NZXT
NZXT 12VHPWR Adapter Cable
Bottom line: The NZXT 12VHPWR Adapter Cable ($19.99 on Amazon as of 2026-10-21 04:22 UTC): Powers NVIDIA RTX 40 Series GPUs from an existing NZXT ATX 2.X PSU, no ATX 3.0 needed; main trade-off: compatibility guaranteed only with NZXT C-Series Gold ATX 2.X PSUs.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Powers NVIDIA RTX 40 Series GPUs from an existing NZXT ATX 2.X PSU, no ATX 3.0 needed
- ✓ Rated for 600W to a GPU's 12VHPWR port
- ✓ Compact cable replaces the bulky stock 40 Series adapter
- ✓ 12+4-pin (16-pin) to dual 8-pin PCIe wiring
Cons
- ✗ Compatibility guaranteed only with NZXT C-Series Gold ATX 2.X PSUs
- ✗ Dual 8-pin input, not a native ATX 3.0 12VHPWR run
- ✗ Listed for 40 Series only, no 30 or 50 Series claim
- ✗ No cable length or sleeving color options stated
Manufacturer description
The 12VHPWR Adapter Cable powers the latest NVIDIA® GeForce RTX™ 40 Series GPUs with existing PSUs. Its specialized connector provides optimal performance and improved eciency, replacing bulky included adapters.
SpecPicks Verdict
SpecPicks scored NZXT 12VHPWR Adapter Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. NZXT's power supplies & cables lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- 40 SERIES READY: Powers an NVIDIA 40 Series GPU with an existing NZXT ATX 2.X PSU—no ATX 3.0 required.
- 600W RATED: Delivers up to 600 watts of power to graphics cards with a 12VHPWR port.
- CONNECTORS: 12+4-pin (16-pin) 12VHPWR goes to the GPU, and dual 8-pin PCIe goes to the PSU.
- COMPACT CABLE: Replaces the bulky standard adapter that comes with NVIDIA 40 Series GPUs.
- NZXT COMPATIBILITY: Guaranteed for use with all NZXT C-Series Gold ATX 2.X PSUs (PA-xG1BB).
Full Specifications
| Brand | NZXT |
|---|---|
| Color | Black |
| 600W RATED | Delivers up to 600 watts of power to graphics cards with a 12VHPWR port. |
| CONNECTORS | 12+4-pin (16-pin) 12VHPWR goes to the GPU, and dual 8-pin PCIe goes to the PSU. |
| Unit Count | 1 Count |
| Model Number | PA-xG1BB |
| COMPACT CABLE | Replaces the bulky standard adapter that comes with NVIDIA 40 Series GPUs. |
| Connector Type | 12VHPWR, PCIe 8-pin |
| 40 SERIES READY | Powers an NVIDIA 40 Series GPU with an existing NZXT ATX 2.X PSU—no ATX 3.0 required. |
| Mfr Part Number | BB-CG1BB |
| Number of Items | 1 |
| Number of Ports | 2 |
| Power Plug Type | No Plug |
| Compatible Devices | NZXT C Series Gold ATX 2.X PSU, NVIDIA 40 Series GPU |
| NZXT COMPATIBILITY | Guaranteed for use with all NZXT C-Series Gold ATX 2.X PSUs (PA-xG1BB). |
| Warranty Description | 2 year manufacturer |
| Full listing title | NZXT 12VHPWR Adapter Cable - 12+4-Pin (16-Pin) 12HVPWR to Dual 8-Pin PCIe - Compatible with NVIDIA 40 Series Graphics Cards and Existing NZXT ATX 2.X PSUs (PA-xG1BB) - Rated for 600 Watts - Black |
Ready to buy?
NZXT 12VHPWR Adapter Cable - 12+4-Pin (16-Pin) 12HVPWR to Dual 8-Pin PCIe - Compatible with NVIDIA 40 Series Graphics Cards and Existing NZXT ATX 2.X PSUs (PA-xG1BB) - Rated for 600 Watts - Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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