Hello everyone.
I'm not quite sure that the following is an issue or not. Some say it is, some not. Waiting for 9th gen prices to go down a bit, i installed a new i5 8400 on my Z390 Phantom Gaming board. Now i know this is a locked CPU, but it does good in everyday use and is far from becoming a bottleneck for my Sapphire RX 580 Nitro+
The problem: the CPU is not turbo-boosting to 3.9GHz (with 2 cores loaded) or 4GHz (with 1 core loaded); i see only 3.8GHz max with CPUID HW monitor.
An interesting detail is that with the factory BIOS IT DID TURBO to 3.9GHz. Now my board has v1.30 and bye bye 3.9/4GHz boost. The web shows other desktops having this issue, while others don't.
What i've tried so far: iGPU disabled, ring-core multiplier offset disabled, Intel Speed Shift Enabled (so the CPU can control itself, not the bloody Win10 with it's questionable updates), a little bump to CPU voltage and power limit (the Z390 allows this even if the CPU is locked) => no luck bringing back the boost to 3.9, not to mention boost to 4GHz wich i never saw happening in the first place.
The only answer to this issue others are also having that i've seen on the interwebs is: "your CPU is boosting as it should be, it will only boost to 3.9GHz or 4GHz with 2 or 1 cores loaded, wich almost never happens".
To this answer i say: WRONG! I can load how many cores i want in a controlled enviroment. And why some 8400s do, and some don't? Why did mine used to, and now it doesn't?
Temporary solution: i BCLK OC'd the sucker to 102.7mhz (3905 mhz all-cores Turbo) but i don't like this. I want it to work as it should, and as it used to..
I'm not quite sure that the following is an issue or not. Some say it is, some not. Waiting for 9th gen prices to go down a bit, i installed a new i5 8400 on my Z390 Phantom Gaming board. Now i know this is a locked CPU, but it does good in everyday use and is far from becoming a bottleneck for my Sapphire RX 580 Nitro+
The problem: the CPU is not turbo-boosting to 3.9GHz (with 2 cores loaded) or 4GHz (with 1 core loaded); i see only 3.8GHz max with CPUID HW monitor.
An interesting detail is that with the factory BIOS IT DID TURBO to 3.9GHz. Now my board has v1.30 and bye bye 3.9/4GHz boost. The web shows other desktops having this issue, while others don't.
What i've tried so far: iGPU disabled, ring-core multiplier offset disabled, Intel Speed Shift Enabled (so the CPU can control itself, not the bloody Win10 with it's questionable updates), a little bump to CPU voltage and power limit (the Z390 allows this even if the CPU is locked) => no luck bringing back the boost to 3.9, not to mention boost to 4GHz wich i never saw happening in the first place.
The only answer to this issue others are also having that i've seen on the interwebs is: "your CPU is boosting as it should be, it will only boost to 3.9GHz or 4GHz with 2 or 1 cores loaded, wich almost never happens".
To this answer i say: WRONG! I can load how many cores i want in a controlled enviroment. And why some 8400s do, and some don't? Why did mine used to, and now it doesn't?
Temporary solution: i BCLK OC'd the sucker to 102.7mhz (3905 mhz all-cores Turbo) but i don't like this. I want it to work as it should, and as it used to..
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