Discussion Zen 5 Builders thread

[igor_kavinski]

But that only the 4+4 can be used for the motherboard's CPU connectors and only the 6+2 goes to the video card, correct?

Correct.

The labelling on the PSU is a bit confusing. I don't think a third 6+2 GPU cable is possible with this PSU but I could be wrong.

 

[Sonikku]

Correct.

The labelling on the PSU is a bit confusing. I don't think a third 6+2 GPU cable is possible with this PSU but I could be wrong.

Yeah, that's what I thought. But it's this connector circled that's throwing me for a loop. Is it for CPU or PCIE?!

 

[In2Photos]

I have that RM 850X on my build. I use two 8 pins for the CPU and 3 8 pins pins for the GPU. They are interchangeable on the PSU side.

 

[StefanR5R]

Yep, the print on the back of the CPU translates like this:

"6+2 PCIe" = PSU-side connector of Corsair's PCIe power cables (mostly for graphics cards),
"4+4 CPU" = PSU-side connector of Corsair's EPS/ATX12V power cables (mostly for mainboards),
"&" = "either/or".​

This CPU has got a single +12V rail and the mentioned PSU-side cable ends have identical pinouts. Therefore you can attach as many of each of these two cable types as you want, at any of these ports.
Edit,

I don't think a third 6+2 GPU cable is possible with this PSU but I could be wrong.

You can attach up to 5 EPS cables, or up to 4 EPS + 1 PCIe, or up to 3 EPS + 2 PCIe (that's the amount of cables which you get out-of-the box in the European version at least), or up to 2 EPS + 3 PCIe, or up to 1 EPS + 4 PCIe, or up to 5 PCIe. Regardless of which cable ports are populated and how they are populated, total +12V load across all cables, including the ATX 24-pin cable and peripheral power cables, needs to stay < 850 W/ < 70.8 A.

 

[SteinFG]

deleted

 

[SteinFG]

But it's this connector circled that's throwing me for a loop. Is it for CPU or PCIE?!

You can use this for CPU or GPU, though you must use a correct cable (4+4 for CPU, 6+2 for GPU). You have 5 such plugs, so 2 (CPU) + 3 (GPU) or 1 (CPU) + 4 (GPU) is possible, provided you have the right cables

 

[Hulk]

Just ordered the parts for my 9950X build. Am I going to have issues with this memory since at 1.4V it's kind of overclocked? Should I go with something a little more tame?

https://www.amazon.com/gp/product/B0BPTKD797/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1

 

[igor_kavinski]

https://www.amazon.com/gp/product/B0BPTKD797/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1

Why not this? https://www.amazon.com/CORSAIR-Vengeance-6000MHz-Compatible-Computer/dp/B0DFMSNWCJ/

CL28 for not a lot more.

Don't think I've seen anyone complain about 1.4V here, unless you want to keep idle power low.

 

[Hulk]

Why not this? https://www.amazon.com/CORSAIR-Vengeance-6000MHz-Compatible-Computer/dp/B0DFMSNWCJ/

CL28 for not a lot more.

Don't think I've seen anyone complain about 1.4V here, unless you want to keep idle power low.

Thanks for the link. Looks good but I was trying to stay with QVL memory.

TUF GAMING B650M-PLUS WIFIï½Motherboardsï½ASUS USA

TUF GAMING B650M-PLUS WIFI is equipped with outstanding features, including 6-layer PCB design, DDR5, PCIe 5.0 M.2 support, Realtek 2.5Gb Ethernet, Vertical M.2 slot (Key E), rear USB 3.2 Gen2 Type-C®, front USB 3.2 Gen 1 Type-C®, BIOS FlashBackâ¢, DisplayPort/HDMI, USB4® (Thunderbolt⢠4)...

www.asus.com

So tough to find something QVL that is 1.35v, decent timings, with EXPO. There are like a million ADATA options but I can't find them for purchase.

 

[Sonikku]

Everything's here! It's time...

 

[igor_kavinski]

Everything's here! It's time...

4-dimm kit? Seems large for a box of RAM.

 

[Sonikku]

4-dimm kit? Seems large for a box of RAM.

2-dimm. But twice as pretentious!
I would have gone with 4 dimm for moar rgb but people tell me Ryzen struggles with four sticks.

 

[igor_kavinski]

I would have gone with 4 dimm for moar rgb but people tell me Ryzen struggles with four sticks.

Did. Both your CPU and mobo are new so possible things may have improved. X870 mobos may have better DDR5 support overall to accommodate DDR5-8000 EXPO kits. Running four dimms at 5200 MT/s seems reasonably possible with your hardware.

 

[Hulk]

Microcenter - $570 for 9950X, $90 for RAM, $180 for mobo + 5% MC credit card discount.
As you all know, my first AMD build.

 

[Markfw]

Microcenter - $570 for 9950X, $90 for RAM, $180 for mobo + 5% MC credit card discount.
As you all know, my first AMD build.

View attachment 113518

For a cooler, you need this: ($35)

Amazon.com

 

[Markfw]

Microcenter - $570 for 9950X, $90 for RAM, $180 for mobo + 5% MC credit card discount.
As you all know, my first AMD build.

View attachment 113518

Is that memory 6000 EXPO ??

 

[igor_kavinski]

Is that memory 6000 EXPO ??

Yup

 

[Markfw]

Yup

View attachment 113524

Perfect. I could not read that even when I clicked on the picture, and it got bigger. We will have a satisfied person on their first AMD build. @Hulk make sure to set the memory to EXPO in bios when it boots.

 

[Hulk]

It's alive! So far so good. The build was smooth. Booted right up and I'm configuring things now.

 

[Hulk]

For a cooler, you need this: ($35)

Amazon.com

That's the one I have! Just switched from the LGA1700 brackets to the AM4/5 ones that I have never touched until this day.

 

[Markfw]

It's alive! So far so good. The build was smooth. Booted right up and I'm configuring things now.

great. Did you see my suggestion above for you ?
Oh, and change you sig when done.

 

[Hulk]

Still setting things up. Haven't set Expo in BIOS yet. Just for kicks ran a quick CB R23. 41,500, bone stock. Did nothing but install Windows. Max temp was 79 degrees.
Wow. I'm very happy. I hit 40k once with my 14900K but I had to take it outside in 20 degree F weather, let it sit for a half hour and then get in a quick run.
Day-to-day use I was lucky to get 34k and that was with high temps.

I am very glad I made the move.

Updated the signature. Feels weird to be AMD after all the years of Intel! But it's a good weird.

 

[Markfw]

Still setting things up. Haven't set Expo in BIOS yet. Just for kicks ran a quick CB R23. 41,500, bone stock. Did nothing but install Windows. Max temp was 79 degrees.
Wow. I'm very happy. I hit 40k once with my 14900K but I had to take it outside in 20 degree F weather, let it sit for a half hour and then get in a quick run.
Day-to-day use I was lucky to get 34k and that was with high temps.

I am very glad I made the move.

Updated the signature. Feels weird to be AMD after all the years of Intel! But it's a good weird.

update once you get expo set. It will get slightly faster, even in CB23.

 

[CP5670]

I'm getting that issue again where the memory training gets stuck maybe 50% of the time on a warm restart, with the latest MSI bios (a beta bios), and requires a cold boot. I had a lot of trouble with this issue on the 7800X3D but a bios update eventually fixed it. I have memory context restore turned off. Turning off expo seemed to be a temporary fix before, although I generqlly dont reboot except for windows updates.

 

[Hulk]

Okay so I'm pretty much all set up. Here are my thoughts and some data. The build and setup was super smooth, no issues, and not one lock up freeze or other anomoly during the entire process of loading tons of applications, audio and video plugins, activating licenses. Just worked.

Overall performance is of course much better than my 14900K in every application I use. All I did in the BIOS after my initial CB R23 run was enable EXPO for my memory.

CB R23 MT score was initially about 41500 but that dropped to 40600 once I loaded everything up and strangely enabled EXPO memory, which I thought would have bumped the score a bit. Looks like there is a 200W package power limit in the BiOS somewhere because it bumps that in HWinfo. Average clock during the run was 4.7GHz at 88C MT, and 5.64GHz ST.

I have a 4 RAW photo test I do using PureRaw4. Using my ARC750, the 14900K could process a photo in 11 seconds, 9950X in 9.6 seconds. Keep in mind that the GPU is doing the heavy lifting here. CPU only the 9950X could process a photo in 37.5 seconds. Unfortunately I don't have this data for the 14900K but I do know it was 75 seconds per photo with PureRaw3. I'm sure v4 is faster then v3 but not twice as fast. Zen 5 is more performant in PureRaw both assisting the GPU and on it's own.

Our forum Handbrake test took 100.5 seconds. I was bumping against 200W there as well. My effective clock was much lower than Detox but my efficiency per frame higher. Perhaps lower latency memory is better than frequency in Handbrake for this test? I made sure to test using Handbrake 1.3.3. I will update those results in that thread now...

So overall I'm quite happy. First, there have been absolutely no incompatibility or instability problems. Second, performance is better across the board at lower temps and power. While Zen 5 is easier to cool than Raptor Lake for similar performance, as is always the case, if you really want to push there is a lot more performance on the table with Zen 5. I'm happy with the 200W limit. The IPC of Zen 5 really is quite extraordinary in my applications.

Oh yeah, quick "seat of the pants" test in Presonus Studio One rendering out a multitrack file. 14900K would generally do 9 times faster than realtime, 9950X is doing 12 times real time. That's a big one for me because I'm waiting on the mixdowns quite a bit.