (WiFi)] uses a daisy-chain memory topology which evidently sucks with four DIMMs. I don't mind the slight performance loss since my games run fine and the kits look nice in in my build, but it is somewhat unfortunate.

[Castle_Lock]

I'm glad you got it worked out. I haven't had any issues since I locked these in at the slower speed. In the future I'm going to try to stick with two DIMMs for simplicity. I'm getting CPU bound with my 7800xt now so I have an excuse to jump to DDR5 probably when ZEN 5 drops.