Choosing pc power supplies & cables starts with one important split: do you need a complete power supply, or are you solving a specific connector-routing problem? A cable cannot replace a PSU, while a full PSU is unnecessary if the rest of the system is already powered and only needs a particular connection layout. These four choices cover two complete modular units alongside a Tesla-focused cable and a GPU-to-GPU splitter extension.
Quick take
The ATX 1000W model is the complete-unit route for shoppers who want a full modular supply with cable-management emphasis. The EVGA SuperNOVA 450 GM is the other complete PSU, distinguished by its SFX form factor and a broader stated connector list. For cable-only needs, the Tesla cable is the narrowest, shortest listed option, while the HUHOU extension is specifically arranged from one GPU 8-pin female end to two 6+2-pin PCIe male ends.
The listed price range runs from USD 9.90 to USD 86.10, a USD 76.20 spread. That difference mainly reflects the divide between purpose-built cables and complete power supplies, rather than four interchangeable ways to power the same build.
Listed price comparison
| Choice | Listed price | Relative listed-price bar |
|---|---|---|
| Tesla 8Pin-to-CPU cable | USD 9.90 | |
| 1000W ATX modular PSU | USD 86.10 | |
| GPU dual-PCIe extension | USD 13.99 | |
| EVGA SuperNOVA 450 GM SFX PSU | USD 70.00 |
Decision matrix
- Need a complete ATX power supply: Pick the 1000W ATX model when a full modular supply, a single fan, and 20+4-pin plus 4+4 CPU connector callouts match the build plan.
- Need a complete SFX power supply: Choose the EVGA SuperNOVA 450 GM when SFX form factor is the central requirement and the listed 24-pin, CPU, PCIe, SATA, and peripheral connections are relevant.
- Need a cable named for Tesla K80, P40, or P100: The short dual-PCIe-8Pin-to-CPU-8Pin cable is the focused choice.
- Need one GPU connector to branch into two PCIe ends: The HUHOU cable is the applicable layout because it is described as a GPU-to-GPU splitter rather than a CPU cable.
Product notes
Dual PCIe 8Pin to CPU 8Pin Power Cable for NVIDIA TESLA K80 P40 P100
This is the most narrowly targeted choice in the group. Its title specifically names NVIDIA Tesla K80, P40, and P100 alongside a dual PCIe 8Pin-to-CPU 8Pin configuration, giving shoppers a concrete model reference and connector arrangement to work from. Choose it when that exact Tesla-oriented cable role is the issue you are trying to solve, rather than when shopping for a complete PSU. The limitation is equally clear: the title calls out 12.5CM, so cable length is a fixed consideration in the purchase decision. It is listed simply as a cable, keeping its role separate from the ATX and SFX power supplies here.
ATX 1000W Full Modular Power Supply, 80+ Bronze Dual CPU PC PUS with ARGB Fan
For a build that calls for a complete ATX unit, this model brings together a 1000W title rating, full modular construction, and an ARGB fan. The full modular design is especially relevant when cable management is a priority, since the product description specifically frames it around keeping a case organized. Its stated connector callouts include 20+4 Pin and 4+4 CPU, and it has one fan listed for cooling. The trade-off is its position at the top of this four-item price range at USD 86.10. It is an ATX-form-factor choice, so it serves a different form-factor direction from the EVGA SFX unit.
Graphics Card GPU VGA PCIe 8 Pin Female to Dual 8 Pin (6+2) Male Extension Cable
The HUHOU extension cable has a very particular job: one 8-pin PCIe female connector branches to two 6+2-pin PCIe male ends. That arrangement makes it the logical selection when the desired routing is explicitly GPU 8-pin input to dual PCIe outputs for a graphics card. The black-and-yellow cable is also listed with 8 Pin PCI Express at one end and 6+2 Pin PCI Express at the other. Its key limitation is not subtle: it is described as a GPU-to-GPU splitter and explicitly not a CPU 8-pin cable. Keep the decision anchored to that stated connector purpose rather than treating it as a general PSU cable.
EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply
The EVGA SuperNOVA 450 GM is the complete PSU to choose when SFX form factor is the defining requirement. It is fully modular and lists a useful mix of 24 Pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral connections, giving it a broader stated connection set than the two cable-only choices. ECO Mode with a DBB fan is also part of its description. The limiting specification is its 450W title rating, which should be treated as a neutral listed value rather than compared as inherently better or worse than the 1000W ATX model. Its listed price is USD 70.00.
Final recommendation by use case
Buy the Tesla cable when the K80, P40, or P100 wording and 12.5CM cable length align with the job. Choose the HUHOU extension only for the stated GPU-to-GPU dual 6+2-pin arrangement. For a complete ATX supply with a stated 1000W rating and modular cable-management focus, select the ATX unit. For an SFX-form-factor complete PSU with SATA and peripheral connectors in its listed set, the EVGA SuperNOVA 450 GM is the clearer match.
