AMD Ryzen ThreadRipper Overclocking And Power Consumption
In addition to the overclocking related tools, Ryzen Master for Threadripper also has toggles for enabling or disabling the legacy compatibility mode we covered on the architecture page, and it also had a couple of presets for “Creator” or “Game” modes. Creator mode is the default profile, which leaves all cores enabled and the memory controllers configured for UMA mode, while game mode switches the memory configuration to NUMA mode.
overclocking endeavors, we dove into the BIOS on the Gigabyte motherboard we used for testing, and did a little tuning. With both the Ryzen Threadripper 1950X and 1920X, we set the memory voltage to 1.38v, increased the SoC voltage by .1v, the CPU core voltage to 1.475, and then ratcheted up the all-core multiplier until the system was no longer stable. In the end, we ended up hitting a stable 4.1GHz with both processors, which is right in-line with other Ryzen processors we've tested previously.
For cooling, we stuck with the triple-fan Thermaltake Floe Riing 360 while overclocking and didn’t encounter any thermal issues. Temperatures at idle remained in the 40’C range and jumped into the 80’s under load. At stock speeds, however, temperatures with a triple-fan, premium AIO-cooler at a non-issue. We rarely saw temperatures approach the 70’C range at default clocks and voltages.
Before wrapping things up, we'd also like to talk a bit about power consumption. Throughout all of our benchmarking and testing, we monitored how much power our Threadripper-based test system was consuming with a power meter to compare it to the other test systems we used for testing. Our goal was to give you an idea as to how much power each configuration used while idling at the Windows desktop and while under a heavy CPU workload. Keep in mind, this is total system power consumption being measured at the outlet with only the processor loaded and not the the individual power of the CPUs alone.
Power consumption was relatively high with Threadripper. Idle power was over 100W, which was significantly higher than any other platform. We approached AMD with these numbers and got confirmation that they were in-line. The reason for the relatively high idle power is two fold -- first, there are more cores to keep powered up versus the other processors and second, Threadripper's clocks never dropped below their base frequency. Under load, power consumption was also higher than the other platforms, but they are not completely out of line with the multi-threaded performance advantages Threadripper offers. And in comparison to AMD's previous-gen, flagship 8-core chip, Threadripper's peak power consumption is downright impressive. 8 Bulldozer cores actually consume more energy than 16 Zen cores.