With the launch of the Ryzen 3000 series processors, we’ve noticed a distinct confusion among readers and viewers when it comes to the phrases “Precision Boost 2,” “XFR,” “Precision Boost Overdrive,” which is different from Precision Boost, and “AutoOC.” There is also a lot of confusion about what’s considered stock, what PBO even does or if it works at all, and how thermals impact frequency of Ryzen CPUs. Today, we’re demystifying these names and demonstrating the basic behaviors of each solution as tested on two motherboards.
Precision Boost Overdrive is a technology new to Ryzen desktop processors, having first been introduced in Threadripper chips; technically, Ryzen 3000 uses Precision Boost 2. PBO is explicitly different from Precision Boost and Precision Boost 2, which is where a lot of people get confused. “Precision Boost” is not an abbreviation for “Precision Boost Overdrive,” it’s actually a different thing: Precision Boost is like XFR, AMD’s Extended Frequency Range boosting table for boosting a limited number of cores when possible. XFR was introduced with the first Ryzen series CPUs. Precision Boost takes into account three numbers in deciding how many cores can boost and when, and those numbers are PPT, TDC, and EDC, as well as temperature and the chip’s max boost clock. Precision Boost is enabled on a stock CPU, Precision Boost Overdrive is not. What PBO does not ever do is boost the frequency beyond the advertised CPU clocks, which is a major point that people have confused. We’ll quote directly from AMD’s review documentation so that there is no room for confusion:
The Versa J24 TG RGB Edition is a budget case from Thermaltake. Our understanding is that the J22/J23/J24/J25 are basically the same chassis with the same number of fans and different front panels, but trying to remember Thermaltake case SKUs is a great way to go crazy. The sample sent to us for review is specifically the RGB edition and not the newer ARGB edition, which may or may not have been a mistake on Thermaltake’s part, but saving $10 over an extra vowel is a win in our book.
The case interior is just big enough to fit an ATX motherboard with little room to spare on any side, but there are adequate cutouts along the front edge to route all the cables. The case is about as small as it can be without entering Q500L territory, almost exactly the same dimensions as the Meshify C but slightly longer. Cable management room is understandably restricted. There is space under the PSU shroud, but users with one or more 3.5” drives will struggle to find a place for power cables. The HDD cage can be removed or shifted 2.5cm back towards the rear of the case, a welcome change from budget cases that usually rivet the HDD cage in place.
We saw the yet-unnamed ASUS ROG Strix Helios at Computex 2018, where it landed a spot on our Most Room For Improvement list alongside the other two cases ASUS showed. ASUS doesn’t make cases--the company’s been around for 30 years, so we won’t say it’s never happened, but it’s definitely a rare occurrence. They worked with In Win to create the concept shown off at Computex, but the ASUS x In Win branding has disappeared from the production version and it’s our understanding that In Win is not involved in manufacturing. The Helios has to stand up to extra scrutiny as part of ASUS’ first foray into the case market. The ROG line has a reputation for solid hardware despite the over-the-top gamer branding, so it has big shoes to fill.The case is packed with as many features as possible, necessary or otherwise. The most distinctive is the velcro strap laced over the top panel, ostensibly an “ergonomic and stylish” handle for carrying the system to LAN parties. It helps a little for hoisting the case up on to a table, but this is not the enclosure to bring to a LAN party, even for the rare person that attends more than one per decade. Most of the case’s surface is glass and it weighs 18kg empty. At least the straps and the rails that they’re looped through are massive overkill, tested up to 50kg according to ASUS, so the most likely point of failure is the person lugging it around. The strap is fastened with velcro and can easily be removed before it gets dusty and gross, and we’d recommend doing so, since the case looks perfectly normal without it.
When we first received our sample, the “multifunction cover” over the cutouts to the side of the motherboard was knocked sideways in a way that looked like serious damage, but it was just loose. There was also a mysterious loose screw wedged into it, which we later discovered was from the front panel. The cover slides backwards and forwards to allow room for E-ATX motherboards, and it contains a 2.5” drive mount and built-in GPU braces. The braces are of limited usefulness since they mostly support the edge of the GPU closest to the motherboard, which is already held up by the PCIe slot. The rails for the supports are unpainted to allow the supports to slide up and down and stand out harshly against the black interior. GPU sag is a problem, but one without an elegant solution. The cover functions normally otherwise but offers very little clearance for plugs on the edge of the motherboard, and connecting the SATA cable for our boot drive was difficult.
Cooler Master sent over its NR600 enclosure at the same time as the Q500L, but we judged it a little less time sensitive since there wasn’t any melting candy inside of it. The NR600 is a budget mesh-fronted mid tower moving in on the market segment that the RL06 used to occupy, back when it was around $70.
At first glance, the Cooler Master MasterBox NR600 bears a strong resemblance to the NZXT H500, mostly thanks to the partial glass panel that cuts off at the level of the PSU shroud, but also the flat, unadorned exterior. Cooler Master has gone increasingly minimalist with their branding, which is limited to a logo-shaped power button and an embossed hexagon on the side of the PSU shroud. We went so far as to put the NR600 side-by-side with the H500 for comparison, but their glass panels are in fact slightly different sizes.
The Cooler Master Q500L is an ATX retrofit of the micro-ATX Q300L, designed to fit full-sized ATX motherboards and components. All of this is done entirely within the footprint of the existing SFF case, which is the gimmick of Cooler Master’s Q series: multiple different cases, one (small) external size. That’s good, because Cooler Master decided to fill the entire thing with Reese’s Cups before they sent it to us, and if they’d done that with something from the Cosmos line we’d be in serious trouble. We have been well-fed, though, and we’ve learned that freezing them makes them much better. Seriously.
We’re definitely losing money on this review, and it’s not just because we had to hire an intern to eat the 18 pounds of Reese’s cups that Cooler Master included in the case. We tried hard to make the Q500L perform well in testing – we tried to force it, with Patrick spending a week longer working on this case testing than we typically spend. This is Cooler Master’s Q500L mini case for full ATX motherboards, re-using the Q300 tooling from a micro-ATX case design, but shifting the power supply around to accommodate ATX motherboards. It’s a unique approach to an enclosure and, at $60, we can overlook a lot of limitations in favor of affordability.
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