Your CPU is limiting performance due to certain conditions.
Your CPU is limiting performance due to certain conditions.
Motherboard: Biostar A88MQ
GPU: Radeon R7 360
PSU: EVGA SuperNOVA 650
RAM: 8GB 1600MHz Ballistix
CPU: A8 6600K (3.9GHz)
I bought the scythe fuma to avoid cooling issues, and I haven’t experienced any problems.
My CPU runs stable at 4.5GHz @ 1.381V.
At 4.6GHz it boots at 1.4V but crashes after about five minutes during a stress test.
Increasing the voltage by 0.062V brings the frequency down to 3.6GHz.
http://imgur.com/a/QZNoT
Any further adjustments cause more throttling.
I’ve been dealing with this issue for roughly a week now. After extensive research and other discussions, I suspect my VRM might be overheating. I bought some copper heatsinks and installed them.
http://imgur.com/U2qR9tP
What could be causing this? The only BIOS setting I have is C6, which is currently disabled—should it be enabled?
That's quite unusual. I'm not very familiar with AMD. I have an FX 8320 build but I keep it at stock and don't experiment much. I focus on overclocking while using Intel for everything else. I wouldn't be able to help you too much. I'd just recommend lowering the overclock back to 4.5 and leaving it that way.
Tell me about your CPU temperatures during stress tests. Also, the cooling for the VRM isn't sufficient, causing those components to get excessively hot. In fact, I've experienced VRM overheating and had to stop overclocking. I have a fairly large MSI heatsink installed on them.
My thermal margin stays at 70 idle and never drops below 45 full load even after extended stress testing or gaming sessions. The heatsinks remain cool, so you wouldn’t notice the temperature rise.
KeelinTy :
VRM heatsinks feel cold to the touch? There seems to be something unusual about that, since they usually warm up after the computer is idle for a while. Why does this not make sense to me? Also, I’m confused about how 0.0062V can cause such a big drop. I just found out that tctl exists and AMD uses its own temperature scale, with C being just a unit, not a temperature. Do you know what this means for the BIOS temperature readings from the monitor utility? It shows values between 0 and 6 idle and 23-26 under maximum load. It also matches AMD Overdrive thermal margins. For example, if my thermal margin is 62-70°C, the monitor would show 0-8 idle, and if it’s 44-47°C, it would show 23-26 max load.
That's quite unusual. I'm not very familiar with AMD. I have an FX 8320 build but I keep it at stock and don't experiment much. I focus on overclocking while using Intel for everything else. I wouldn't be able to help you too much. I'd just recommend lowering the overclock back to 4.5 and leaving it that way.