CPU Multiplier stuck at 15x with fixed VCore

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   Hi,
I purchased an AsRock Taichi Motherboard today, flashed it to the latest 2.4 bios, installed a new Ryzen 1700 CPU and after testing some minor overclocks, have the following issue.

I can overclock if the CPU VCORE voltage is set to auto. If I change this to fixed voltage (it does not matter what the voltage is), the CPU reverts to a locked 15.5x multiplier, and runs at 1549.64MHz. Windows10 (and BIOS) reports the correct clock speed, however checking in CPU-Z (and performance in benchmarks) confirms that the CPU is running at the lower clock speed.

I have reflashed the BIOS multiple times, including reverting to an older BIOS, and the issue remains.

Thanks,

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ily9452so Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Jun 2017 Status: Offline Points: 6	Post Options Post Reply Quote ily9452so Report Post Thanks(0) Quote Reply Topic: CPU Multiplier stuck at 15x with fixed VCore Posted: 11 Jul 2017 at 11:14am
	Hi, I purchased an AsRock Taichi Motherboard today, flashed it to the latest 2.4 bios, installed a new Ryzen 1700 CPU and after testing some minor overclocks, have the following issue. I can overclock if the CPU VCORE voltage is set to auto. If I change this to fixed voltage (it does not matter what the voltage is), the CPU reverts to a locked 15.5x multiplier, and runs at 1549.64MHz. Windows10 (and BIOS) reports the correct clock speed, however checking in CPU-Z (and performance in benchmarks) confirms that the CPU is running at the lower clock speed. I have reflashed the BIOS multiple times, including reverting to an older BIOS, and the issue remains. Thanks,

wardog Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 15 Jul 2015 Status: Offline Points: 6447	Post Options Post Reply Quote wardog Report Post Thanks(0) Quote Reply Posted: 11 Jul 2017 at 11:30am
	Check online that you have the LATEST versions of monitoring programs. You lost me when you say you're putting more faith in benchmarks, and not the BIOS. It can't be both, and my money is riding on the BIOS.

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8532	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 11 Jul 2017 at 5:20pm
	Dear ily9452so, Greetings, this is ASRock TSD. We install the same system configuration to perform the test. [Config.] BIOS: P2.40 CPU: Ryzen 1700 OS: Windows 10 64-bit When overclocking the CPU to 3.2GHz and setting the Fixed Voltage at 1.2V. The BIOS could display the correct frequency, and so does CPU-Z. Please refer to the test results: X370 Taichi BIOS P2.40: CPU 3.2GHz and 1.2 Fixed Voltage: CPU-Z Core Speed 3199.25MHz: So we provide the following steps for verifying. 1. Please enter the BIOS setup then press [F9] to load BIOS default setting. 2. Set up the CPU frequency and Fixed voltage. 3. Execute "prime 95" or some loading programs. 4. Download the latest CPU-Z for checking. At last, if the symptom stills the same, please change another CPU to verify. Thanks! All the best, ASRock TSD

Adam1987 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Jul 2017 Status: Offline Points: 7	Post Options Post Reply Quote Adam1987 Report Post Thanks(0) Quote Reply Posted: 13 Jul 2017 at 7:02am
	Im confused with your solution...Im having the same issue as him. I can OC as long as vcore is set to auto or below a certain V. I had a stable 3.8ghz @ 1.3v but now anything above 3.45ghz which is the highest I can go on auto I get reverted back to 1.55ghz. My bios shows the correct speed but every other test/program shows 1.55ghz. There is something in your bois that is throttling it down.
	x370 Taichi - ryzen 1700 - flare x 3200 - 750 PSU - r9 390