en1gma_ Posted January 21, 2012 Posted January 21, 2012 (edited) Hi there, I recently built a new machine, ga-z68xp-ud4 mobo/i5 2500k cpu. I have overclocked it to 4.5ghz using these settings - Multiplier - 45x CPU PLL overvoltage - enabled (D2 stepping chip) Turbo Core - Enabled, all set to 45x and the TDP TDC settings both set at 300 CPU Vcore - 3.8v *EDIT - 1.38v All other settings are standard. With this setup, I get a max core temp of 68 degrees on a 1 hour stress test with OCCT, I have an Arctic 13 Pro cooler, bit of a compromise on performance for price and noise. Although my Vcore in BIOS is set to 3.8v CPU-Z reports a max of 1.404 - OCCT reported a minimum of 1.39v and a max of 1.42v during the stress test. Any opinions appreciated - cheers. Edited January 22, 2012 by en1gma_ Share this post Link to post Share on other sites More sharing options...
Stonerboy779 Posted January 22, 2012 Posted January 22, 2012 If you actually did have a vcore of 3.8 you would have cooked that CPU. 1.4v is more reasonable for a 4.5GHz OC on a 2500k you could possibly even drop that a bit. Can you take a pic of your settings in bios because there is no way vcore is 3.8v because that is well over even double the safe max for the CPU. Share this post Link to post Share on other sites More sharing options...
en1gma_ Posted January 22, 2012 Posted January 22, 2012 If you actually did have a vcore of 3.8 you would have cooked that CPU. 1.4v is more reasonable for a 4.5GHz OC on a 2500k you could possibly even drop that a bit. Can you take a pic of your settings in bios because there is no way vcore is 3.8v because that is well over even double the safe max for the CPU. Oh duh sorry, I meant 1.38. Cheers. Share this post Link to post Share on other sites More sharing options...
MJCRO Posted January 22, 2012 Posted January 22, 2012 Nice you got a Gigabyte board. You should be able to do 4.5 with less than 1.35v easy. You can disable Overvoltage, Turbo, Power ES, all that stuff. You don't even need LLC enabled either. Literally I set just the vcore and everything else to Auto, seems to work the best on my UD7. Share this post Link to post Share on other sites More sharing options...
Drdeath Posted January 22, 2012 Posted January 22, 2012 Nice you got a Gigabyte board. You should be able to do 4.5 with less than 1.35v easy. You can disable Overvoltage, Turbo, Power ES, all that stuff. You don't even need LLC enabled either. Literally I set just the vcore and everything else to Auto, seems to work the best on my UD7. On Sandybridge, Nothing has to be disabled except Turbo. Share this post Link to post Share on other sites More sharing options...
d6bmg Posted January 22, 2012 Posted January 22, 2012 What about the idle & load temperatures? Have you done any stress testing? Share this post Link to post Share on other sites More sharing options...
en1gma_ Posted January 22, 2012 Posted January 22, 2012 What about the idle & load temperatures? Have you done any stress testing? Idle sits around 38-40 degrees on all 4 cores, I did a 1 hour stress test with OCCT, max temp of 62. Share this post Link to post Share on other sites More sharing options...
d6bmg Posted January 23, 2012 Posted January 23, 2012 ^ Then everything is very good for you & that 4.6GHz would be very much stable IMO. Share this post Link to post Share on other sites More sharing options...
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