I2500k Turbo Boost Not Working?

So I've seen some of these threads around, but no solution that worked for me. I have an i5 2500k with a GIGABYTE GA-Z68XP-UD3 motherboard. The highest clock speed I see in HWinfo is 34x, which happens if I am in high performance power mode, or if I load my CPU in balanced power. If I run a Prime95 1 thread test, my CPU multiplier won't go any higher than 34x. I thought that this processor was supposed to go to 37x, and in my bios settings, I see that the turbo multiplier for 1 thread is set at 37, why doesn't it work and what can I do to fix it?
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More about i2500k turbo boost working
  1. Turbo Boost is based on the TDP limit. If your CPU is within the TDP limit set then it will Turbo Boost it. If its too close or beyond it, it wont. Prime 95 really pushes CPUs. While most high load will push a CPU, Prime 95 will push CPUs well beyon what normal laod is. I would suggest running a light game in windowed mode and see what happens rather than Prime 95.
  2. jimmysmitty said:
    Turbo Boost is based on the TDP limit. If your CPU is within the TDP limit set then it will Turbo Boost it. If its too close or beyond it, it wont. Prime 95 really pushes CPUs. While most high load will push a CPU, Prime 95 will push CPUs well beyon what normal laod is. I would suggest running a light game in windowed mode and see what happens rather than Prime 95.


    I tried a light game, nothing. The thing just won't turbo over 3.4 GHZ. I had loaded the "optimized defaults" on my mobo, but everyone thing in the bios seems normal. Any other ideas?
  3. What are your temps? Does it ever idle at 1.6ghz? Are you sure there's no background process using resources?
  4. You could also just OC to 3.7 and use Speedstep for a little performance boost without too much more heat, noise, or power consumption.
  5. Thanks for everyone's help. I figured it out though, my Gigabyte motherboard had an old bios version on it. I updated and now it works perfectly.
  6. i have intel dh67cl mobo and i5 2500k i donwload the intel turbo boost gadget and when i play game in window mode it shows clock up to 3.6 normaly and some time push up to 3.7
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