Following an initial look at thermal compound spread on AMD’s Threadripper 1950X, we immediately revisited an old, retired discussion: Thermal paste application methods and which one is “best” for a larger IHS. With most of the relatively small CPUs, like the desktop-grade Intel and AMD CPUs, it’s more or less been determined that there’s no real, appreciable difference in application methods. Sure – you might get one degree Centigrade here or there, but the vast majority of users will be just fine with the “blob” method. As long as there’s enough compound, it’ll spread fairly evenly across Intel i3/i5/i7 non-HEDT CPUs and across Ryzen or FX CPUs.

Threadripper feels different: It’s huge, with the top of the IHS measuring at 68x51mm, and significantly wider on one axis. Threadripper also has a unique arrangement of silicon, with four “dies” spread across the substrate. AMD has told us that only two of the dies are active and that it should be the same two on every Threadripper CPU, with the other two being branded “silicon substrate interposers.” Speaking with Der8auer, we believe there may be more to this story than what we’re told. Der8auer is investigating further and will be posting coverage on his own channel as he learns more.

Anyway, we’re interested in how different thermal compound spreading methods may benefit Threadripper specifically. Testing will focus on the “blob” method, X-pattern, parallel lines pattern, Asetek’s stock pattern, and AMD’s recommended five-point pattern. Threadripper’s die layout looks like this, for a visual aid:

amd threadripper grid

Because of the spacing centrally, we are most concerned about covering the two clusters of dies, not the center of the IHS; that said, it’s still a good idea to cover the center as that is where the cooler’s copper density is located and most efficient.

Our video version of this content uses a sheet of Plexiglass to illustrate how compound spreads as it is applied. As we state later in the video, this is a nice, easy mode of visualization, but not really an accurate way to show how the compound spreads when under the real mounting force of a socketed cooler. For that, we later applied the same NZXT Kraken X62 cooler with each method, then took photos to show before/after cooler installation. Thermal testing was also performed. Seeing as AMD has permitted several other outlets to post their thermal results already, we figured we'd add ours to the growing pool of testing.

Modern humans used to hang undesirables in the town square and light “witches” aflame. For lack of a witch, PC hardware enthusiasts prefer to seek out companies that other internet users have suggested as wrongdoers. Legitimate or not, the requirement to stop and think about something need not apply here – we need more rage for the combustion engine; this thing doesn’t run on neutrality.

Posting a concern about a product, like Reddit user Kendalf did, cannot be praised enough. This type of alert gets attention from manufacturers and media alike, and means that we can all work together to determine if, (1) there is actually an issue, and (2) how we can fix it or work around it. The result is stronger products, hopefully. As stated in the lengthy conclusion below, though, it’s an unfortunate side effect that other commenters then elect to blow things out of proportion for need to feel upset about something. There’s always room for a one-off defect, for misunderstandings of features, or just a bad batch. There’s also room for a manufacturer to really screw up, so it just depends on the situation. Ideally, the mobs remain at bay until numerous people have actually verified something.


Continuing our Coverage of Computex 2017, we met with the Be Quiet! team at their booth to discuss some of their new and upcoming products. We took a look at their Silent Loop CLC CPU cooler, the new SFX-L PSU, the Shadow Rock TF2 air cooler, and the limited edition Dark Base Pro 900 - White Edition case.

The Dark Base Pro 900 was a case we covered last year at Computex, if it feels familiar. This year, Be Quiet! displayed their new iteration of the Dark Base Pro 900 - now in white. The White Edition uses the exact same tooling as the Dark Base Pro 900, with changes entirely cosmetic. Be Quiet! reps noted that the color-matching process was the most time consuming, and that the run will be limited at first to gauge market reception. The first all white case from Be Quiet! will be limited to 2000 units worldwide, with a specific number being given to each enclosure (a nameplate in the top-right corner, near the drive cages). The White Edition will ship with an included three 140mm Silent wings 3 fans in black, contrasting the white (we’re not sure if we like that just yet), and hosts all the usual features of the DBP900. The chassis is capable of hosting three 140mm fans at the front, another three 140mm fans on top, a single 140mm at the rear for exhaust, and another single 140mm fan at the bottom, near the PSU; that brings it up to eight possible fans in total.

When we made our “how air coolers work” video, a lot of viewers were interested in the inner workings of copper heatpipes and their various means of facilitating capillary action. Today, we’re revisiting our TLDR series with a video on how closed-loop liquid coolers work. We’ll be talking about permeation, air pockets, stators, impellers, coldplates, and chemical composition of the coolant.

This content has custom-made animations that we rendered specifically for explanation of how CLCs work. GN’s Andrew Coleman modeled and animated a closed-loop cooler for the piece, referencing NZXT’s Kraken X52. Because of the level of detail and custom animations of this content, NZXT sponsored GN to put this piece together. The content applies to all liquid coolers, but particularly focuses on closed-loop products; all concepts herein can be applied to CLCs across the industry from various suppliers and manufacturers. Our technical deep-dive for today serves as a means to fully detail liquid cooling and how it works, drilling down to piano-wire granularity (literally).

MSI’s new-ish GS43 Phantom Pro laptop made an appearance at PAX East this weekend, where we’re presently RNG-ing some tear-downs and live benchmark demonstrations. Our first content piece discussed keyboard input latency testing, and our second piece – this one – will open up the Phantom Pro for a closer look.

As a quick side note, MSI does have “new” camo finish GTX 1060s, Z270 motherboards, and GE62 laptops. We show those briefly in the video, though it’s really not a focal point for today.

Building-up a semi-custom liquid cooling loop is a bit of a new trend, spawned from a surge in AIO dominance over the market. The ease of installation for AIOs greatly exceeds what’s possible with an open loop, with the obvious loss of some customization and uniqueness. The cooling loss, although present, isn’t necessarily a big factor for the types of buyers interested in AIO CLCs rather than open-loop alternatives. Ever since we saw PNY’s solution years ago, though, and then more recently EVGA’s quick disconnect solution, the market has begun to burgeon with semi-custom loop “CLCs.”

An example of these semi-custom CLCs would be the EK Waterblocks Predator XLC 280 that we benchmarked in our Kraken X62 review. Today’s review also focuses on one of these semi-custom liquid cooling solutions, featuring benchmarks of the Alphacool Eiswolf GPX Pro on a GTX 1080. Our testing looks into thermal performance under baseline conditions (versus a GN Hybrid DIY option), frequency stability and performance, overclocking, and FPS impact. We’ve got a few noise and CPU tests too, though this will primarily focus on the GPU aspect of the cooling. The Alphacool Eiswolf GPX Pro does not work as an out-of-box product, necessitating our purchase of the Alphacool Eisbaer to hook into the system (CPU cooler + radiator). The Eiswolf GPX Pro is a $130 unit, and the Eisbaer cost us ~$145.

This unit was provided by viewer and reader ‘Eric’ on loan for review. Thanks, Eric!

Last week, Gigabyte announced the Gigabyte XTC700 tower CPU cooler to go along with their “Xtreme Gaming” peripherals, which include a slew of new products that mostly feature RGB LEDs. The XTC700 comes with an RGB top plate featuring the Gigabyte Xtreme Gaming logo, a pair of 120mm fans for push/pull, and Gigabyte branding for a unified aesthetic with Gigabyte motherboards and video cards. The RGB top plate, like all RGB Xtreme Gaming products, will be controllable through Gigabyte’s Spectrum software. The Gigabyte XTC700 will support Intel sockets 2011, 1366, 1156, 1155,1151,1150, 775, including the upcoming Kaby Lake. Additionally, the cooler will support AMD’s FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, 939, and 754 sockets -- basically everything from each vendor.

This week's news recap segment features updates from the Super Computing conference 2016, including updates to AMD's GPUOpen and Boltzmann initiatives (ROCm, HIP), an Intel Xeon refresh, and Intel's investment in self-driving cars. Outside of SC16, we also have news pertaining to Lian-Li's (finally) shipping PC-O10 case and Thermalright's AXP-100H Muscle cooler.

The only rumor in this news segment is that of AMD's Summit Ridge naming scheme, which Chip Hell suggested will be branded with numerical 3-5-7 suffixes, similar to Intel's CPU branding. Beyond an allegedly leaked slide, there's no way to validate this rumor -- so take it for what it's worth. It's likely that we'll find out more about Zen at the time of CES, or shortly thereafter. That tends to be when Intel and AMD make some CPU / architecture announcements.

Video below:

Liquid cooling has become infinitely more accessible with plug-and-play AIO solutions, but those lack some of the efficacy and all of the aesthetics. Open loop liquid cooling is alive and well in the enthusiast market; it's a niche of a niche, and one that's satisfied by few manufacturers. We had a chance to stop over at Thermaltake's offices while making the City of Industry circuit last week, and used some of that time to film a brief tutorial on hard tube bending.

It felt like filming a cooking show, at times. The format was similar, but it worked well for this process. Open loop liquid cooling is done with either soft tubing or hard tubing, the latter of which must be heated (with a heat gun) to make necessary bends within the system. Soft tubing is more easily manipulated and is as “plug and play” as it gets with an open loop, though “plug and play” isn't really desirable with open loops. Once you're this deep in cooling, best to go all the way.

PETG hard tubing is more leak resistant by nature of the mounting. Hard tubes are less likely to slip off of their mounting barbs with age or transport (fluid between the tube and its mounting point can lubricate the tube, causing a slip and slow leakage). The downside, as with the rest of open loop cooling, is entirely the time requirement and cost increase. Granted, compared to the rest of the loop, hard tubing cost can start to feel negligible.

We might soon be building a wet bench for open loop liquid cooling, as we're starting to receive GPUs with water blocks for testing. Today, we've got a brief hard tube bending tutorial with Thermaltake's Thermal Mike to lead us into our future open loop content. Take a look at that below:

This week's news announcements include AMD AM4 Zen chipset naming (rumors, technically), NZXT's new RGB LED 'Aer' fans, and a pair of cases from Rosewill and Cooler Master.

AMD's initial AM4 chipset announcement was made at PAX, where the B350, A320, and XBA300 chipsets were announced for mainstream and low-end Gen 7 APUs. The high-end Zen chipset for Summit Ridge was concealed during this announcement, but is now known to be the X370 platform.

X370 will ship alongside the Summit Ridge CPUs and will add to the lanes available for high-speed IO devices, mostly SATA and new generation USB. Most of the IO with the Zen architecture will be piped through the CPU itself, with what remains of the chipset acting more as an IO controller than a full chipset.

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