In our first test we observe the max. CPU/GPU temperatures of the system while allowing Unigine Heaven 4.0 to run on a 30-minute loop with default system fan profile. Idle temperatures were read 10 minutes later, indicating how well the system exhausted built up heat. To report back on the temperatures we used Ryzen Master readings and GPU-Z.



A maximum reported temperature of 89.8C is exceptionally high and a reflection of the stock cooler’s lacklustre performance. Bear in mind that the Ryzen 5 5500 is only a 65W TDP SKU and has a rated maximum operating temperature of 95C; pushing the system hard over extended periods in hotter conditions exceeding our 20C ambient temperatures could easily result in CPU throttling.



By the same token the system was able to regain an idle CPU temperature of 33C 10mins after load, indicating that general air-flow inside the case is adequate to its needs. This is backed up by fair GPU load temperatures hovering at or below 75C.



The Ultra 55 4T pushes a peak of 248W under gaming load, well within the rated specification of the supplied PSU, and falls to 45W at idle. That’s fairly efficient for a gaming PC if you’re the sort to leave a system powered up 24/7, and it won’t be a power guzzler if gaming is your primary use case.



A boot to Windows time of over 14 seconds won’t be setting any records, and reflects the somewhat laboured boot process common to AMD’s Ryzen platform.