Question Zen 4 builders thread

[Markfw]

I know its early, but as someone pointed out, I better get my ram now before the scalpers are all over it.

To go with a 7950x, what do you think of this ram:

https://www.newegg.com/g-skill-32gb-288-pin-ddr5-sdram/p/N82E16820374369?Item=N82E16820374369

(edited for my best recommendation, 12/5/2023)

 

[eek2121]

I managed to get the unreleased 0703 BIOS for the Crosshair Extreme from someone on Overclock.net today. Been testing my Corsair Dominator Platinum 6200 memory with it. DDR5 6000 is currently stable with average timings using Prime95 512K+ FFT no AVX torture testing. 34-38-38-72 with tweaked sub-timings. CL32 is a no go. Will error within 4 hours. CL34 went for 8 hours so far.

The sub-timings do translate to what I was accustomed to with Intel. Wording is a bit different. Not going too crazy with them. Just going to do a middle ground from what I did with Intel and the JEDEC default I see in the BIOS.

Played with fan curves in the Asus BIOS. Default is of course too deafening at load. Went with all fans at 70% at 95 degrees, 60% at 80 degrees, and 50% at 20 degrees. Tied to the CPU. Much more tolerable.

I have precision boost overdrive enabled. Gives me a few hundred more points in Cinebench R20.

FCLK seems stable at 2100MHz. Tried 2200MHz. It seemed to run fine, but benchmark scores went down. Perhaps there is error correction overhead on an unstable clock. Going to test 2100MHz further.

It would be extremely if AMD would provide “safe, yet fast” values at common speeds from 5600 and up for all timings and subtimings, so those of us without EXPO support have a better chance of success.

 

[igor_kavinski]

Ended up buying a 4000TB Sabrent Rocket 4 Plus (PCIE 4.0) SSD.

I must have woken up in the future. 4 petabytes is affordable???

 

[VirtualLarry]

I must have woken up in the future. 4 petabytes is affordable???

Johhny Mneumonic indeed.

 

[biostud]

Asrock B650 lineup:

ASRock AMD B650 motherboard specs leaked, B650E Taichi is E-ATX with 27 phase VRM - VideoCardz.com

ASRock’s mid-range B650 motherboard series exposed The Taiwanese company is preparing at least seven models of B650 motherboards, including three of the “Extreme” variant. We have already shared pictures of three B650 motherboards from ASRock, but now we have a full list. We can now confirm...

videocardz.com

I was looking at the B650E PG Riptide, how much does only having 17 power phases matters when only running 8 cores and not planning any OC?

 

[igor_kavinski]

I was looking at the B650E PG Riptide, how much does only having 17 power phases matters when only running 8 cores and not planning any OC?

I can tell you that it's more than you have currently and more than you will need

17 is supposed to be a lucky number.

 

[Curious_Inquirer]

I was looking at the B650E PG Riptide, how much does only having 17 power phases matters when only running 8 cores and not planning any OC?

According to Bulidzoid not much, unless it’s a 30 amp power phase(which it is probably not). And especially if you’re not planning on doing any OC. Your 7700x will be well fed by those 17 phases.

 

[biostud]

According to Bulidzoid not much, unless it’s a 30 amp power phase(which it is probably not). And especially if you’re not planning on doing any OC. Your 7700x will be well fed by those 17 phases.

It is for a future 7800X3D build.

 

[igor_kavinski]

It is for a future 7800X3D build.

Then it matters even less. That will sip power if it's anything like the 5800X3D. I don't think the V-cache will be able to clock as well as the cores on a 7700X.

 

[AdamK47]

Woke up today after another 8 hours of stability testing at DDR5 6000. Prime95 16 core 2 threads each (32 thread) no-AVX 512K+ FFT with 24GB of the 32GB allocated. No errors. That has been the hardest one to pass memory-wise and it looks to be stable.
Chose the middle ground on the memory timings to play it safe. May tweak them down further. I probably don't need 1.4V on the memory. May also try lowering that.

 

[Curious_Inquirer]

It is for a future 7800X3D build.

Oh then you’ll definitely not need to worry at all if the 7800X3D is frequency locked like the 5800X3D.

 

[Kocicak]

The really interesting CPU for AM5 comes next year, this one is just tweaked ZEN 3 on a new process.

Oh no, I just learned that ZEN 5 comes in 2024, not 23! What comes the next year then?

 

[eek2121]

Oh no, I just learned that ZEN 5 comes in 2024, not 23! What comes the next year then?

X3D

 

[repoman0]

I can't get linux to install... It was installed yesterday, but I had to redo windows.

Haven’t tried Linux yet — I’m going to attempt to put Manjaro on my old 1TB nvme though tomorrow perhaps. Just reinstalled Windows 11 on my new sn850x and still no sleep mode available, so it wasn’t an old Windows install problem. That seems like the only thing that isn’t working .. hopefully they fix it with a BIOS update soon. I’m on 1.07 and might try the 1.08 beta soon.

 

[Markfw]

Haven’t tried Linux yet — I’m going to attempt to put Manjaro on my old 1TB nvme though tomorrow perhaps. Just reinstalled Windows 11 on my new sn850x and still no sleep mode available, so it wasn’t an old Windows install problem. That seems like the only thing that isn’t working .. hopefully they fix it with a BIOS update soon. I’m on 1.07 and might try the 1.08 beta soon.

Linux 19 would not install or 20. But 21 is installed there just fine right now ! This is mint.

 

[repoman0]

Sounds like the no sleep mode bug is due to selecting the EXPO memory profile — so say the good people on the ASRock Reddit. Seems like they have employees watching that Reddit and reporting to engineers.

 

[DrMrLordX]

Oh no, I just learned that ZEN 5 comes in 2024, not 23! What comes the next year then?

AMD takes their sweet time between releases now, didn't you already know? Get used to it.

 

[scannall]

Oh no, I just learned that ZEN 5 comes in 2024, not 23! What comes the next year then?

2023 is just 3 months away. An 18 month product cycle is 2024.

 

[Det0x]

Woke up today after another 8 hours of stability testing at DDR5 6000. Prime95 16 core 2 threads each (32 thread) no-AVX 512K+ FFT with 24GB of the 32GB allocated. No errors. That has been the hardest one to pass memory-wise and it looks to be stable.
Chose the middle ground on the memory timings to play it safe. May tweak them down further. I probably don't need 1.4V on the memory. May also try lowering that.

View attachment 68595

I find y-cruncher all stresstests enabled to be the hardest to pass with memory OC on Zen4.. Easy to use and finding errors much faster than all other stresstest in my experience.
Latest version have also been updated for Zen4 AVX512

 

[Timorous]

Then it matters even less. That will sip power if it's anything like the 5800X3D. I don't think the V-cache will be able to clock as well as the cores on a 7700X.

I expect it will clock the same or marginally better than the 7700X.

I am less sure about 7900X3D and 7950X3D parts though.

 

[AdamK47]

Although I don't like AIDA64 and its memory benchmark, I'll post mine anyway. Not currently using the beta version.

 

[igor_kavinski]

View attachment 68616

Is that DDR5-7400+ I'm seeing? With CL32??? HOW???

 

[AdamK47]

Is that DDR5-7400+ I'm seeing? With CL32??? HOW???

No, it's at 6000. AIDA64 reported it wrong.

 

[Det0x]

In typical AMD fashion, goodlike CCD0 is binned together with useless junk CCD1.


CCD0 can almost run PBO CO -30 allcore, while 3 cores on junk CCD1 have zero headroom left


CCD0 singlecore clockspeed is around ~5780mhz in prime95
CCD1 singlecore clockspeed is around ~5450mhz in prime95

Wish me better luck on the other 7950x i get in a few days ^^

*edit*
Have done a further comparison in Cinebench r23 with static allcore OC @ 1200mv core LLC5. (maximum PPT was ~187w and max load temp was 68 degrees)
CCD0 managed 5500mhz
CCD1 could only run 5200mhz.

= 40.5k points at lowish vcore

Seems like its a 300mhz delta between the CCD's both in ST and MT workloads

 

[AdamK47]

Those are at load clock speeds in Prime95? If so, that's actually great. At 100% load across all cores, with the previous test I mentioned, I would see CCD0 hover between 5.2 to 5.4GHz. CCD1 between 5.0GHz and 5.2GHz.

 

[Det0x]

Some more ST testing core0 CC0 @ 1350mv in normal ambient temp

CPU-Z @ 5800mhz

CPU-Z @ 5900mhz

CPU-Z @ 6000mhz


CPU-Z AVX 512 @ 6000mhz