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Continuing right, we run into four DRAM slots. The double-sided latching slots support up to 128GB of RAM at speeds listed to DDR4 5333 for a one DIMM per channel and single-rank kits. As always, your mileage may vary, as reaching those speeds depends on the memory you buy along with the quality of the CPUs’ integrated memory controller (IMC). We had no issues running DDR4 4000 MHz with our 16GB kit by simply enabling XMP.
The cooling also appears more substantial with two fairly large heatsinks and the board itself is noticeably heavier. Under the heatsinks though we find a pretty mediocre vcore VRM, composed of Alpha & Omega AOZ5316 50A power stages. In total, there are ten which have been teamed up in pairs for a 5-phase vcore. Of course, it's what's under the heatsinks that's the most important thing and here we find a massive 12-phase vcore VRM, with each phase driven by a Vishay SiC651A 50A powerstage. In total, there are 12 powerstages, so while not the most extreme vcore VRM we've seen so far, it's still mighty impressive for the price. Gigabyte Z590 Gaming X
Test Setup
Even the Asus Prime Z590-P wasn't particularly impressive hitting 78C, but at least the 11900K wasn't power limited here. Still, that almost 80C operating temperature looks quite bad next to the Gigabyte Z590 UD and MSI Z590-A Pro, both of which ran at around 60C, though they were running the 11900K 100 MHz slower. For a more apples to apples comparison, let's move on to the OC results.
However, it's the VRM that we're most interested in and here we find a significant upgrade. Asus is still using 50A powerstages but they're On Semi NCP302150's and there's 14 of them in total, configured in pairs for a 7-phase vcore. That's a significantly greater current capacity which should drastically improve VRM thermal performance for this model. MSI Z590-A Pro The Gaming X still uses a dozen Vishay powerstages in a 12-phase configuration, but we find 60A versions, so this board should be slightly better than the UD in terms of VRM thermal performance. Test Setup Before we get to the graphs, let's talk about the test conditions. For this testing and all future LGA1200 VRM thermal testing we've built a dedicated system inside the Corsair 5000D Airflow case. Powering it we have the Corsair RM850x PSU and the Corsair iCUE H150i Elite Capellix White keeping things cool.
For recording temperatures we're using a digital thermometer with K-Type thermocouples. We'll be reporting the peak rear PCB temperature. Finally, we're not reporting Delta T over Ambient, instead we maintain a room temperature of 21 degrees and to ensure a consistent ambient temperature, a thermocouple is positioned next to the test system. For stressing the system we're using the Blender Gooseberry workload which will run for an hour, at which point we'll be reporting the maximum PCB temperature, recorded using k-type thermocouples. The 5000D has been configured with a single rear 120mm exhaust fan and a single 120mm intake fan. On the top of the case is the H150i 360mm radiator with three 120mm exhaust fans. This is a standard configuration, air flow is good, and in a 21 degree room, we'd say this is an optimal setup. The VRM heatsinks have also been upgraded and are bigger which is a bit ironic given the powerstages have been upgraded, making them more efficient, which means they'll output less heat, but that's how these things seem to go.
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