7700k kraken x62
7700k kraken x62
Hello and thank you for taking the time to read this message. I'm reaching out to the group because I genuinely need some guidance, and I don’t know anyone who has experience with overclocking. To be clear, here are the specifications:
- 7700k
- Kraken x62 equipped with x4 140mm AER-P fans in push-pull configuration
- Maximus IX formula Z270 with the latest BIOS update
- G.skill Trident Z 3600, 8GB RAM, XMP enabled
- Two Samsung 960 Pro RAID drives
- MSI Seahawk 1080 with Corsair ML Pro 120
- NZXT Noctis 450 case
- Two ML Pro 140 case fans
The Kraken radiator is positioned at the front using a push-pull design, the Seahawk radiator is mounted in the rear as an exhaust unit with ML Pro 120, and the two ML Pro 140 fans are placed on top for exhaust. The ambient temperature is around 19.5°C.
I’m seeking advice here. I’ve accepted that hitting the silicon limits isn’t possible—5.0GHz is out due to heat—but I’m wondering if there’s an issue with the chip or a faulty AIO. With a core frequency of 4.9GHz, a voltage of 1.300 and an LLC frequency of 5, I can run benchmarks like Cinebench, Realbench, Aida64 for 15 minutes using the top three components (CPU, FPU, and I don’t remember the third), XTU for 5 minutes under stress, Prime95 with a small FFT for 10 minutes, followed by another Cinebench and real bench run at a max temperature of 83°C (averaging around 76°C). No crashes or BSODs occurred, so I’m confident in stability. However, the peak temperature reached was only 83°C, which never consistently exceeded 80°C.
Before running a two to four-hour test in Cinebench, I performed OCCT Linpack 64-bit with all logical cores, AVX enabled. It failed immediately—within one to two minutes—without any warm-up period. After resetting it to 1.250 with a multiplier of 48 and BCLK of 100, the system crashed within minutes due to overheating.
I’m uncertain what to make of this. Given that I haven’t experienced failures with these settings until OCCT, would my configuration be considered unstable? Should I continue testing until I achieve stable performance in OCCT by adjusting voltage and multiplier, or should I dismiss OCCT altogether? I could potentially reach 4.6 or 4.7 in Cinebench without any issues.
Everyone’s stress test procedures differ, so I just need some input. If I follow OCCT as the standard, a 4.6 or 4.7 score would be disappointing, especially since my cooling setup uses a Kraken x62 and 7700k chips that typically handle at least 4.8.
Also worth noting: AVX offset of 3 or 4 produced similar results in OCCT. Today I also removed and replaced Artic Silver 5 using the pea method to eliminate any possibility of similar temperatures. Fan speeds are set to 100% for stress testing.
I believe kraken can maintain CPU temperatures at acceptable levels. The issue with the 7700 lies in the thermal paste between the die and IHS. Swapping it for a better product (deliding) can reduce CPU temps by at least 8 degrees Celsius. It’s quite simple, though you’ll lose the warranty and risk damaging the CPU if not done correctly.
For checking CPU overclock stability, I often run the custom stress test or use Prime95 overnight. This also evaluates the VRM performance. If everything works smoothly in the morning—still running without errors—just play.
Regarding various cooling solutions, I’m open to a tailored loop setup with quality parts (copper rails, reliable pumps, solid blocks). These tend to last longer and offer more adaptability. You can relocate them between builds.
It's a poor AIO that costs a lot more than expected. It looks good, but it feels like buying a Hyundai for the price of a BMW or Audi. The testing programs put extreme heat and power demands on the CPU. You should easily run your CPU at 1.35v and above with your MB and even with Krappen X62. For stable readings, refer to this guide: For consistency, I use blend mode of prime95 as well as a custom setup with min/max FFT=1344 for 20 minutes. Given how much you're investing, consider switching to real liquid cooling instead of relying on weak pumps and aluminum fins.
The system is quite disappointing as an AIO, especially given its high price. It looks good but offers little value compared to more expensive brands like BMW or Audi. The testing tools you're using apply extreme thermal and power demands on the CPU, which should be manageable even with your setup. For stability, refer to this guide: For better results, consider switching to real liquid cooling rather than relying on weak pumps and aluminum fins. Thank you for your prompt reply. Recently I ran Prime95 with a 26.6 small FFT, multiplier 49, and vcore 1.300. Within minutes I reached a max temperature of 83°C, staying around 80-81°C. After adjusting the settings, I got an average of 73°C in HWinfo with a peak of 78°C. The room temperature is about 18°C, so it’s quite cold in PA right now. I’d prefer to keep the cooling on unless the weather warms up and the AC runs. With ambient temps near 22°C when it gets warmer, I think it’s best to leave the cooling at its current setting. I also tested Prime95 with a single spike to 78°C, but most of the test stayed around 72°C. After about 20 minutes, no freezes or crashes occurred. In your opinion, are those temperatures safe for stability? Would you recommend another program for longer testing? What custom values should I use in Prime95? You also mentioned using a different liquid cooling setup—do you think the 7700K is overheating, or is it the cooler unit that’s too slow? I’ve heard better temperatures are possible with the Kraken and the 7700K.
I believe the Kraken can maintain CPU temperatures at acceptable levels. The issue with the 7700 lies in the thermal paste between the die and IHS. Swapping it for a better product, such as deliding, can reduce CPU temperatures by at least 8 degrees Celsius. It’s quite straightforward, though you’ll lose the warranty and risk damaging the CPU if not done correctly.
For testing CPU overclock stability, I typically run the custom stress test or use Prime95 overnight. This also evaluates the VRM performance. If everything checks out in the morning—still operational with no errors—then it’s safe to proceed.
Regarding various liquid cooling options, I’m open to a tailored loop using quality components like copper radiators and reliable pumps and blocks. These setups usually last longer and offer more flexibility. You can relocate them between builds, customize them, and adjust as needed. The loop I currently use has been over 10 years old but remains fully functional. I’ve grown tired of it and upgraded to more exciting components.
If you’re not interested in building one yourself, the Swiftech H220 X2 offers an AiO-style pre-assembled custom loop. You can install it immediately or modify it later if you’re ready.
Check out their options here: http://www.swiftech.com/aio.aspx
There was a more refined EK Predator, but they stopped production. EK had planned to release a replacement this spring, but there’s been no update yet.
P.S.
I recently traveled to Pittsburgh and Washington, PA for business a few years ago in the spring—it was quite chilly.
I believe Kraken can maintain CPU temperatures at a reasonable level. The issue with the 7700 lies in the thermal paste between the die and IHS. Swapping it with a better product (deliding) can reduce CPU temps by at least 8°C. It’s quite simple, but you lose the warranty and there’s a risk of damaging the CPU if done incorrectly.
For testing CPU overclock stability, I usually run the custom torture test or use Prime95 overnight. This also checks the VRM performance. If everything works fine in the morning (still running without errors), it’s safe to proceed.
Regarding different liquid cooling options, I’m open to a custom loop with quality components—copper radiators, reliable pumps, and solid blocks. These tend to last longer and offer more flexibility. You can relocate them between builds, tailor them, and adjust as needed. The loop I currently use is over 10 years old but still fully functional. I just grew tired of it and replaced it with better parts.
If you’re not interested in building yourself, the Swiftech H220 X2 is a good option. It’s an AiO-style pre-assembled custom loop. You can plug it in or expand/customize it later if you’re ready.
Check out their site for more sizes and models: http://www.swiftech.com/aio.aspx
There was a newer EK Predator, but they stopped producing it. EK had promised a replacement this spring, but there’s no update yet.
P.S.
I visited Pittsburgh and Washington PA a few years ago during a business trip—was a bit chilly. Thanks again for your quick reply. I should have known better before starting my build. I read many positive reviews about the Kraken, so I thought it was a solid choice. However, without experience in water cooling or overclocking, I wasn’t sure anything would change. The Noctis 450 wasn’t very beginner-friendly for assembly. I’m unsure if I could fit a custom water cooler there, so I might need a bigger case before trying it again.
As for now, I’ll stick with the 4.8 unless there’s instability or temperatures exceed 80°C in a hot environment. I don’t think I’ve hit the perfect setup, but that’s all I can do with what I have. I won’t risk a delid, so I’ll keep it as is for now. I plan to run a stability test with Prime95 and consider it a success if it passes. By the way, what values should I use for a custom torture test? Thanks again for your advice.
Min/Max equals 1344. The FFT was run in place and verified. It took about 20 minutes. Noiseless operation is confirmed. This setup can support up to 2x240 or 2x360 radians on top and front-mounted components, which helps reduce noise. I would choose this configuration for lower CPU noise. That setup allows compatibility with any overclocked high-end GPUs while keeping fans under 1300 RPM.
When examining my system, it’s only a small portion compared to yours. Therefore, you likely won’t need to replace the case. For the Swiftech AiO, it’s a solid starting point for custom loops—it doesn’t exceed the size of Kraken. You can integrate it at any stage, whether when upgrading GPUs or selling the current system. I’d install a full cover block on a new unit and link it to a Swiftech/EK setup. It offers better thermal performance and quieter operation than hybrid cards like Seahawk.
Concerning your overclocking plans, what’s holding you back is temperature management. It seems you could push it up to around +5GHz, though realistically it won’t be significantly faster than 4.7GHz. You don’t have to overclock right now to play games; even stock speeds will handle most titles. You can increase the frequency later if needed or when you feel more confident. Honestly, this CPU should last at least three years.
Notes:
Min/Max = 1344
Run FFT in place checked
20 minutes.
noctis 450 presents a significant challenge. It supports up to 2x240 or 2x360 radians at the top and front, which is ideal for reducing noise. This setup can accommodate any CPU paired with two high-end GPUs, all overclocked but running at low noise levels—fans under 1300 RPM.
When examining my own system, it’s only a small portion of yours.
Therefore, you likely won’t need to upgrade the case.
Concerning the Swiftech AIO, it’s a solid starting point for a custom loop; it doesn’t exceed the size of Kraken.
You have flexibility to add it later or as needed. I’d consider it when I find a purpose—such as selling the Kraken or upgrading my GPU next. I’d simply install a full cover block on a new unit and connect it to a Swiftech/EK setup. It offers better thermal performance and quieter operation compared to hybrid cards like Seahawk.
Regarding your overclocking goals, what’s holding you back is temperature. It seems potential for reaching around +5GHz, though realistically it won’t be significantly higher than 4.7GHz. You don’t have to push it right now to play games; even stock speeds should handle most titles. You can increase the frequency further once you’re more confident, or when a better need arises. Honestly, this CPU should last at least three years.
I think it’s built for 5GHz, but only if I manage the heat. I’m considering swapping the Kraken for a Swiftech unit just to test temperature improvements, so if I discover another use for the Kraken later, I might proceed.
For the custom loop, my experience suggests there might be issues that aren’t apparent to someone with your background. My main worry is fitting the reservoir in the case.
No matter what, if I can stabilize it at 4.8GHz, it would definitely be a win. This was my first build and initial overclocking attempt. Once I feel more comfortable, a custom loop with watercooling will be the next logical step.
Thank you once again for all the details—your insights have really helped ease my worries about this build and overclocking.
For a first timer, really good job.
Swiftech is a custom loop that someone assembled for you. It has a pump (DDC), rad, res, CPU block, fittings, tubing. you can replace/change any of them as well as add components like other rads/blocks. Kinda very good place to start with custom loop. I doubt there will be much temperature difference if at all. At least not with stock helix fans. The difference is much lower noise. And of course the customization.