Crosshair VIII 2501's for testing

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Hi Jackalito,
why do you say so? Do you have some technical reasons to associate new bioses problems to Ryzen 3000 cpus?

Thankyou!

Did You try common sense? . Ryzen 3000 series worked well and stable up to let's say 2311, or even earlier BiOS version, and now it doesn't. So, yes, there are technical issues, thus, it's not good for the 3000 series . Check out the thread mate.

[Jackalito]

Hi Jackalito,
why do you say so? Do you have some technical reasons to associate new bioses problems to Ryzen 3000 cpus?

Thankyou!

These new BIOSes contain an updated AGESA whose main purpose is to bring a better support for Zen 3 (Ryzen 5000 series). If ain't broken, don't try to fix it, buddy

2702 flashed earlier today, and working as expected so far. Waiting for new AGESA code by next month

[Scary_chicken]

Just wanted to update on my situation. I am still running the BIOS beta version 2502 downloaded from the link in the first page and managed to sucessfully set my memory to 3800 CL14 using the safe presets for subtiming tuning using the DRAM calculator and FCLK at 1900 mHz. However, trying to OC the memory to 4000 MHz is stable with the FCLK at 1900 with the downside of higher latencies (71 ns, compared to 59 ns achieved with 3800 MHz and FCLK 1900 for 1:1:1). Although AIDA 64 shows the memory bus at 2000 MHz it is incorrect given that ryzen master shows it was actually 1900. Setting manually in the BIOS the FCLK to 2000 to reach parity of the IMC with the DRAM results in the inability of the system to boot. The culprit is clearly to me the FCLK being unable to run any higher than 1900, at least for now.
Any ideas on what to do to push the FCLK beyond 1900 and stable?

Thanks.

[Jackalito]

Just wanted to update on my situation. I am still running the BIOS beta version 2502 downloaded from the link in the first page and managed to sucessfully set my memory to 3800 CL14 using the safe presets for subtiming tuning using the DRAM calculator and FCLK at 1900 mHz. However, trying to OC the memory to 4000 MHz is stable with the FCLK at 1900 with the downside of higher latencies (71 ns, compared to 59 ns achieved with 3800 MHz and FCLK 1900 for 1:1:1). Although AIDA 64 shows the memory bus at 2000 MHz it is incorrect given that ryzen master shows it was actually 1900. Setting manually in the BIOS the FCLK to 2000 to reach parity of the IMC with the DRAM results in the inability of the system to boot. The culprit is clearly to me the FCLK being unable to run any higher than 1900, at least for now.
Any ideas on what to do to push the FCLK beyond 1900 and stable?

Thanks.

We need newer AGESA revisions in order to facilitate overclocks of 1900+ more easily. Depending on the quality of your IMC you should be able to reach it once the new code is published.

[Baio73]

Those BIOS drive me nuts...

Here's the story so far... had 2 kits 2x8Gb of G.Skill, 1 was 4000 and one 4133. Worked smoothless @3600 CAS14 until BIOS 2206, then no more luck.
Sold the 4133 kit and grabbed another 4000, identical model (the older is december 2019, the newer november 2020).
With the new kit I can run 12 hours of Kharu @3800 CAS14 before getting an error, rock solid @3800 CAS16.
If I add the older kit, then comes the nightmare... can't even run 3800 CAS16, need to raise them up to CAS18.
That's absolutely a non sense, unless I'm missing some specific BIOS setting for 4 DIMMs configurations... but if they exist, I guess Calculator would have shown them.

So, my final word is the same: those BIOS are HORRIBLE for 4 DIMMs rig.

Gonna give a try to v2702, but I guess nothing will improve.

Baio

[Jackalito]

Those BIOS drive me nuts...

Here's the story so far... had 2 kits 2x8Gb of G.Skill, 1 was 4000 and one 4133. Worked smoothless @3600 CAS14 until BIOS 2206, then no more luck.
Sold the 4133 kit and grabbed another 4000, identical model (the older is december 2019, the newer november 2020).
With the new kit I can run 12 hours of Kharu @3800 CAS14 before getting an error, rock solid @3800 CAS16.
If I add the older kit, then comes the nightmare... can't even run 3800 CAS16, need to raise them up to CAS18.
That's absolutely a non sense, unless I'm missing some specific BIOS setting for 4 DIMMs configurations... but if they exist, I guess Calculator would have shown them.

So, my final word is the same: those BIOS are HORRIBLE for 4 DIMMs rig.

Gonna give a try to v2702, but I guess nothing will improve.

Baio

4-DIMM configurations seem problematic with the current AGESA and the latest BIOS releases published by ASUS. Hopefully it'll get better with new firmware. That's one of the reasons why I'm not having major issues, I only sport 2 RAM sticks.

[chris.skaling]

So far so good, i have had trouble getting all 4 sticks of 8 GB memory higher than 3600, at 3800 now. Screenshots should say the rest, overall stable. But when crash does happen bios does act funny, sometimes wont boot to vga, sometimes stuck on hdd, sometimes i have to clear cmos and reload my saved profile, but overall it does not happen unless i push the system past where it's at now.

[MultiDoc]

Those BIOS drive me nuts...

Here's the story so far... had 2 kits 2x8Gb of G.Skill, 1 was 4000 and one 4133. Worked smoothless @3600 CAS14 until BIOS 2206, then no more luck.
Sold the 4133 kit and grabbed another 4000, identical model (the older is december 2019, the newer november 2020).
With the new kit I can run 12 hours of Kharu @3800 CAS14 before getting an error, rock solid @3800 CAS16.
If I add the older kit, then comes the nightmare... can't even run 3800 CAS16, need to raise them up to CAS18.
That's absolutely a non sense, unless I'm missing some specific BIOS setting for 4 DIMMs configurations... but if they exist, I guess Calculator would have shown them.

So, my final word is the same: those BIOS are HORRIBLE for 4 DIMMs rig.

Gonna give a try to v2702, but I guess nothing will improve.

Baio

If your ram sticks are dual rank then they overstress the IMC, for 4 sticks to work properly make sure that each stick is single rank or use 2 sticks that are either single or dual rank

[Baio73]

If your ram sticks are dual rank then they overstress the IMC, for 4 sticks to work properly make sure that each stick is single rank or use 2 sticks that are either single or dual rank

Thanks for reply.
No, they are 4 sticks of single rank RAM, according to Thaiphoon.

Baio

[uplink]

Those BIOS drive me nuts...

Here's the story so far... had 2 kits 2x8Gb of G.Skill, 1 was 4000 and one 4133. Worked smoothless @3600 CAS14 until BIOS 2206, then no more luck.
Sold the 4133 kit and grabbed another 4000, identical model (the older is december 2019, the newer november 2020).
With the new kit I can run 12 hours of Kharu @3800 CAS14 before getting an error, rock solid @3800 CAS16.
If I add the older kit, then comes the nightmare... can't even run 3800 CAS16, need to raise them up to CAS18.
That's absolutely a non sense, unless I'm missing some specific BIOS setting for 4 DIMMs configurations... but if they exist, I guess Calculator would have shown them.

So, my final word is the same: those BIOS are HORRIBLE for 4 DIMMs rig.

Gonna give a try to v2702, but I guess nothing will improve.

Baio

Hey there buddy,

I'm running 4 single sticks of GTZR or whatever the mem is, 3800 CL14. Two kits.

So try following:

Push there 2701 BiOS, clear CMOS, set leave everything as it is, try this:
1. pick D.O.C.P. for RAM.
2. downclock RAM to 3200 MHz
3. pick 1600 MHz FCLK
4. check out whether the timings autodetected by BiOS's DB fit the description, at least first five values or whatever.

Boot it.