oveclocking amd fx8350
oveclocking amd fx8350
It's my first post here, so please forgive any errors. I'm using an ASUS Crosshair V Formula Z motherboard and attempting to overclock my AMD FX8350. The maximum stable overclock I've achieved is 4.7 GHz with 1.506250 volts and a temperature of 75 degrees using Prime95. LLD is set to ultra high. When I try 4.8 GHz, the voltage has to be increased but temperatures rise above 80°C in just a few seconds. My goal is to reach 5.0 GHz, but it seems challenging. Is there something wrong with the chip, PSU, or any other component?
Nothing appears to be amiss with your chip. Your 8350 has also achieved 4.7Ghz and cannot exceed that. Some chips struggle to hit the 4.8-5.0Ghz range. A factor to keep in mind is: although the NH D14 is an excellent air cooler and performs well, it doesn’t match the performance of a water cooler. My 8350, running at 4.7Ghz with a H100i, reaches a maximum temperature of 62-63ºC in a 25ºC room while running prime95. AMD recommends that 62ºC is the safe upper limit for your chip to maintain stability and longevity. Your current temperature is 75ºC, which is 3ºC higher if you remove a 10ºC "safe zone" from the maximum, bringing it down to about 72ºC as the true limit.
So:
1) If you plan to run your 8350 at 4.7Ghz regularly, consider getting a water cooler. Higher temperatures also reduce chip stability. You might lower the vCore slightly or attempt to push more voltage to reach 4.8Ghz, giving you more headroom for temperature increases.
2) If you aim for 4.8Ghz, given your current high voltages, it’s wise to slightly increase the NB and HT link voltages and frequencies (they’re already at 2400Mhz).
3) Just a thought: are those additional 100Mhz on the CPU really worth the extra effort? At 4.7Ghz it’s already a solid overclock.
GustavoGimpel explains that your chip is functioning properly at 4.7Ghz and cannot exceed it. He notes that some chips struggle to reach 4.8-5.0Ghz. He mentions that while the NH D14 air cooler works well, it isn't as effective as a water cooler. At 4.7Ghz with a H100i cooler, your chip reaches around 62-63ºC in a 25ºC room while running prime95. AMD recommends keeping the maximum temperature at 62ºC for stability and longevity. Your current temperature is 75ºC, which is 3ºC higher if you exclude a 10ºC safety buffer, making the true limit about 72ºC.
He suggests several points:
1) If you plan to run at 4.7Ghz regularly, consider getting a water cooler for better performance and stability. Higher temperatures can also affect chip stability.
2) To try achieving 4.8Ghz, he advises slightly adjusting the NB and HT link voltages and frequencies (they are already set at 2400Mhz).
3) He questions whether the extra 100Mhz on the CPU is worth the extra effort, noting that 4.7Ghz is already a solid overclock.
I own the same MMO and CPU as you and I, running at 4.68 with 1.344 V via the FSB. Perhaps adjust your overclock settings, since their advice suggests not increasing voltage further due to high temperatures. Also, consider using overdrive for better temperature monitoring—it's the most reliable method.
http://www.overclock.net/t/1348623/amd-b...otherboard
They also mentioned it was very helpful for my own overclocking efforts.
I have the same motherboard and CPU as you and I, running at 4.68 with 1.344 V via the FSB. Perhaps adjust your overclock settings, since they mentioned not to increase voltage further due to high temperatures. Also, consider using overdrive for better temperature monitoring—it's the most accurate method.
Read that too; it really helped me with overclocking.
You can achieve 4.8Ghz with 1.375V to CPU and 1.175V to northbridge. If you adjust the multiplier to 23.5, you won't need to raise the bus frequency beyond 205. Your memory frequency will also improve, and it's important to keep your AMD overdrive temperature above 10°C. You might have to boost the voltage slightly since CPUs vary.
Fx-8350 is an 8-core chip operating at 4.0Ghz, while NH-D14 provides sufficient performance to reach 5.1Ghz with specific voltage settings and a multiplier of 25.5. The FSB operates at 201 MHz. There are four dimms producing significant heat, so increasing the FSB frequency isn't advised in this configuration.