Annealed Pyrolytic Graphite, your next exotic cooling solution

Subject: Cases and Cooling | March 20, 2013 - 04:02 PM |
Tagged: annealed pyrolytic graphite, cooling, exotic materials, thermal paste

Efficient cooling has always and will always be a limiter on the power of processors, especially as the processes used shrink and transistor density increases.  Over the years we have seen heatpipes become common and watercooling move into the mainstream with the advent of all-in-one coolers.  Thermal interface material has not changed much, even though we have heard of many developments nothing has been released to market.  Carbon black proved to be too long in development and might be replaced by nanotube forests though there is do it yourself thermal paste doped with diamonds that you can make right now.

From there we saw a project doping thermal paste with graphene, which could provide conductivity of up to 600 W/mK once it becomes available, hopefully in sheet form for easy installation.  Increasing the thermal conductivity of your TIM is a good thing, assuming that the heatsink absorbing the heat can keep up with the transfer which is what makes the news out of FrostyTech so interesting.  Researchers are sandwiching a material they call K-Core Annealed Pyrolytic Graphite in between layers of aluminium and other metals to create a heatsink with a thermal conductivity of up to 1092W/mK in certain situations.  It is not as simple as doping a heatsink with this new material though, it is only efficient at moving heat horizontally. Read on to find out more at FrostyTech.

FT_KCORE.png

"When the thermal conductivity of copper and aluminum heat spreaders just won't cut it, the future revolves around a material called Annealed Pyrolytic Graphite. Let's consider the numbers: where a solid aluminum heat spreader has a thermal conductivity of 126W/mK, the same heatspreader with an Annealed Pyrolytic Graphite core would see thermal conductivity on the order of 1092 W/mK. That's not a typo."

Here are some more Cases & Cooling reviews from around the web:

CASES & COOLING

Source: FrostyTech

Sony is trying to get into your machine again ... in a good way

Subject: General Tech | July 17, 2012 - 04:31 PM |
Tagged: sony, tim, thermal paste, thermal sheet

Say goodbye to messy thermal paste and the time you spent cleaning up the goop that ended up somewhere it shouldn't thanks to Sony's new thermal sheet.  In fact it looks like this new thermal interface material is so easy to use you could do it blindfolded!  The demonstrated performance is equal to that of traditional thermal paste, with Sony claiming a much longer effective lifespan.  At 0.3mm thick it will also provide a thinner layer of TIM than even the most practised of us cannot match by hand.  Check out more at Slashdot and try to avoid the rootkit jokes.

sony_thermal_sheet_01-580x344.jpg

"Sony has demonstrated a thermal sheet that it claims matches thermal paste in terms of cooling ability while beating it on life span. The key to the sheet is a combination of silicon and carbon fibers, to produce a thermal conductive layer that's between 0.3 and 2mm thick. In the demonstration, the same CPU was cooled by thermal paste and the thermal sheet side-by-side, with the paste keeping the processor at a steady 53 degrees Celsius. The sheet achieved a slightly better 50 degrees Celsius. The actual CPU used in the demonstration wasn't identified. Sony wants to get the thermal sheet used in servers and for projection units, but I can definitely see this being an option for typical PC builds, too. It's certainly going to be less messy and probably a lot cheaper than buying a tube of thermal paste."

Here is some more Tech News from around the web:

Tech Talk

Source: Slashdot