Discussion Zen 5 Builders thread

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Hulk

Diamond Member
Oct 9, 1999
4,672
2,783
136
Sorry to hear of your troubles with Raptor Lake.

IMO, switching to AMD really is no different in terms of hardware. If you like ASUS motherboards, then by all means go with ASUS. Just make sure you pick out a board that has all the slots and ports you need. If you ask 4 different people on here what board you will probably get 4 different answers. I like MSI, some prefer ASUS, ASRock gets a lot of praise, and Gigabyte has a few fans too. In my house we have 1 AM4 build (MSI B550 Tomahawk) and 2 AM5 builds (one a Gigabyte B650 Elite AX, the other MSI B650 Edge). The Gigabyte board has had the most "issues", just some quirks that we have finally worked out with BIOS updates. The MSI boards have been rock solid.

For RAM if you want to keep things simple 6000 CL30 or lower seems to be the sweet spot. But if you like to tinker I'm sure you could go faster and play with timings to maximize performance. The amount of RAM is also dependent on your use case. Is the 32GB you have now enough? As you probably know RAM not on the QVL may still work with your motherboard. New kits are released all the time and not necessarily tested with your particular board. Companies like G Skill seem to work well with most boards when you stick with reasonable speeds.

The big difference between Intel and AMD is the BIOS and options for tweaking the CPU parameters. If you don't plan to mess with any overclocking or PBO or voltage then it is no big deal. If you do want to tweak then you will probably need to do some research to figure out what the settings are and how to tweak them.
Thanks for the detailed response.

As you wrote I think a lot of people base their mobo recommendations on their personal anecdotal experiences, which have some validity of course, but still it's anecdotal. For example, you like MSI. I had an MSI board years ago that always gave me troubles with shutdown and sleep. Could have been one flaky BIOS revision, my setup error, or some other one off but now I stay away from MSI. Next board was Asus and it was solid so I became an Asus guy. Also had a minor problem with Gigabyte once IIFC.

Anyway, yeah I get it. For the same chipset at around the same price they're pretty much the same.

As for memory I don't mess around with it much. For my 14900K I just select "XMP 1" and it works.

I think I read AM5 will automatically be gear 1 to 6000 then gear 2 after that? Not really sure how that works though?

Also, is EXPO AMD the equivalent of XMP for Intel or does AMD also use XMP?

When you buy 8000 RAM can you select other profiles? I mean as RAM speed goes down latency goes down as well? I'm more concerned with stability than that last 2% of performance in 5% of applications that can use it.

Finally, correct me if I'm wrong but I generally stay with memory that is 1.35V or less because I feel that over 1.35V is overclocked and has a better chance of having stability issues under high loads? Am I making stuff up in my head?
 
Reactions: lightmanek

In2Photos

Platinum Member
Mar 21, 2007
2,130
2,206
136
Thanks for the detailed response.

As you wrote I think a lot of people base their mobo recommendations on their personal anecdotal experiences, which have some validity of course, but still it's anecdotal. For example, you like MSI. I had an MSI board years ago that always gave me troubles with shutdown and sleep. Could have been one flaky BIOS revision, my setup error, or some other one off but now I stay away from MSI. Next board was Asus and it was solid so I became an Asus guy. Also had a minor problem with Gigabyte once IIFC.

Anyway, yeah I get it. For the same chipset at around the same price they're pretty much the same.

As for memory I don't mess around with it much. For my 14900K I just select "XMP 1" and it works.

I think I read AM5 will automatically be gear 1 to 6000 then gear 2 after that? Not really sure how that works though?

Also, is EXPO AMD the equivalent of XMP for Intel or does AMD also use XMP?

When you buy 8000 RAM can you select other profiles? I mean as RAM speed goes down latency goes down as well? I'm more concerned with stability than that last 2% of performance in 5% of applications that can use it.

Finally, correct me if I'm wrong but I generally stay with memory that is 1.35V or less because I feel that over 1.35V is overclocked and has a better chance of having stability issues under high loads? Am I making stuff up in my head?
I'm not extremely knowledgeable in this so others would need to chime in for more detail. On AMD you set FCLK (infinity fabric) and UCLK (memory speed). On my system I simply turned on EXPO (yes AMD's equivalent to XMP), which is 6000CL30 for me. I then played around with some various other settings to see if I could get it any faster and if I saw any more performance. Buildzoid came out with some recommended RAM timings that should be stable for most systems. So I then messed around some more based on his suggestions. My system seemed to be stable at FCLK=2000, DDR5 set to 6200, UCLK=MEMCLK, and then the rest of the subtimings were based on Buildzoid.

If you buy a faster kit you could certainly try running it at slower speeds with lower latency. When I built my system nearly 18 months ago, anything over 6000 was pretty expensive and not many kits were available. Others would have to chime in on how much performance you could gain by getting lower than CL30.

On my daughter's AM5 system we simply enabled EXPO and left it at that. I don't want to have to mess with her system to chase the last bit of performance. I wanted stability more than anything since she uses it so much.

Yes, 1.35V is where a lot of kits seem to be for EXPO around 6000, but there are also 1.40V at 6000 too. Then they start to jump up when you get above 6000.
 

Hail The Brain Slug

Diamond Member
Oct 10, 2005
3,541
2,523
136
Anyone want to buy an extra one at a B&M store and ship it to me with next day shipping?

Amazon can't even give me an estimated delivery date. Probably 10-14 business days.
 

Josh128

Senior member
Oct 14, 2022
505
856
106
Just had my 3rd Raptor degrade on me. After 30+ years of Intel I'm going to move to AMD.
I would like to have a smooth build but don't know much about AMD builds.
My requirements are mATX board, fits under my desk, case that is.
I'll go 9950X. Not a big gamer, only use my Arc750 for accelerating PureRaw, Vegas Pro, Topaz photo/video AI, etc...

Looking that his board. Okay?

Looking at this RAM as it is on the QVL list for the mobo: https://www.amazon.com/gp/product/B0BF8FVLSL/ref=ox_sc_saved_title_7?smid=A3TOECTKC4OEBD&th=1

Igor from these boards told me go with this one, it's be okay even though it's not QVL.

I have no problem spending a bit more on RAM to get to the performance sweet spot but I don't know where that is?

Anything else to look out for. You can see my system specs in my sig and I'll be reusing everything but the mobo and RAM. Might pick up a new SSD since I'm starting over actually.

Thanks for any tips.
What were the symptoms/what tipped you off to the degradation? Which SKU were you running and under what conditions? This whole Raptor Lake degrading thing is just super curious.
 

mmaenpaa

Member
Aug 4, 2009
95
176
106
Thanks for the detailed response.

As you wrote I think a lot of people base their mobo recommendations on their personal anecdotal experiences, which have some validity of course, but still it's anecdotal. For example, you like MSI. I had an MSI board years ago that always gave me troubles with shutdown and sleep. Could have been one flaky BIOS revision, my setup error, or some other one off but now I stay away from MSI. Next board was Asus and it was solid so I became an Asus guy. Also had a minor problem with Gigabyte once IIFC.

Anyway, yeah I get it. For the same chipset at around the same price they're pretty much the same.

As for memory I don't mess around with it much. For my 14900K I just select "XMP 1" and it works.

I think I read AM5 will automatically be gear 1 to 6000 then gear 2 after that? Not really sure how that works though?

Also, is EXPO AMD the equivalent of XMP for Intel or does AMD also use XMP?

When you buy 8000 RAM can you select other profiles? I mean as RAM speed goes down latency goes down as well? I'm more concerned with stability than that last 2% of performance in 5% of applications that can use it.

Finally, correct me if I'm wrong but I generally stay with memory that is 1.35V or less because I feel that over 1.35V is overclocked and has a better chance of having stability issues under high loads? Am I making stuff up in my head?
Just wanted to give my 2c on this.

I have built & sold a few hundred desktop PCs (well actually > 1K) over years (decades actually 🤣).

I've been happy with Asrock boards last ~11 years. Boards are stable, bios updates have been good. Just for fun I checked our RMA history and I found three cases since 2018 (2 pcs of AB350M, one B450 PRO4). If PC is going to corporate use it will be at stock (memory @jedec supported speed). If gaming I use EXPO, maybe PBO sometimes.

Most of the boards have been PRO 4 series, oldest I could find from my emails was FM2A75 PRO4-M, 07.05.2013, 50€ from distributor 😁
 
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