Investigation of thermal interface between the processor chip Ivy Bridge and  heat spreader shown that the heat conducting substance prevents the efficient cooling of CPU, limiting its potential for overclocking with air cooling. Â
The test system is assembled on base of the motherboard Gigabyte Z77X-UD3H, 4 GB RAM G.Skill DDR3-2133 9-10-9-28 and CPU Core i7-3770K, Â the cooling Scythe Katana 3. Â At a frequency of 4200 MHz and supply voltage 1.224 volts after 20 minutes of testing in Prime95 CPU temperature rose to 83 ° C (considered the hottest core):
To remove the heat spreader enthusiast took the usual blade. Â Der8auer noted that the thermal grease does not inspire confidence and looks dry, poor quality.
The new thermal interface is GELID Extreme, a heat spreader was fixed in place with adhesive on silicone. Â The procedure of drying took exactly one day.
After all the manipulations 20 minutes in Prime95 , the CPU warmed to 79 ° C, with the core of 0 is considerably colder than the rest:
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Replacing the thermal interface contributed to the overclocking potential of CPU cooling with liquid nitrogen. Â The CPu was able to pass the test wPrime 1024m at 114 from 391 ms at a frequency of 6385 MHz, while the previous CPU rested at 6293 MHz .
At the end Der8auer added that he does not recommend users to replace the thermal interface since it is risky, since winning 5-9 ° C is negligible in comparison with the cost of processor. Related Products :
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