@Amir007; I am quoting your post in spoiler as it is very long. I am neither defending Asrock nor agreeing with you completely. Just take this another point of view.
I understand your disappointment with Asrock x370 Taichi. I have had problems with my build too. But I am not sure if Asrock is to blame here.
1.) CPU temps got reported at 256°C for an extremely short moment.
2.) I got really high temps on my Ryzen 1700 CPU: vcore 1.25; 3700MHz; LLC2 or LLC3... close to 80°C after several hourse of Prime95 or IntelBurnTest. I tried lots of different things: Reseating the cooler and reapplying the thermal paste, trying different coolers but all of my tries to no avail. But when I increased the voltage with "offset" mode, the highest temperature (the peak) did not increase at all. Very strange.
3.) If I use "fixed voltage" and set my voltage over 1.35v, the computer significant lowers my CPU clock. Most likely the X370 Taichi is to blame here. I found a workaround by researching the internet: Use the offset mode. Despite the fact that I solved it, it is still annoying to have this bug.
4.) I was never able to get 4.0GHz stable with my Ryzen 1700, even at 1.45v. The CPU can be the cause here. Again, just presenting what I experienced.
But all things above considered, the thing is that most X370 motherboards have similar or the same problems. As this is a new chipset, I can understand problems can more often exist but they got solved it over time with BIOS updates. However, there are/is issue(s) that persist(s) and this is disappointing.
As for my third point (#3), there is still no fix from Asrock as of 3.20 BIOS.
As for your "black screen" or 00 thing, it can also be your RAM sticks. I am not sure tough because black screen when playing games etc. usually means the CPU stability is to blame.
Originally Posted by Amir007 Warning: Spoiler! (Click to show)
Hey kmac - Do yourself a favor...(I should've listen to 1 or 2 of the guys on here who told me from the get-go and before my chin hair turned gray) and go exchange your ASSrock Taicrappy mobo for another top of the line motherboard such as Asus CROSSHAIR VI Hero X370. I did a lot of research last night and BOY I'm a such happy camper now. Not sure if you read my recent ASSrock issues I was having in the past few days but If i hadn't done benches via CPU-Z and Cinebech I wouldn't have discovered that my 1800x was running at 4 core performance. This was by far the single worst god damn experience I've ever had with a motherboard. That Taichi + 1800x was a nightmare to get it to work stable in default settings. Why should ANYONE need to play around with the bios to get a stable working environment without the OC attempts? ASSrock is aware of this issue and it seems as if they are not sure what they are doing or if it's fixable.
It is almost as if I somehow booted up using x1800 on an Intel Assrock Taichi mobo, no joke man. I too was getting exactly what you are getting when playing games. My monitor would just turn off and would get a "00" debug code, this means CPU isn't working right due to a flaky motherboard's bios. This would also happen if/when I would run Cinebench, my screen would freeze and black screen and 00 debug code. The funny part is I had everything running at default. My memory was at stock 2400mhz and tested stable in memtest86 for 6 hours so memory was fine and most likely the CPU was fine too. Don't waste your time and return that pathetic buggy motherboard. I kind a feel sorry for people who invested in this mobo and i bet half of owners probably are not even aware their 1800x is running half speed. lol I agree the mobo looks good and looks good on paper and you get a lot for the money but if the soul of the mobo (bios) isn't ripe then it has no stable personality. I felt like i was working with a mobo with down syndrome. Return that POS dude. It's not your 1080 bcuz i have a 1080 too and runs perfectly. I can guarantee you if you swap it out tomorrow all of your troubles will go away. I mean, even chew dude on here proved the mobo needs a lot of fixing, and most likely it'll probably need a new PCB revision as Microcenter had 6 of them for sale as open box and none in stock as new. I asked the agent there and he even said that they are not sure why they haven't gotten any new stock for a over a month now. You know why? ASSrock probably knows they were selling bricks/lemons. They wasted so many hours of my time I feel like suing them for it. God damn Pathetic.
Look at me now:
Notice how I'm not anymore getting the multi bug at 550Mhz like i was before during 100% load. And also my max turbo is also working perfectly at 4.1Ghz as well. This wasn't present on the ASSfhuckachi at all.
Microcenter has a very nice deal going now - even better than when I got the Taichi. You receive a $50 instant discount if u purchase mobo+cpu. I ended up returning the x1800 as well and got me a full microcenter store credit. I ended up paying only $24 more to get this fully operational motherboard + 1800x. Total was $539.98 + Tax brand new and sealed. You will not need to mess around with the bios to be able to run 100% stable. Remove it from your case, dump it back in the box and divorce it.
Here are my BIOS settings for my R7 1700 and X370 Taichi and Trident Z 3200 CL14 2*8GB (16GB):
OC Tweaker settings:
Overclock mode (do not confuse with "voltage mode"): Auto
CPU Frequency and Voltage Change: Manual
CPU Frequency: 3900MHz
CPU Voltage: Something like 1.18; this is the default value when you change "CPU Frequency and Voltage Change" to "Manual"; I will report back when I get the exact number later (changing this value has no effect as far as I can remember.)
Voltage mode: OC Mode
CPU LLC: 2
CPU Vcore voltage: Offset mode
Offset voltage: 0.25v (With this value, various software under windows 10 reports my voltage is 1.425v.
Also DRAM Voltage is set to 1.35 after choosing XMP Profile (which is normal)
CPU Configuration (under "Advanced)":
Everything is disabled here.
Zen Common Options:
Core Performance Boost: Disabled
Global C-state Control: Disabled
RAM Settings under OC Tweaker settings: (I chose the XMP profile but then only changed these two settings)
Gear Down Mode: Disabled
Power Down Mode: Disabled
Every p-state except p-state0 is disabled.