FX-6300 4.0GHz stabilty
FX-6300 4.0GHz stabilty
So if you increase the overclock to 4.0GHz with 1.35V in Prime95 after half a minute, your PC restarts and stays stable for an hour without crashes or restarts. However, when you set the voltage to 1.375V, it becomes very hot (temperature reaches 64°C) and starts throttling even though the throttle is off. It runs steadily at 60fps for a while, then drops to 20-30 for a few seconds before returning to 60+ again. This behavior didn’t happen when you first overclocked with the cooler installed, but appeared after two months. If you run the CPU at 1.35GHz with 4.0GHz and it’s unstable in Prime95, but works well in games, why does this happen?
Initially, your system doesn’t maintain full stability unless it’s powered at 1.375V. The issues you’re seeing in games at that voltage are likely due to thermal throttling, which happens when the processor overheats and approaches or exceeds 70°C. Do you have an aftermarket cooler? What kind of airflow does your tower provide? How many case fans are installed?
The reason your system passes Prime 95 at 1.35V but runs smoothly in games is that nothing will stress your CPU more than Prime 95 testing. No game will force the CPU to its limits. However, a serious overclocker would likely report instability at 1.35V because it won’t meet Prime 95 requirements. If you plan to do video editing or other CPU-heavy tasks for extended periods, it might trigger a BSOD due to instability at that voltage.
The best approach is to inspect the thermal paste on your cooler—possibly reapplying it properly using the pea method with a high-quality compound like AS5, MX-2, or MX-4. Also, let me know what aftermarket cooler you’re using. Models such as the Hyper 212 EVO should handle this overclock well, especially if you configure fans on both sides of the heat sink in a push-pull setup.
Regarding your tower type—whether it’s full or mid-tower—and your overall cooling arrangement, achieving full stability requires setting your Vcore to 1.375V and ensuring your CPU is adequately cooled to operate there.
Initially, your setup doesn’t guarantee full stability unless it’s powered at 1.375V. The issues you’re seeing in games at that voltage are likely due to thermal throttling as the processor overheats, nearing or exceeding 70°C. Do you have an aftermarket cooler? What kind of airflow does your tower provide? How many case fans are installed?
The reason you can play Prime 95 smoothly at 1.35V while others struggle is that no game will demand excessive CPU power. However, a serious overclocker might still report instability at this voltage. If you plan to do intensive tasks like video editing for a while, be aware it could trigger a BSOD.
The best approach is to verify the thermal paste on your cooler—possibly reapplying with the pea method using quality paste such as AS5, MX-2, or MX-4. Also, clarify what aftermarket cooler you’re using. A model like the Hyper 212 EVO should handle this overclock well, especially if you configure fans on both sides of the heat sink in a push-pull setup.
Regarding your tower type, are you using a full tower or a mid-tower? How does your overall cooling system look? For maximum stability, your Vcore should be set to 1.375V and your CPU must be adequately cooled to reach that temperature.
UniformGreen :
Redneck5439 :
First, your system isn’t completely stable unless it’s powered at 1.375V. The issue you’re seeing in games at that voltage is likely due to thermal throttling, which happens when the processor overheats and approaches or exceeds 70°C. What aftermarket cooler do you have? What kind of airflow does your tower provide? How many case fans are installed?
The fact that your system passes Prime 95 at 1.35V but still runs smoothly in games is a good sign—no game will stress the CPU more than Prime 95 would. A true overclocker might still face problems because it won’t pass Prime 95. If you plan to do video editing or other CPU-heavy tasks for extended periods, it could trigger a BSOD.
The best approach is to inspect the thermal paste on your cooler (reapply if needed) to ensure it’s properly applied—either too much or too little. Use the pea method and opt for high-quality compounds like AS5, MX-2, or MX-4. Also, let me know what aftermarket cooler you’re using. A model like the Hyper 212 EVO should handle the overclock easily, especially with a push-pull fan setup on both sides of the heat sink.
Regarding your tower configuration, whether it’s full or mid-tower, and your overall cooling setup, aim for a Vcore of 1.375V and ensure your CPU is adequately cooled to run there stably.
Earlier, when I bought this cooler about 1.5 months ago, it performed well (4.0GHz at 1.375V, stable in Prime95 and games). However, a week ago it began throttling at only 64°C, with temperatures rising from 58°C to the max of 64°C during throttling. I don’t think replacing the thermal paste is necessary since it’s new. My case is Zalman Z3 Plus with four fans, and the CPU cooler is a Zalman CNPS8X Optima.
If you’re experiencing problems now, we can check for common warning signs. What is your power supply unit—brand, voltage rating, wattage? Have you run monitoring tools like HWmonitor to observe fan speeds under load? Does the fan speed increase when throttling occurs? Most FX CPUs don’t thermal throttle until they reach over 70°C, but individual components can vary.
Redneck5439 :
First of all, your setup isn't completely stable unless it's powered at 1.375V. The issue you're seeing in games at that voltage is likely due to thermal throttling, which happens when the processor gets too hot and approaches or exceeds 70°C. What aftermarket cooler do you have? What kind of airflow does your tower provide? How many case fans are installed?
The fact that your system passes Prime 95 at 1.35V but still runs smoothly in games is a good sign—no game will stress the CPU more than Prime 95 would. A real overclocker might still face problems there because it won't meet Prime 95 requirements. If you plan to do video editing or other heavy tasks for extended periods, it could lead to a BSOD.
The best approach is to inspect the thermal paste on your cooler (reapply if needed) to ensure it's properly applied—either too much or too little. Use a quality compound like AS5, MX-2, or MX-4 when reapplying. Also, know what aftermarket cooler you're using. For example, a Hyper 212 EVO should handle the overclock easily, especially with a push-pull fan setup on both sides of the heat sink.
Regarding your tower configuration, whether it's full or mid-tower, and your overall cooling design matters. To achieve full stability, your Vcore should be set to 1.375V, and your CPU must be adequately cooled to run there.
When I first installed this cooler about a month ago, it performed well (4.0GHz at 1.375V with stable temps around 57-58°C in Prime95 and 54-55°C in games). But last week it began throttling at only 64°C... The temperatures jumped from 58°C to a maximum of 64°C during throttling. I don’t think the thermal paste needs replacing since it’s new. Also, my case is a Zalman Z3 Plus with four fans, and the CPU cooler is a Zalman CNPS8X Optima.
If you mention that you started off fine but now face problems, we can identify some common warning signs. What is your power supply unit—brand, rating, wattage? Have you run monitoring tools like HWmonitor to check fan speeds under load? At what RPM does the CPU slow down? Does performance drop around thermal throttling? Most CPUs don’t start throttling until they reach over 70°C, but individual chips can vary.
I own a Sirtec High Power 600W (80+ bronze) that’s nearly two years old. The fan runs continuously. I set the clock to 3.9GHz and voltage to 1.35V to maintain stability without overheating the CPU. I’m puzzled by this behavior since I used the original cooler for six months with temperatures between 70-73°C and no throttling, yet now it starts throttling even after turning off thermal throttling in BIOS.
It could really be your PSU. FX processors usually consume a lot of power, and based on your GPU you might be hitting the PSU’s maximum capacity. Remember that just like other components, a PSU loses efficiency over time. For instance, the 1000W 80+ gold I had three years ago might now be around 800-900W. If your CPU isn’t getting the right voltage at a crucial moment, it could be the cause of the problem.
Your post suggests you might have a slightly damaged CPU. AMD FX should never be operated above 70°C for any duration. Exceeding this temperature, particularly for extended periods, risks harming the CPU—especially if it runs for several hours continuously.
The most affordable solution would be to improve CPU cooling and possibly add a second fan to your heat sink in a push-pull setup. This should reduce heat buildup and help detect thermal throttling. If the issue remains after better cooling, consider upgrading your PSU. After two years of heavy gaming, it’s likely the PSU has been stressed. If the CPU still suffers at 70-73°C for six months, you’ve probably caused significant damage.
The situation might actually come from your PSU. FX units usually require a lot of power, and if your GPU is near its limit depending on your GPU, you might hit maximum output. Remember that as the PSU gets older it becomes less efficient. For instance, a 1000W 80+ gold unit installed three years ago could now be around 800-900W. If your CPU isn’t getting the right voltage at a crucial time, that could be the cause.
Based on what you shared, a minor CPU damage is also possible. AMD FX processors shouldn’t be operated above 70°C for any duration. Exceeding this temperature risks harming the CPU, particularly after prolonged use.
The most affordable first step would be to improve CPU cooling and possibly add a second fan to your heat sink in a push-pull setup. This should reduce heat buildup and help detect thermal throttling. If the issue remains after better cooling, consider upgrading your PSU—intense gaming over two years can wear it down. If the problem continues, it’s likely you’ve already damaged the CPU by running it near 70–73°C for six months.
You wonder if a R7 260X is that demanding? It seems unlikely the stock cooler alone keeps it below 70°C. After updating the BIOS, the issue disappeared.
UniformGreen :
Redneck5439 :
It might actually be your PSU that's the issue. FX processors usually consume a lot of power from the start, and based on your GPU you could be hitting the maximum capacity of your PSU. Remember that just like other components, a PSU loses efficiency over time. For instance, the 1000W 80+ gold I had three years ago might now be around 800-900W. If your CPU isn't getting the right voltage at a crucial moment, it could be the reason behind what you're seeing.
Based on what you shared, a minor CPU damage could also be a factor. AMD FX processors should never be operated above 70°C for any duration. Exceeding this temperature, particularly after prolonged use, can harm the CPU.
The most affordable option to start with would be to improve CPU cooling and possibly add a second fan to your heat sink in a push-pull setup. This should reduce heat buildup and help detect thermal throttling. If the issue remains after better cooling, consider upgrading your PSU—intense gaming over two years can wear it down. If the problem continues, it's likely you've damaged your CPU by running it near 70-73°C for six months.
You're wondering if a R7 260X is that power-hungry? It seems surprising that stock cooling could keep it below 70°C... I updated the BIOS and the issue disappeared.
Also, don't forget you were using a R7 260X. To be honest, I haven't needed to update the BIOS in a while, so I didn't think about it. Nice call, and enjoy your gaming!