The AMD Closed Loop System
Closed loop water cooling is not new, but it certainly is a pretty hot topic now. Some of the first units out there had some interesting issues (like internal corrosion clogging everything up), but once those teething problems were solved the closed loop systems turned out to be pretty effective and easy to install. Initially these units had the performance of a top end air cooler, but with a lot lower noise. The latest generation of liquid cooling systems (LCS) is now further improved and provides performance approaching that of larger, more complex cooling systems. These products will not replace exotic systems like phase change, but they provide a lot of cooling in a fairly decent sized package.
Clean lines and graphics give this box a striking look without being tacky.
Last year with the introduction of the AMD FX-8150, AMD decided to create a SKU which not only included the CPU, but also a fairly robust LCS. This unit is based on an Asetek design which features a double wide cooler/reservoir with the push-me/pull-ya fan combination. Other manufacturers offer this particular product under a variety of names, but this is simply an AMD FX branded unit with some small cosmetic changes to differentiate it from other units.
AMD will eventually offer this cooler with the new Vishera based FX-8350 CPU (or at least we assume they will), and we wanted to take this combination out for a spin. In our FX-8350 review we did not hit the overclocking targets that AMD had set. In most literature that we were provided AMD stated that most FX-8350 parts would be able to hit around 5 GHz with some aggressive cooling. In our review I was able to get to around 4.6 GHz max and around 4.5 GHz stable with better than average cooling. The results were not as impressive as we had hoped, but we again did not have a top end cooling solution such as what AMD provides with this particular LCS.
With a brand new LCS in hand, I retested the FX-8350 to see how hard it could be pushed. I also wanted to see how this particular unit performance in terms of thermal properties. The results were quite surprising for me, as this is my first real experience with a LCS.
Subject: Cases and Cooling, Processors | August 12, 2011 - 11:53 PM | Tim Verry
Tagged: amd, FX, octocore, water cooling, sealed loop, LCS, hsf
According to Xbit Labs, AMD is considering switching out the usual air cooler (HSF) for a sealed loop liquid cooling solution (LCS) for its high end FX Processors. Specifically, AMD wants to pair their highest end eight core processor (and possibly the next highest end eight core chip) with the sealed loop liquid cooling solution. This information, they believe, comes from a “source with knowledge of the company’s plans.”
If you are not familiar with the sealed loop water coolers, PC Perspective reviewed the Corsair H70 processor cooler last year and it is a good example. Sealed loop water coolers are similar to the large DIY water cooling loops comprised of a large radiator, copper CPU block, pump, and reservoir all connected in a loop by tubing; however, they usually have smaller radiators and pumps as well as coolant that cannot be refilled (and should not have to be). This coolant carries heat away from the processor to be dissipated through a radiator. Corsair in particular has heavily invested in this once very niche product with it’s H series of coolers.
Traditionally, both Intel and AMD have been content in pairing their chips with mid-range but cheap air coolers that did a decent job of keeping the processors within their thermal limits at stock speeds. Enthusiasts, and especially those interested in overclocking, have generally ditched the included cooler in favor of a more powerful and/or quieter aftermarket cooler. Needless to say, including a cooler, especially with high end chips that will likely go to enthusiasts, that’s never even used only serves to add additional unnecessary cost for both consumers and the manufacturer. Thus, this move to bundle a more powerful sealed loop water cooler with its high end chips may be an attempt by AMD to futher appeal to enthusiasts and keep with their traditional image of being friendly to overclockers and hardware enthusiasts. Having and using a water cooler that is supported by the chip maker certainly doesn’t hurt, especially if it ever came down to warranty and RMA situations. On the other hand, enthusiasts can be very picky about which cooler to use in their systems; therefore, bundling a cooler that is sure to add even more extra cost to the package may not be the right move for AMD. At best, consumers are likely to see an extra $50 or so added to the sure to be pricey highest end eight core chips.
Their idea, if true, surely has merit, but is it wise? Let us know your thoughts in the comments below!
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