F5F Stay Refreshed Hardware Desktop OC installs i7-4790K on MSI Z97 PC Mate but encounters odd problems with VCore, C-states, and slow performance.

OC installs i7-4790K on MSI Z97 PC Mate but encounters odd problems with VCore, C-states, and slow performance.

OC installs i7-4790K on MSI Z97 PC Mate but encounters odd problems with VCore, C-states, and slow performance.

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Bliep2
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06-23-2016, 10:11 PM
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Hey there! I’m trying to push this i7-4790K to higher speeds on an MSI Z97 PC Mate board, but I’m running into some puzzling problems. I’ve managed to get it stable before with a G3258 processor in the BIOS, so I’m not starting from scratch. Here’s what’s been happening:

1. The voltage readings don’t seem to line up. My CPU’s VCore stays around 0.9 volts, even though I set it higher (like 1.25V) and changed the BIOS settings. My Cinebench R23 score jumped from 4865 at 4.0GHz to 5250 at 4.5GHz, but HWMonitor still shows the VCore near 0.9V. The VID value the CPU claims is 1.20V, which matches what I set in BIOS. So why isn’t the board actually sending that power?

2. I’m not sure why the motherboard isn’t delivering the VID it expects. Since this board lacks an LLC controller, fixing voltage droop through that path isn’t possible. I’m considering switching to adaptive+offset mode in the BIOS instead of overriding directly.

3. Raising the VCCIN from 1.80V to 1.90V didn’t help much. Disabling Intel C-states caused my system to crash within seconds during benchmarking.

4. Changing the Ring voltage to 1.15V seemed to stabilize things in AIDA64 for a while, but I still faced crashes under load.

5. There’s something odd about the 4.5GHz run: I accidentally turned on Intel C-states and set the limit to C6 (deep power saving). That caused my system to fail within five seconds of a full load test.

6. Later, I tried OC Genie (OC OEM) which ran the CPU at 1.20V and kept things stable for over 45 minutes. But even then, I couldn’t maintain it at 4.6GHz consistently—crashing quickly when stress was applied.

In short, my VCore is stuck low despite BIOS adjustments, and disabling C-states breaks the stability I get with OC Genie. The motherboard’s lack of LLC makes it tricky to manage voltage properly. Maybe experimenting with different voltage settings or checking for firmware updates could help. Let me know what you think!
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B
Bliep2
06-23-2016, 10:11 PM #1

Hey there! I’m trying to push this i7-4790K to higher speeds on an MSI Z97 PC Mate board, but I’m running into some puzzling problems. I’ve managed to get it stable before with a G3258 processor in the BIOS, so I’m not starting from scratch. Here’s what’s been happening:

1. The voltage readings don’t seem to line up. My CPU’s VCore stays around 0.9 volts, even though I set it higher (like 1.25V) and changed the BIOS settings. My Cinebench R23 score jumped from 4865 at 4.0GHz to 5250 at 4.5GHz, but HWMonitor still shows the VCore near 0.9V. The VID value the CPU claims is 1.20V, which matches what I set in BIOS. So why isn’t the board actually sending that power?

2. I’m not sure why the motherboard isn’t delivering the VID it expects. Since this board lacks an LLC controller, fixing voltage droop through that path isn’t possible. I’m considering switching to adaptive+offset mode in the BIOS instead of overriding directly.

3. Raising the VCCIN from 1.80V to 1.90V didn’t help much. Disabling Intel C-states caused my system to crash within seconds during benchmarking.

4. Changing the Ring voltage to 1.15V seemed to stabilize things in AIDA64 for a while, but I still faced crashes under load.

5. There’s something odd about the 4.5GHz run: I accidentally turned on Intel C-states and set the limit to C6 (deep power saving). That caused my system to fail within five seconds of a full load test.

6. Later, I tried OC Genie (OC OEM) which ran the CPU at 1.20V and kept things stable for over 45 minutes. But even then, I couldn’t maintain it at 4.6GHz consistently—crashing quickly when stress was applied.

In short, my VCore is stuck low despite BIOS adjustments, and disabling C-states breaks the stability I get with OC Genie. The motherboard’s lack of LLC makes it tricky to manage voltage properly. Maybe experimenting with different voltage settings or checking for firmware updates could help. Let me know what you think!

Reply
Reply