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Anyone who has had a high end Seasonic power supply in recent years will immediately recognise this box. Yes, it's a photographer's nightmare.
Seasonic bundle an installation guide, a $50 stream e-gift card, cable ties and a user handbook. For a limited time they also told us they are including a 60W GaN charger – for as long as stocks last. Our sample didn't ship with a UK plug adapter, but we are hoping UK retail units will.
The Seasonic cables are high quality braided design and they should appeal to a wide audience in regards to appearance. The unit is supplied with a C19 power cable.
We asked Seasonic about ATX 3.0 compliancy and they sent us the following information.
“As you are aware, our flagship PRIME series has topped out at 1300 W Platinum. Though this is a lot of power for most systems, for some users, more power and higher efficiency is better, therefore we are introducing our PRIME 1600 W model in 80 PLUS® Titanium rating.
The PRIME TX-1600 comes with all the great PRIME features and it is ATX 2.53 compliant. Since this unit’s development was near completion when the Intel ATX 3.0 and PCIe 5.0 standards were finalized, we in turn tested all our new TX and PX units against these new recommendations and found the following:
PRIME TX-1600 / PX-1600 conforms with ATX 3.0 and PCIe5.0 up till 1000 W
PRIME TX-1300 conforms with ATX3.0 and PCIe5.0 up till 850 W
Considering the added performance bonus of these high-power units, we included a PCIe 5.0 12VHPWR connector cable harness in the packaging box. This enables:
the TX-1600 and PX-1600 to support systems where the AIC (Add-In Card) is up to 450 W and
the TX-1300 to support systems where the AIC is up to 300 W.
the new units to support systems with PCIe 5.0 peripherals.
For added safety and reliability, the 12VHPWR connector itself is rated at 600 W.
As a side note, to our current understanding, the TDP for the RTX4090 and the RTX4080 will come in at under 450 W and the TDP for RTX4070 will be under 300 W.
SPECIFICATIONS AND SUMMARY
PCIe 5.0 Requirement
The maximum power requirement is defined as 3 x AIC rated power.
The connector included is rated for 600 W.
The PRIME TX-1600 and PX-1600 can support up to 450 W AIC.
The PRIME TX-1300 can support up to 300 W AIC.
ATX 3.0
The maximum power supply – Power Excursion, is defined as 200 % of rated power @ 100 µS. (180 % @ 1 mS and 160 % @ 10 mS)
The current version of the PRIME TX-1600 with the OPP limitations supports up to 135 % ~ 140 % (2160 W ~ 2240 W)
The PRIME TX-1600 and PX-1600 can meet Intel ATX 3.0 requirements under 1000 W load.
The PRIME TX-1300 can meet Intel ATX 3.0 requirements under 850 W load.
PCIe 5.0 and Nvidia RTX 4xxx
Based on current information we collected from the market:
The RTX 4090 may have a TDP of up to 450 W
The RTX 4080 may have a TDP of up to 420 W
The RTX 4070 may have a TDP of up to 300 W
This means that the peak power requirement for the PCIe 5.0 compliance will be 450 W x 3 = 1350 W.
It is possible that future Ti-based cards may have higher TDP, but currently we do not have any supporting information.”
So we can see from the information Seasonic sent us that the TX-1600 on review today can meet Intel ATX 3.0 requirements up to 1000W. We will be interested to analyse how much power the upcoming Nvidia RTX 4xxx series cards will draw – but until closer to Nvidia's launch, we are unable to confirm anything.
