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  1. #1
    ROG Enthusiast Array Bal's Avatar
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    CPU Core Temp. reached 95°C overclocking Intel i4790k to 4500MHz, is this okay?

    Boosted CPU to 4500MHz and core voltage was 1.250v. Core Temp. got to max 95°C, when I started stress test prima95 + in-game Rocket League + streamed to twitch + opened a lot of apps (OBS, Streamlabs, Steam, Temp apps) + 5-6 pages in browser. (CPU usage was %100, game kept crashing every 2-3 minute)

    This is my rig:

    Asus ROG Swift PG278Q 27 inch Monitor (2560x1440)
    Samsung U28E590D 28-Inch 4K LED Monitor (3840 x 2160) running @2560x1440
    Intel Core i7-4790K CPU (Quad Core 4GHz, Socket H3 LGA-1150)
    Asus STRIX-GTX980-256 Bit Nvidia Gtx 980 Graphics Card (OC'ed to 1.495MHz @memory clock 7410- Voltage 1175- GPU Temp very stable and low)
    MAXIMUS VII FORMULA Z97 Motherboard
    Corsair Vengeance Pro Series 16GB (2x8GB) DDR3 2133Mhz CL11 XMP Performance Desktop Memory Kit
    Corsair AX860i 860W 80 Plus Platinum Power Supply Unit
    Corsair Obsidian Series 450D Windowed Mid-Tower ATX High Airflow Performance Computer Case
    SanDisk SSD PLUS Sata III 2.5-inch Internal SSD 120 GB
    SanDisk Extreme PRO SSD Sata III 2.5-inch Internal 480 GB
    SEAGATE NAS HDD Internal Hard Drive 5900 RPM SATA III NAS Support 3 TB
    Corsair Hydro Series H100i All-In-One 240mm Digital High Performance Rad Liquid Cooler for CPU
    1x Corsair Air Series AF140-LED 140mm Quiet Edition High Airflow LED Fan
    4x Corsair Air Series AF120-LED 120mm Quiet Edition High Airflow LED Fan
    NZXT 2m LED Cable 10 volts
    Asus DVD-RW Bulk Drive
    Windows 10 64Bit

    I had to pull it down to 4400MHz and lower voltage to 1.200 to stabilize. Now when I ran the stress test + everything at these values, i got max 87°C.

    Without stress test, temperature is much lower around 70°C or so. I wanna make it 4500MHz, would it be okay to go with it?
    Asus GTX 980 Strix OC III Intel Core I7-4790K 4GHz III Maximus VII Formula
    Corsair Vengeance Pro Rot 16GB (2x8GB) DDR3 2133 MHz III Rog Swift PG278Q




    True wisdom is in knowing you know nothing

  2. #2
    ROG Enthusiast Array Bal's Avatar
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    and one more question, is my PSU low for this rig? if i added a second GPU, would it carry on?
    Asus GTX 980 Strix OC III Intel Core I7-4790K 4GHz III Maximus VII Formula
    Corsair Vengeance Pro Rot 16GB (2x8GB) DDR3 2133 MHz III Rog Swift PG278Q




    True wisdom is in knowing you know nothing

  3. #3
    ROG Guru: Green Belt Array panzlock PC Specs
    panzlock PC Specs
    Laptop (Model)ASUS X553M, ASUS Zenpad 10 Z300M, ASUS X542BA-DH99
    MotherboardASUS P8Z68-V LX, ASUS Z170-A, ASUS ROG Strix B350-F Gaming
    ProcessorIntel i5-2500K, Intel i7-6700K, AMD Ryzen R7 1700
    Memory (part number)8GB Kingston 1333MhzDDR3 C9, 16GB G.Skill Aegis 3000Mhz DDR4 C16, 16GB G.Skill Trident Z 3200Mhz C16
    Graphics Card #1EVGA GTX 560Ti, ASUS ROG Strix GeForce GTX 1070 O8G OC, Sapphire Nitro+ RX Vega 56
    Monitor32" INSIGNIA 720p, 32" Samsung 1080p C32F391FWN, 32" ASUS 1440p VA32AQ
    Storage #1Seagate 150GB 7200RPM, Samsung 850 EVO 250GB 2.5" 6Gb/s Solid State Drive (X2)
    Storage #2Seagate 500GB 7200RPM, WD Blue 3TB - 5400 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch
    CPU CoolerDeepcool GAMMAXX 300, Deepcool Lucifer V2, Wraith Spire
    CaseAntec Sonata, Deepcool Dukase V1, Deepcool Dukase V3
    Power SupplyATX 650, EVGA SuperNOVA 850 P2 (X2)
    Keyboard Logitech K220, MSI Interceptor DS4200 (X2)
    Mouse Microsoft 1850, Microsoft 4500, Gamdias Erebos LE, MSI DS 100, Redragon M601 Centrophorus
    Headset/Speakers Logitech Z313, Logitech Z506 (X2)
    OS Windows 10 Home X64, Windows 10 Pro X64 (X2)
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    Hmmmmmm. Seems high considering it's on water.

    What are your idle temps? What is the ambient temperature in the room where the PC is? Your CPU cooling faulty in anyway? What are you monitoring temps with? Are you running Prime while playing games and doing all sorts of other tasks?????

    I have no experience with the 4790K but on air, with a Lucifer V2 my 6700K never reached temperatures that high in Prime95. 100C is the throttle temp for the 4790K if I'm not mistaken but you don't want your temps that high all the time.

    Use one of these to determine what you need in terms of PSU wattage:

    https://www.evga.com/power-meter/

    http://www.coolermaster.com/power-supply-calculator/

    https://outervision.com/power-supply-calculator

  4. #4
    ROG Enthusiast Array Bal's Avatar
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    Hello panzlock

    thank you very much for response!

    idle temps are 35-36°C. room temperature is about 20°C

    honestly have no idea about cpu cooler, i built the rig about 2 years ago myself and since then all i did was cleaning the dust off regularly. should maybe change the water and apply new thermal paste?

    monitoring the temps with core temp 1.9

    I was running prime while playing games and doing all sorts of other tasks

    100C is the throttle temp for the 4790K and it has seen 95°C only once however during max cpu usage it kept going between 75-80°C and 87-90°C so can't say it was very stable.

    so the question is, should i go back up to 4500MHz and see how it goes or do something else?
    Asus GTX 980 Strix OC III Intel Core I7-4790K 4GHz III Maximus VII Formula
    Corsair Vengeance Pro Rot 16GB (2x8GB) DDR3 2133 MHz III Rog Swift PG278Q




    True wisdom is in knowing you know nothing

  5. #5
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Maximus IX Code
    Processori7-7700k 5.2GHz Delidded
    Memory (part number)16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba OCZ VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyEVGA Supernova 1600w Titanium
    Keyboard Cyberpower Skorpion K2
    Mouse Razer Basilisk
    Headset Sennheiser HD6XX / Modmic 5
    OS Windows 10 Home 64 bit
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    Accessory #2 Koolance ERM-2K3U
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    Hi Bal

    Prime95 is a cpu torture test and with a game running on top of it I'm sure your cpu is crying for help.

    Try running just the Realbench benchmark and see what temps are, this will give you a more accurate temp to go off of.

    How are temps when just running the Realbench benchmark ?

    https://rog.asus.com/rog-pro/realbench-v2-leaderboard/

  6. #6
    ROG Enthusiast Array Bal's Avatar
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    Hey Natel152

    Thats what i wanted to hear bro. i', gonna boost it up and see in realbench gonna let you know
    Asus GTX 980 Strix OC III Intel Core I7-4790K 4GHz III Maximus VII Formula
    Corsair Vengeance Pro Rot 16GB (2x8GB) DDR3 2133 MHz III Rog Swift PG278Q




    True wisdom is in knowing you know nothing

  7. #7
    ROG Enthusiast Array Bal's Avatar
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    Hello there m8 Natel152

    did the benchmark test on realbench and got max 70C

    i guess im good with 4500@1250v
    Asus GTX 980 Strix OC III Intel Core I7-4790K 4GHz III Maximus VII Formula
    Corsair Vengeance Pro Rot 16GB (2x8GB) DDR3 2133 MHz III Rog Swift PG278Q




    True wisdom is in knowing you know nothing

  8. #8
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Maximus IX Code
    Processori7-7700k 5.2GHz Delidded
    Memory (part number)16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba OCZ VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyEVGA Supernova 1600w Titanium
    Keyboard Cyberpower Skorpion K2
    Mouse Razer Basilisk
    Headset Sennheiser HD6XX / Modmic 5
    OS Windows 10 Home 64 bit
    Accessory #1 Asus optical drive
    Accessory #2 Koolance ERM-2K3U
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    Yeah that looks much better, you can try for 4.6GHz if you like, temps say you can.

    To me what counts the most is gaming temps and for the 4790k gaming temps at 75c is the highest you want to see.

  9. #9
    ROG Guru: Yellow Belt Array Legolas PC Specs
    Legolas PC Specs
    MotherboardMaximus X Hero Wifi AC
    ProcessorIntel Core i7 8600k oc 5Ghz
    Memory (part number)Samsung DDR4 16GB
    Graphics Card #1ASUS NVIDIA GTX 1080
    MonitorASUS MS246
    Storage #1Samsung MZVPV256
    Storage #2Samsung MZVPV256
    CPU CoolerCorsair H110I v2
    Power SupplyPC 1200W Turbo-Cool 1200
    Keyboard ASUS SK2045

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    Hello Bal,

    It seems like your water cooling heat sink is out of thermal paste or dry up, so the temperature will shoot up quickly during load. You can also download latest Corsair software and set up to performance mode for the Corsair fans to cool down your cpu. I sometimes force it to run 100% fan speed.
    Sincerely,
    Legolas

  10. #10
    ROG Enthusiast Array Bal's Avatar
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    Hi Legolas

    thanks for answers guys

    well ive been gaming now and got concerns... temperatures are very good and in csgo i got about 260-290 fps and that is insane good. but ive been crashing in Dead by daylight, rocket leage is giving error on start up and in csgo i get lag spikes time to time, i have problems.... but why? my temps are so good! it didnt go over 70C
    Asus GTX 980 Strix OC III Intel Core I7-4790K 4GHz III Maximus VII Formula
    Corsair Vengeance Pro Rot 16GB (2x8GB) DDR3 2133 MHz III Rog Swift PG278Q




    True wisdom is in knowing you know nothing

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