LAB501

Overclocking study – Intel Core i7 4790K & Intel Pentium G3258 – air, water, phase-change, DICE & LN2

Well first of all, I know – we didn’t test all cooling methods. Indeed, we only tested the most convenient ones and the best performing ones. We didn’t talk about TEC (thermoelectric cooling using the Peltier effect) because it is a thing of the past and it cannot be used very successfully on today’s CPU’s. We didn’t test a cascade because there is no actual difference between a cascade and single stage units except the temperature and loads they can keep. And we didn’t test liquid helium because it is pointless when it comes to most CPU’s (aka the ones that have cold bug at one point). And yes, there are many more ways in which you can chill water but we chose to show you the one that gets the best results.

Other than that I think we pretty much covered the whole array of cooling methods from air to LN2 and you also got to see how Core i7 4790K and Pentium G3258 react and scale with different cooling solutions. As you can see, the frequency reached with both CPU’s are pretty similar if we talk about single-threaded applications or validations. When we talk about full stability using all available cores then things change drastically because Core i7 4790K is limited by the heat. The little Pentium G3258 doesn’t have this problem because it has only 2 cores to begin with and only 3MB of cache.

Note that our samples are random, not hand picked… this means that your experience at home can be completely different. As a side note I can say that the G3258 we have is an above average sample, while the 4790K is just mediocre at best. Anyway, the Pentium G3258 is very fun to play with judging by its excellent overclock potential and also the very friendly price tag of only 72$. Also, the Core i7 4790K comes at the same price with the 4770K but with better TIM and with a healthy 500MHz frequency boost, which is quite a lot for home users.

Well, we hope you enjoyed our test and you find the results useful. If you are a beginner, hopefully we managed to shed some light on the difference between cooling methods. If you are an expert, at lest you know what to expect from some random samples. In the end, this is also a thing of luck, because there are CPU’s out there that get past 7GHz and there are those ones that cannot get past 6GHz. Even so, if you want to give overclocking a shot and want to start using air or something a bit stronger, chances are you are going to see some nice numbers both from the Pentium and the Devil’s Canyon.

Outro

64 comments la: Overclocking study – Intel Core i7 4790K & Intel Pentium G3258 – air, water, phase-change, DICE & LN2

    1. 1 – At what frequency did the Pentium G3258 ran fully stable using extreme water cooling?
      5126MHz
      2 – What maximum frequency did we achieve on Intel Core i7 4790K using LN2?
      6346MHz

      Reply
    2. Salomiea Marius wrote on:

      1-5250MHz
      2-6346MHz

      Reply
    3. Augustin Carnu wrote on:

      5126 Mhz fully Stable on extreme WaterCooling
      6346.53 Mhz maximum freqeuncy on 4790K LN2.

      Reply
    4. Ionita Bogdan Constantin wrote on:

      1) 5126MHz fully stable
      2) 6346MHz LN2

      Reply
    5. Dulgheriu Alexandru wrote on:

      1 – 5126MHz
      2 – 6346MHz

      Reply
    6. Ungureanu Lucian wrote on:

      1- 5126MHz
      2- 6346MHz

      Reply
    7. Prisecaru Gabriel wrote on:

      1. 5352 MHz
      2. 6346 Mhz

      Reply
    8. Ovidiu Bonte wrote on:

      1 – At what frequency did the Pentium G3258 ran fully stable using extreme water cooling?

      Answer: 5126MHz !

      2 – What maximum frequency did we achieve on Intel Core i7 4790K using LN2?

      Answer: 6346 MHZ!

      Reply
    9. Zacchaeus Lim wrote on:

      Hi there my answers are
      1.5250.91 mhz on ewc for G3258
      2.6346.53mhz on ln2 CPU-Z validated

      Reply
    10. Raul wrote on:

      1 – At what frequency did the Pentium G3258 ran fully stable using extreme water cooling? Answer is : 5250MHz
      2 – What maximum frequency did we achieve on Intel Core i7 4790K using LN2? Answer is : 6346MHz

      Reply
    11. Halian wrote on:

      1) 5126 MHz
      2) 6346 MHz

      Reply
    12. Giancarlo Dalmedico wrote on:

      1 – At what frequency did the Pentium G3258 ran fully stable using extreme water cooling?
      A: 5126 MHz

      2 – What maximum frequency did we achieve on Intel Core i7 4790K using LN2?
      A: 6346 MHz

      Reply
    13. Aurelian Niculita wrote on:

      1. 5126 MHz.
      2. 6346 Mhz.

      Reply
    14. Georgiana D wrote on:

      1 – 5126MHz
      2 – 6346MHz

      Reply
    15. The contest has ended, we will announce the winner tomorrow

      Reply
    16. You had to go up to like 1.35V or higher to get your 4790k to almost 4.8ghz?
      I set my BCLK has high as it would go at stock (101.5), set voltage to 1.30 fixed, set multiplier to 50, knocked it down until it would boot (48), knocked it down to temperature within operating ranges (47), and then tweaked the voltage down until it stopped, then set it to Adaptive, with a max of just above where it stopped.

      result: 1.23V 4770.5MHz

      Then I bumped CPU Cache till it wouldn’t work anymore, at 45x.

      Max temp at 86 degrees. No matter what I set voltages to I can’t get it to operate at 48x without it constantly going into thermal throttle. Works fine at 47x.
      I can even get it to do 48x on one core, so long as I don’t start up GTA V.

      Reply

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