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4.0 OC on 2500K OK with my rig @ stock Voltage?

I'm wondering if 4.0 is safe with my rig's CM 212 EVO, & also if I should leave turbo on or off??

Here is my rig:

EVGA GeForce GTX 570

Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost)

Western Digital Caviar Black 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5"

ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

Antec High Current Gamer Series HCG-750 750W ATX12V v2.3 / EPS12V v2.91

CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

Crucial M4 CT064M4SSD2 2.5" 64GB SATA III MLC Internal Solid State Drive

COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2

LIAN LI Lancool PC-K63 Black Steel ATX Mid Tower Computer Case


All advice is welcome, I'm new to this....
9 answers Last reply Best Answer
More about 2500k stock voltage
  1. Shouldn't be a problem. 4.5ghz on stock would not be unfeasible. Might as well turn Turbo off.
  2. I can hit 4.4 ghz with turbo off on my i5-2500k with stock voltage, every cpu is different though.
  3. u can leavre turbo on it doesnt matt6er ita actually better when its on for a o.c leave turbo on and set turbo to by all cores in the bios
  4. As long as your temps are fine, shouldn't be a problem at all. I'd guess that mot 2500Ks can do 4 ghz on stock. My 2600K will do 4.4 at stock
  5. Thanks everyone, I guess my biggest question is why leave the Turbo "On", when I'm going to OC past the Turbo's 3.8 Ghz potential?

    EDIT: Not everyone said to leave Turbo "on", most said to leave it off. What is the difference?
  6. I honestly don't have anything on which to base my recommendation. I've just heard of people leaving it off. It shouldn't have much of an effect either way.
  7. This is what Asus testing found in the very early days of SB.

    1. Approximately 50% of CPUs can go up to 4.4~4.5 GHz
    2. Approximately 40% of CPUs can go up to 4.6~4.7 GHz
    3. Approximately 10% of CPUs can go up to 4.8~5 GHz (50+ multipliers are about 2% of this group)

    Subject tot he above.....

    4.4 - 4.5 Ghz easily doable with Hyper 212
    4.6 - 4.7 Ghz doable with Hyper 612 or Scythe Mugen 3
    4.8 - 5.0 Ghz doable with Silver Arrow or Phanteks

    I leave it boost on in every build.
  8. Best answer
    justsumguy_22 said:
    I'm wondering if 4.0 is safe with my rig's CM 212 EVO, & also if I should leave turbo on or off??

    Here is my rig:

    EVGA GeForce GTX 570

    Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost)

    Western Digital Caviar Black 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5"

    ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

    Antec High Current Gamer Series HCG-750 750W ATX12V v2.3 / EPS12V v2.91

    CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

    Crucial M4 CT064M4SSD2 2.5" 64GB SATA III MLC Internal Solid State Drive

    COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2

    LIAN LI Lancool PC-K63 Black Steel ATX Mid Tower Computer Case


    All advice is welcome, I'm new to this....



    I overclocked my 2500k to 4.2 by setting all 4 core turbo settings to 4.2 ghz ( was at 4.5 but backed it off )
    .....when browsing
    it sits at 1600 mhz....but when a demand is placed on the cpu it jumps to 4200....here's
    a nice article that taught me how to do it
    http://forums.legitreviews.com/about33850.html
  9. Best answer selected by justsumguy_22.
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