The IceSleet G6 Stealth from IceBerg Thermal is a unique air cooler that features a radiator that wraps around the included fan. Today’s high-end CPUs emit more heat than ever before, so does the Iceberg Thermal IceSleet G6 Stealth have what it takes to cool Intel’s i9-13900K and enter the best CPU cooler list?
We’ll have to do some testing to say for sure, but it does have some impressive specs and stats. backs it up with a 10-year long warranty. The big question is whether the cooler stands out against much cheaper options.
A quick test will tell. But first, here are the specs for the cooler straight from Iceberg Thermal.
cooler specs
| cooler | Iceberg Thermal IceSleet G6 Stealth |
| Manufacturer’s suggested retail price | $79.99 USD |
| Radiator dimensions | 123×156×160mm |
| Radiator material | aluminum |
| heat pipe | 6×6mm |
| thermal compound | Fuse Ice Plus |
| weight | 1080 grams |
| Socket compatibility | Intel: LGA 1700, 1200, 2066, 115X, 2001-0 & 2011-3 (square ILM) |
| AMD: AM5, AM4, AM3(+), AM2(+), FM2(+), FM1 | |
| base | nickel plated copper |
| Maximum TDP (our test) | ~227W |
| guarantee | 10 years |
Packing and inclusions
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Iceberg Thermal’s IceSleet G6 Stealth is a unique package. The contents are two large and small cardboard boxes. The smaller box contains the unit’s accessories, and the larger box opens to reveal the CPU cooler.
Package includes:
- CPU heatsink
- 1x 140mm fan
- Mount for all modern CPU sockets (including AM5 and LGA1700)
- Quick start guide
- thermal paste
- small screwdriver
install
Installing the G6 Stealth on my Intel system was very easy. First, attach the mounting studs to the backplate and secure them with the provided O-rings. Then press the backplate onto the motherboard, slide in the standoffs, attach the mounting bar, and secure using the included screws.
After applying thermal paste to the CPU, press the heatsink onto the mounting bar and secure it with a long screwdriver (not included). The final step is to attach the fan to the top and secure it using the included screws and a small screwdriver.
Installation on AMD systems is slightly easier as it uses the default backplate.
Features of IceSleet G6 Stealth from Iceberg Thermal
Impressive 10 year warranty
Iceberg Thermal backs the IceSleet G6 Stealth with an impressive 10 year warranty. This is the longest warranty we’ve ever seen on a CPU cooler and shows IceBerg’s confidence in the quality of their products.
Nickel-plated copper CPU block
The IceSleet G6 Stealth’s CPU contact plate is made of copper and is nickel plated. The base is a bit smaller than what we’ve seen on other coolers, so it will be interesting to see how well it performs in testing.
All black, nickel plated
The entire cooler is plated with black nickel. This will help prevent corrosion and should keep it looking good for several years.
Unique wraparound radiator design
The IceSleet G6 Stealth offers a unique design where the radiator wraps around a single 140mm fan in the center of the unit. The tower has 6 groups of fins for a total of 57 fins. Each group is shaped differently than the group above or below it to improve overall cooling performance. The bottom set of fins are recessed for better RAM compatibility and support for sticks up to 56mm high.
1x 140mm fan
Coolers are more than just heatsinks and radiators. Bundled fans have an impact on both cooling and noise levels. The IceSleet G6 Stealth includes a single 140mm fan mounted in the center of the unit.
The fans have fluid dynamic bearings and are balanced on two sides to support long life. IceBerg claims this fan will give him over 150,000 hours of operation. Converting to more traditional terms, they claim fans should last an impressive 17.5 years.
The fan also supports a unique feature designed to reduce noise levels in low heat workloads called ‘Auto Stop/Start’. Unlike the Zero RPM feature found in many graphics cards and processors, this keeps the cooling fans off for truly silent cooling until the PWM signal ramps up to 21%.
| size | 140×140×25mm |
| fan rotation speed | 600 – 1400 RPM (with auto START/STOP) |
| air flow | Up to 85 CFM |
| air pressure | Up to 2.2mm H2O |
| Bearing type | Fluid dynamic bearing |
| lifespan | >150,000 hours |
| lighting | none |
test method
With previous generation CPUs for coolers, it was fairly easy to keep flagship processors under TJ max (the maximum temperature a CPU can sustain without throttling) under demanding workloads. However, this is not practically possible with current generation CPUs (especially 13900K) without extreme cooling (or enabling power capping).
Enthusiasts must learn to accept high temperatures as “normal” while running demanding workloads on Raptor Lake and Ryzen 7000 CPUs. The latest AMD and Intel CPUs are designed to run fairly hot without problems, up to 95 degrees Celsius for AMD Ryzen 7000 CPUs and up to 100 degrees Celsius for Intel’s Core i9-13900K. Similar behavior has been the norm in laptops for years due to cooling limitations in tight spaces.
Intel’s i9-13900K supports Adaptive Boost Technology (ABT). This allows the chip to dynamically boost to higher all-core frequencies based on available thermal headroom and electrical conditions. This allows multi-core loads to run up to 5.5 GHz if the required heat dissipation is available. This feature works in an aggressive hot-seeking manner. If the chip detects that it is operating below the 100C threshold, it will increase performance and power until it hits a safe 100C limit, keeping the clocks higher (and providing better performance). increase). performance) for the long term.
The increased cooling challenges with Raptor Lake meant that we had to change some of the ways we test coolers. Some coolers were able to pass the Cinebench R23 multi-core test with Intel’s 12th Gen i9-12900K when the power cap was lifted (although only the most powerful models were able to pass that test ).with most liquid coolers all The air cooler I tested “failed” that test because the CPU hit its TJ max in this scenario.
On Raptor Lake’s 13900K, not a single cooler was able to keep the CPU below TJ max in this test. Instead, look at the total benchmark scores and clock speeds maintained in the tests to compare performance.
Asus’ TUF Gaming Z690 Gaming Plus WIFI motherboard is used to test Intel’s i9-13900K CPU. Cooler Master’s HAF 700 Berserker Case fans are limited to 35% speed. The motherboard’s default fan curve is used for the CPU cooler fan.
In addition to testing Cinebench with no power cap applied, we also show the results of limiting the CPU power consumption to a more reasonable 200W. We also show the results at 125W for those who prefer whisper-quiet cooling at the expense of some performance. For both of these results, we show the traditional delta result versus ambient temperature.
We provide sound level measurements recorded using a PSPL25 sound meter for all three power levels tested to compare the noise produced by each cooler in different scenarios. We expect most coolers to run effectively and quietly at 125W.
LGA1700 socket bend
Keep in mind that besides the CPU cooler, there are many other factors that affect cooling performance, such as the case you use and the fans attached to the case. Your system’s motherboard can also affect this. Especially if the motherboard is bent, the cooler will have poor contact with the CPU.
To prevent bending from affecting the cooling results, Thermalright’s LGA 1700 contact frame was attached to the test rig. If the motherboard is subject to bending, the thermal results will be worse than those shown below. Not all motherboards are affected by this issue. I tested the Raptor Lake CPU on his two motherboards. One of them showed a significant thermal improvement after installing Thermalright’s LGA1700 contact frame, while the other motherboard showed no difference in temperature at all. For more information, check out this contact frame review.
test configuration
| CPU | Intel i9-13900K |
| Tested comparison air cooler | cougar forza 50 |
| Deep Cool AG400 | |
| Deep Cool AG620 | |
| SilverStone Hydrogon D120 ARGB | |
| Thermal Light Assassin X 120 R SE | |
| Thermal light AXP120-X67 | |
| Compare tested AIO coolers | Arctic Liquid Freezer II 360 |
| Deep Cool LT720 | |
| Fractal Celsius + S36 Prisma | |
| MSI MAG Core Liquid P360 | |
| SilverStone VIDA 240 Slim | |
| motherboard | Asus TUF Gaming Z690 Plus Wi-Fi DDR5 |
| RAM | Important DDR5-4800 |
| GPUs | Intel ARC A770 LE |
| case | Cooler Master HAF 700 Berserker |
| PSUs | Cooler Master XG Plus 850 Platinum PSU |
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