NVIDIA GeForce GTX 1660 Ti power connector: what does it need?
The NVIDIA GeForce GTX 1660 Ti needs 1× PCIe 8-pin from the power supply. At about 120 W board power, here is what to know before you plug it in.
Recommendations are planning estimates, not electrical or purchasing advice. The hardware figures behind them are vendor-published; your exact board-partner model and build can still differ.
Power connector
1× PCIe 8-pin
Reference power input.
GPU board power
120 W
Vendor TGP/TBP — a conservative ceiling, not typical gaming draw.
PSU minimum (typical build)
450 W
Assumes a 125 W-class CPU + standard accessories.
PSU comfortable (typical build)
550 W
Standard headroom for spikes and future room.
Board-partner note
Reference specification lists a single 8-pin PCIe connector (partner-built only, no Founders Edition).
ATX 3.x advice
Any competent modern power supply with the right cable handles this card. ATX 3.x is optional at this power class.
Safety notes
- Never mix modular cables between different PSU brands or models. The PSU-side pinout is not standardized — a mismatched cable can destroy hardware.
- Do not exceed a cable's rated load with splitters or adapters, and replace any cable with damaged or discolored connectors.
- Before buying, confirm the connector layout and PSU guidance on the official pages of both your exact card model and your PSU — board partners change designs between variants.
Sizing a supply for a full build? See the NVIDIA GeForce GTX 1660 Ti PSU recommendation → or open the full PSU Calculator →
How to check this figure
NVIDIA publishes no dedicated product page for this card any more — per-card URLs 404 or redirect to a series landing page carrying no power figures — so the specification is cited from NVIDIA's own comparison table. Matched on Section 'Compare 16 Series Specs' > table > column header 'GeForce GTX 1660 Ti' (column 1 of 7). Row 'Graphics Card Power (W)' = 120. Row 'Minimum System Power (W) (3)' = 450.
Source: NVIDIA official specification; multi-agent web verification 2026-07-15. Last updated: 2026-07-20.
Frequently asked questions
What power connector does the NVIDIA GeForce GTX 1660 Ti use?
The NVIDIA GeForce GTX 1660 Ti uses 1× PCIe 8-pin. Always confirm the exact layout on your specific board-partner model.
Do I need an ATX 3.1 power supply for the NVIDIA GeForce GTX 1660 Ti?
Any competent modern PSU with the correct cable handles the NVIDIA GeForce GTX 1660 Ti. ATX 3.x is optional at this power class.
What size PSU pairs with the NVIDIA GeForce GTX 1660 Ti?
For a typical companion system we estimate a 450 W minimum and 550 W for comfort. Use the PSU Calculator for your exact CPU and parts.