X370 Gaming K4 - new BIOS with AGESA 1.0.0.6&a

Is that with XMP enabled or disabled?

If it's enabled, try with XMP disabled, and set timings manually.

I'd recommend you not use Prime95 & Furmark.

Both stress your computer beyond regular usage and will prematurely wear on your parts.

24hrs prime95 stress tests of the past (I did them too) just aren't necessary in my opinion.

The way I test stability these days is to leave the system on 24/7 with no load, an unstable system will crash/freeze/etc., and log things in the Windows event logs if there are issues.

For immediate stability testing I like to run synthetic benchmarks on loop for a few runs, 3DMark stress runs are good, but a variety of benchmarks are useful, as they stress different parts of your system.

That along with some CPU intensive stuff like Blender, and Cinebench etc.

Any memory tests will be good too, like Win10 has a memory testing utility built in, which reboots your computer and runs for many hours.

I refuse to believe that tools like FurMark are the defacto ways to determine stability.  If you run FurMark in conjunction with other stress testers, there's a good chance you can crash and cause issues with a fully stock and stable computer off the shelf.

They're not without their issues.

It's good to see another person getting good results moving RAM to the A1/B1 slots.  Can't wait to try it out this weekend.

Cheers.

Hi,

I'm surprised too about the vcore needed to achieve 3.8Ghz. I've checked it in UEFI hw monitor, HWinfo and CPU-z, and it's the same reading. I added a bit of offset to vcore on top of psate0's default 1.18xx, so I guess it's true. SoC voltage is low too at 0.89v.

I think my 1700 has the potential to be a good overclocker, but in contrast have a weak IMC. I've read on other forums some guys had tested several Ryzen CPUs, and their conclusion was that the good core overclockers can't reach 3200Mhz on memory, and those weaker on core OC can easily reach 3200 DDR4. But AMD itself said all R7 can reach at least 3600Mhz on the IMC so... May be we have two silicon lotteries to search for now :-) I don't know.

Temps are normal under load at 3.8: ~65C on Aida64 stress test, ~55C while gaming.

About prime95 and Furmark benching together, the only reason I can run both at the same time (and a limited time, 1 hour max) is to test PSU's power delivery. I think these two are over demanding for my needs, stability speaking. I had systems in the past, which were not prime stable, but ran rock stable at all my full load demands. But, each one have different stability needs so....

Another user with memories on A1/B1, so I'm forced to try this weekend :-) 

@Wardog: Any comments from Asrock about why some memory kits runs better on A1/B1 than the recommended A2/B2 on the X370 K4? Thanks.