The most noticeable feature of our temperature charts is the narrow range of approximately 12° between highest and lowest CPU core temperatures. Dismantled Core i7-4770s suggest that this is due to the interface material Intel uses. At best, this shows that huge improvements in cooling technology are needed to create relatively small drops in temperature.
The results are also the average of all four highest temperatures, and some cores run hotter than others.
Scythe’s Ashura is the hottest cooler to stay under the processor’s 100° limit at a room temperature of 23°. Zalman’s CNPS10X Optima failed the test at just over 21° room temperature, and hours of extra A/C were required to get the room cold enough to finish Argon AR01 and Night Hawk Frostbourne measurements.
We might have blamed Xigmatek’s white paint for the cooler’s inability to cope with a Haswell-based CPU at a mere 1.25 V, if not for the audible cues to fan speed. The slower speed likely corresponds to less airflow, though fin design is also a potential factor.
- Picking The Right Cooler For Haswell
- The Equalizer: Our Core i7-4770K Review Sample
- Gamer Storm Assassin
- Assassin Installation
- Noctua NH-U14S
- NH-U14S Installation
- Phanteks PH-TC14PE
- PH-TC14PE Installation
- Prolimatech Genesis Black
- Genesis Black Installation
- Scythe Ashura SCASR-1000
- Ashura Installation
- SilverStone Argon AR01
- Argon AR01 Installation
- Thermalright Archon SB-E X2
- Archon SB-E X2 Installation
- Xigmatek Dark Knight-Series Night Hawk Frostbourne Edition
- Night Hawk Installation
- Zalman CNPS10X Optima
- CNPS10X Optima Installation
- Test Settings And Benchmarks
- Results: Cooling And Fan Speed
- Noise And Acoustic Efficiency
- Cooling Value
- Which Heat Sink Best Contends With Haswell's Heat Problems?