Shopping for pc power supplies & cables gets confusing when a complete SFX unit sits beside several purpose-specific PCIe cables. The useful payoff is simple: decide whether you need the power supply itself or a particular cable route before looking at price. A cable can address a named connection layout, but it is a different purchase from a complete power-supply unit.
Quick take
Begin with the hardware role, not the price tag. This group includes one complete SFX-format power supply and three PCIe cable choices with distinct jobs. The listed-price span is $60.04, reflecting that split as well as the different cable formats. Once you narrow the task to a complete unit, a direct conversion, a branch extension, or a Tesla-named route, the choice becomes much clearer.
Listed price comparison
| Listed item | Listed price | Relative listed-price bar |
|---|---|---|
| HUHOU GPU extension cable | USD 13.99 | |
| PCIe converter cable | USD 4.96 | |
| NVIDIA Tesla cable | USD 9.90 | |
| SilverStone SST-ST30SF power supply | USD 65.00 |
Decision matrix
- Complete SFX power supply: Choose the SilverStone SST-ST30SF when your shopping list calls for a complete SFX unit.
- Direct PCIe conversion: The PCIe converter cable is the focused choice for a single named conversion route.
- GPU cable that branches: Pick the HUHOU GPU extension cable when a split extension layout is the point of the purchase.
- Tesla-named cable route: The NVIDIA Tesla cable is the targeted option for the models named in its title.
Product notes
HUHOU GPU Extension Cable
For a cabling job where black-and-yellow styling and a two-pack are desirable, the HUHOU cable is the more tailored option. Its description identifies it as a graphics-card extender and Y splitter, giving it a clear role in GPU-focused cable routing. The trade-off is price: its listed amount is $9.03 above the direct PCIe converter. Choose it when the split-extension format is actually required, rather than simply because any PCIe cable is needed. It is a cable purchase for a particular routing arrangement, not a stand-in for a complete SFX power-supply unit.
6-pin to 8-pin PCI Express Power Converter Cable
This cable is the straightforward selection when the job is the specific PCIe conversion named in its title. At $4.96, it occupies the lowest listed price position in the comparison, and its 18 AWG wording gives it a defined cable-construction detail. Its limitation is intentional specificity: the stated endpoints are 6-pin PCIe and 8-pin PCIe. That makes it suited to that named connection route rather than a dual-output branch arrangement or a Tesla-focused cable. It also remains a cable item, not a replacement for a full power supply.
Dual PCIe 8Pin to CPU 8Pin Tesla Cable
The appeal here is specificity. The title directly names NVIDIA Tesla K80, P40, and P100 alongside a dual PCIe 8Pin to CPU 8Pin layout. That is a concrete reason to choose it over broader GPU-adapter labels when that exact model-focused use case is yours. Its limitation is equally narrow: the 12.5CM designation and Tesla-centered naming make it a targeted cable rather than a general selection for an unrelated connection route. The listing identifies the item type simply as a cable, keeping its role separate from a complete power-supply purchase.
SilverStone SST-ST30SF SFX Form Factor 300W 80Plus Bronze Power Supply
SilverStone is the relevant direction when the purchase calls for a complete unit rather than a connector cable. The stated 20-pin, 20+4-pin, 24-pin, and 8-pin 12V connectors, along with one fan, give it the clearest full-power-supply profile of the four choices. Its concrete limitation is condition: it is identified as open box. It also sits at the $65 end of the comparison, placing it in a different listed-price range from the three cable entries. Choose it for the power-supply role, not for solving an isolated PCIe cable route.
Final recommendation by use case
Choose the SilverStone SST-ST30SF SFX 300W PSU when you need a complete SFX-form-factor unit. For a direct connector conversion, select the PCIe converter cable. The HUHOU black-and-yellow two-pack extension cable fits a GPU branch-extension project, while the 12.5CM NVIDIA Tesla cable is the focused pick for the Tesla-named route.
