[Official] Zen 5 X3D Owner's Club (9800x3D / 9900x3D / 9950x3D)

CocaCoIa · Feb 7, 2025

gupsterg said:
See this .

Thanks, it looks like something similar to Intel - slightly better clock, less tight timings.

vinz · Feb 8, 2025

Thomxs said:
Yo guys, do you think that running a static 5.5 with around 1.22v is safe If I Enable Current Control Limiter and Disable Peak Current Control? I'll only be playing Valorant/CS and good latency and feel is a must and static OC feels SO much better then PBO.
I have a lt720 360mm AIO

Depending of your cooling you could use between 1.2-1.25, maybe 1.28 with a ultra good cooling (and delied)

Now i'm running 5650 at 1.225V daily , static, SMT OFF, 4xpump + 1x mora 420 + 2x460 extrem.

I ordered the delied kit, i'm really waiting it, because whithout, i'm not able to stabilize 6600/2200 or 8500/2133, it pass karu and tm5 6hours but when temperature increase like 4-5°, IMC is unsable, so delied will stabilize that normally.

vinz · Feb 8, 2025

CocaCoIa said:
Hello, I'm currently using Intel OC system, and I'm interested in overclocking on AMD X3D system.
Is there any advantage of 24GB(Hynix M-die) RAM over 16GB(Hynix A-die) RAM?

The bottleneck of games, running more than 32G of ram yes

I started by 2x16 A-die, gskill, but now i'm using 2x24 M-die gkill, they are really fine, it's pretty the same as A-die, just RFC lower and some timmings, but when benchmark it's near 0,5% difference.
But don't try now 2x32 or you will reach the IMC limit, so no tight timmings

Thomas Cawley · Feb 9, 2025

Hey guys, new to AMD and have been tinkering with overclocking. Unfortunately, I'm having issues with PBO and curve optimizer and can't seem to get any type of decent PBO overclock to work with mem overclock. I'm running direct die with an Optimus water block and MSI Godlike X870E and temps are good (idles at 42 degrees and max temp on Cinebench R23 multithread pass never goes above 65 degrees). My memory is decent and seems stable on Karhu and Memtest 4 hours. (running 4 sticks) Corsair Dominator Titanium 64GB (4 x 16GB) DDR5 6400 CMP64GX5M4B6400C32. My question is, I can do a static overclock all cores at 5.4GHZ with voltage bumped up to 1.26V is this safe for a daily driver? To have all the cores constantly pushing 5.4 even at idle? Temps do reach 80 degrees when running a stress test like Aida 64 extreme but drop back down to 50 degrees when idle.

Imprezzion · Feb 9, 2025

Thomas Cawley said:
Hey guys, new to AMD and have been tinkering with overclocking. Unfortunately, I'm having issues with PBO and curve optimizer and can't seem to get any type of decent PBO overclock to work with mem overclock. I'm running direct die with an Optimus water block and MSI Godlike X870E and temps are good (idles at 42 degrees and max temp on Cinebench R23 multithread pass never goes above 65 degrees). My memory is decent and seems stable on Karhu and Memtest 4 hours. (running 4 sticks) Corsair Dominator Titanium 64GB (4 x 16GB) DDR5 6400 CMP64GX5M4B6400C32. My question is, I can do a static overclock all cores at 5.4GHZ with voltage bumped up to 1.26V is this safe for a daily driver? To have all the cores constantly pushing 5.4 even at idle? Temps do reach 80 degrees when running a stress test like Aida 64 extreme but drop back down to 50 degrees when idle.

View attachment 2694936

It's probably safe but it serves very little purpose over just using PBO with +200 frequency offset which is 5425 and retains full idle power down and such. It's also a LOT of voltage for just 5.4. It seems like too much but maybe it's just a pretty bad sample.

PBO itself shouldn't mess with memory OC at all so. I'd focus on getting that to work honestly.

Thomas Cawley · Feb 9, 2025

Imprezzion said:
It's probably safe but it serves very little purpose over just using PBO with +200 frequency offset which is 5425 and retains full idle power down and such. It's also a LOT of voltage for just 5.4. It seems like too much but maybe it's just a pretty bad sample.

PBO itself shouldn't mess with memory OC at all so. I'd focus on getting that to work honestly.

That’s the issue for me it seems to mess with the ram. Without any overlock or Expo on my memory I can run PBO 200MHZ with -30 curve and run fine on any stress test. But as soon as I try EXPO 1 or manual timings I hardlock immediately. I can remove the PBO and pass any memory test with the timings in the picture or EXPO. I’ve tried -10 and it’ll run for about 3 min and hardlock. It’s just weird.

alexp247365 · Feb 9, 2025

My rig is currently without a graphics card, so all the overclocking that's been attempted in the last week has been done with the IGPU of the 9800x3d.

Some observations that I do not know the answer to - maybe some of you could weigh in?

If I use PBO for a 200 boost, I'm hitting 84c/150w PPT on a LF 420 and clocks are jumping all over the place on CB23. Same response happens with using CO tuning + PBO.. clocks jump all over the place. Is this the normal behavior using a GPU, or is it just an artifact trying to OC on an IGPU?

Once the GPU arrives, I should be able to turn off the IGPU and get those 30w back into the budget, yes? Will getting those 30w back also lower temps?

FWIW, if I go ECLK + CO tuning, I can get CB23 to pretty much lock clocks @104Eclk + CO, no PBO. CB23 scores are also better this way (as I'm not blowing cooling or power budget.)

None of this is probably news for the vets here, but this has been my first real attempt to OC, so the learning has been steep this week. Thanks guys for any advice.

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Imprezzion · Feb 9, 2025

Thomas Cawley said:
That’s the issue for me it seems to mess with the ram. Without any overlock or Expo on my memory I can run PBO 200MHZ with -30 curve and run fine on any stress test. But as soon as I try EXPO 1 or manual timings I hardlock immediately. I can remove the PBO and pass any memory test with the timings in the picture or EXPO. I’ve tried -10 and it’ll run for about 3 min and hardlock. It’s just weird.

Well, let's say for example your CPU is really that "bad". It would explain PBO not working. With +200 and with any level of -CO would not give enough voltage for the clocks given so obviously it would crash. 1.260v is not something it'll easily give with PBO. It would need scalar x10 and probably a positive CO value to even do that high consistently.

My other build for one of my mates with the X870 Eagle and a 9800X3D does quite well for the CPU but it has a bad IMC unfortunately. It does PBO +200 -35 just fine at like 1.117v load and remains stable but the IMC unfortunately doesn't do 6400 nor 2200 FCLK so we're kinda stuck at 6000 / 2100 or 6200/2066 as that's simply the best it'll do. Even 6000/2100 needs a ton of VDDP, vSOC and VDDIO to run stable. It being a 6600C34 kit means no EXPO to fall back to so it always needs manual setup / tuning. I got it quite tight at 6000C26 with tubes sub timings and 2100 FCLK now so yeah performance is there. Latency is a tad high but still.

Sam_Oslo · Feb 9, 2025

Thomas Cawley said:
That’s the issue for me it seems to mess with the ram. Without any overlock or Expo on my memory I can run PBO 200MHZ with -30 curve and run fine on any stress test. But as soon as I try EXPO 1 or manual timings I hardlock immediately. I can remove the PBO and pass any memory test with the timings in the picture or EXPO. I’ve tried -10 and it’ll run for about 3 min and hardlock. It’s just weird.

It's not your PBO or CPU. Your 4 sticks are not stable at those EXPO speeds.

Those EXPOs are for 2x16 and it's not a good idea to use them with 4x16. If you want to use 4 sticks then you have to overclock the RAM manually, and it will limit your RAM overclock.

Sam_Oslo · Feb 9, 2025

Hey guys, what's the exiting news about 9950X3D?
Any secret leaks yet?

CocaCoIa · Feb 9, 2025

Sam_Oslo said:
Hey guys, what's the exiting news about 9950X3D?
Any secret leaks yet?

Thomas Cawley · Feb 9, 2025

Sam_Oslo said:
It's not your PBO or CPU. Your 4 sticks are not stable at those EXPO speeds.

Those EXPOs are for 2x16 and it's not a good idea to use them with 4x16. If you want to use 4 sticks then you have to overclock the RAM manually, and it will limit your RAM overclock.

At the speeds pictured it is stable though. Tried both Karhu and Memtest at 4 hours of each, should I stress them longer?

Luggage · Feb 9, 2025

Thomas Cawley said:
At the speeds pictured it is stable though. Tried both Karhu and Memtest at 4 hours of each, should I stress them longer?

Yes, let it run over night at least.

Menko22 · Feb 9, 2025

Luggage said:
Yes, let it run over night at least.

I'm trying to work on the overclock of the 9800x3d but I'm using the igpu because I don't have the GPU yet.

How much can affect to be using the igpu for the core OC and the RAM OC?

Luggage · Feb 9, 2025

Menko22 said:
I'm trying to work on the overclock of the 9800x3d but I'm using the igpu because I don't have the GPU yet.

How much can affect to be using the igpu for the core OC and the RAM OC?

Easier to find instabilities with IGPU enabled, don’t know if it affects stability though.
For sure if you are stable after stress testing while using the IGPU (Furmark, FireStrike, Superposition) you will also be stable when you turn it off…

It’s part of the power budget and will add some heat so I don’t know how much it affects PBO, have not ran any tests.

alexp247365 · Feb 9, 2025

Menko22 said:
I'm trying to work on the overclock of the 9800x3d but I'm using the igpu because I don't have the GPU yet.

How much can affect to be using the igpu for the core OC and the RAM OC?

Same boat as you, Menko. No GPU until it ships.

Playing with it all week, I was able to get a 5.4 across all cores in CB23 for 30 minutes under 83c @150w using an LF 420. But it wasn't as easy as following a guide like Scatterbencher.
I'm hoping when we get the IGPU's 30 watts back by installing a proper GPU ,the temps will come down as well.

Let me know if you run into problems. I can share my observations.

Luggage · Feb 9, 2025

Finally transplanted to the loop. Top rad had to move out of the case. Lost a lot of flow with the Iceman block compared with my old Bykski DDR4 block, perhaps my fittings go too deep?
Didn't bother going direct die - didn't have enough energy to figure out if it was possible with the TechN block and also skipped LM on the IHS if I want to sell this chip.
Still dropped in SP score on reflash with the better cooling

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Electronic device Electrical cable Computer hardware Technology Electronics

Sub · Feb 10, 2025

+200mhz -CO is -22 to -35 with some curve shaper in high-region but not max, scalar 2x, mem timings starting to get dialed, but I am looking for tips on further lowish hanging fruit. If there isnt any I will start to slowly lower voltages on mem, since I bumped these up here intially but never tried to lower them yet.

Antsu · Feb 10, 2025

Sub said:
+200mhz -CO is -22 to -35 with some curve shaper in high-region but not max, scalar 2x, mem timings starting to get dialed, but I am looking for tips on further lowish hanging fruit. If there isnt any I will start to slowly lower voltages on mem, since I bumped these up here intially but never tried to lower them yet.
View attachment 2695134

I would say you've succesfully harvested the lower branches, now it's up to you if you're hungry enough to start climbing...

Taraquin · Feb 10, 2025

Thomas Cawley said:
That’s the issue for me it seems to mess with the ram. Without any overlock or Expo on my memory I can run PBO 200MHZ with -30 curve and run fine on any stress test. But as soon as I try EXPO 1 or manual timings I hardlock immediately. I can remove the PBO and pass any memory test with the timings in the picture or EXPO. I’ve tried -10 and it’ll run for about 3 min and hardlock. It’s just weird.

Find stable ram setting first, then try your way with pbo+co.

[Official] Zen 5 X3D Owner's Club (9800x3D / 9900x3D / 9950x3D)

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Imprezzion

Thomas Cawley

alexp247365

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