Transient Response
20% Load – 20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.004V | 11.944V | 0.49% | Pass |
| 5V | 5.030V | 4.954V | 1.51% | Pass |
| 3.3V | 3.310V | 3.196V | 3.46% | Pass |
| 5VSB | 5.142V | 5.093V | 0.95% | Pass |
50% Load -20ms
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 11.997V | 11.935V | 0.51% | Pass |
| 5V | 5.022V | 4.932V | 1.79% | Pass |
| 3.3V | 3.300V | 3.181V | 3.61% | Pass |
| 5VSB | 5.144V | 5.098V | 0.89% | Pass |
The transient response in everyday scenarios is good at 12V and 5V, average at 3.3V, and top at 5VSB.
Transient Response ATX v3.0 Tests
The PSU successfully passed all ATX v3.0 transient response tests.
Compared to the only other >1500W ATX v3.0 PSU available on the market, the TX-1600 has a higher 12V rail on all tests, although it registers higher deviation in three of the four test scenarios.
Turn-On Transient Response
There is a voltage drop in the “PSU Off to Full 12V” test which I don’t like. Typically, the slope should go up smoothly without any drops.
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Thanks, super useful stuff. Where did the XPG Fusion 1600 results come from? Have you tested that one as well?
From the Cybenetics database 🙂
Saw some conflicting information on the net, so I wanted to ask the expert. Are the 12vhpwr connectors on this PSU capable of outputting the full 600 watts? I know the 12vhpwr cable itself supports 600 watts (melting issues aside), but I saw some forums stating the PSU only outputs 450 from the connectors. For context, I have Gigabyte 4090 Gaming OC which has a power limit of 600 watts, so I want to make sure I pick a PSU that can feed it if I decide to tinker with overclocking. Thanks.
Yes they are. Also please note that according to my measurements, 450W vs 600W on an RTX 4090 doesn’t provide anything significant on performance perspective.
I found it in the US and ordered from Newegg today!
No I didn’t. I accidentally ordered the Platinum. Newegg only has the 1300 Titanium.
Now I for real found this available in the US on Amazon.
Hello, this might be a dumb question, but this PSU isn’t available as of now (14th June 2023), is it? I looked all over Seasonic’s website and all I can find is a ATX 2.5 TX-1600 PSU, which is not ATX 3.0 and therefore PCI Gen 5 ready.
Hi! Nope, it is not out yet. Seasonic told me after Computex would release it to the market.
There are reddit rumors that some guy contacted them and they informed him about an ATX 3.1 version coming sooner or later so maybe we will never see the ATX 3.0 en masse in the EU.
Excuse my ignorance but i can’t understand one point. How can transient response reach %200 load, when OPP or OCP set to %130?
It is for a very short period, passing under OPP’s and OCP’s radar.
Great review. Any information on when this will be available in Europe or US? Can’t seem find it on Seasonics site either.
No ideal when they will bring it to the EU, sorry. I guess after Computex.
I find it funny that every time it appears that analog PSU tech is dead Seasonic says “hold my beer.” I don’t remember which PSU review it was for on Tomshardware, but you said that to hit ATX 3.0 specs you figured Seasonic would need to go digital. They now have two ATX 3.0 PSUs that are still analog and are some of the best in their class.
They did pretty well yes. Seasonic’s engineers don’t stop to push the analog technology high. Basically I was saying digital not for ATX v3.0, but for totem-pole and efficiency because to achieve even higher than Titanium, you definitely need totem-pole and by that time only through digital you could control such a PFC converter.
Perhaps it would be useful to include a dummy result on each chart representing the next Cybenetics efficiency rating up from what Cybenetics rate the reviewed PSU at (and also the minimum spec for the actual rating of the PSU).
For example:
Average Efficiency
115V AC Input (Higher is better)
Silverstone DA1650-G: 89.27%
Corsair HX1500i: 89.52%
Thermaltake Toughpower GF3 1650W: 89.76%
> [Cybenetics Titanium PSU min. spec.]: 91%
be quiet! Dark Power Pro 12 1500W: 91.04%
Thermaltake Toughpower TF1 1550W: 91.05%
EVGA SuperNOVA 1600 T2: 91.35%
ASUS RoG Thor 1600W: 91.73%
XPG Fusion 1600W: 91.97%
Corsair AX1600i: 92.22%
Seasonic Prime TX-1600 (ATX 3.0): 92.27%
Wentai Aidan – T616: 92.71%
> [Hypothetical Cybenetics Diamond PSU]: => 93%
This is a good idea!!