Choosing among pc power supplies & cables gets difficult when several items mention PCIe connectors but serve completely different jobs. Three selections here are cables for specific power-connection layouts, while the Silver Stone SST-ST45SF is a complete SFX power supply. Start by deciding whether you need to adapt or extend an existing cable, route power for a named Tesla application, or replace the power supply itself. Then match the connector wording exactly.
Quick take
The listed prices span from USD 4.96 to USD 65, largely because this group mixes compact cables with a 450W power supply. The 6-pin to 8-pin PCI Express converter is the straightforward choice for a single stated conversion. HUHOU's cable is the one to look at for a GPU extension that splits to two 6+2-pin male ends. The NVIDIA Tesla cable is narrowly named for K80, P40, and P100 applications, while the Silver Stone unit is the only SFX power supply and is listed in used condition.
Listed price comparison
| Item | Listed price | Price position |
|---|---|---|
| HUHOU GPU extension cable | USD 13.99 | |
| 6-pin-to-8-pin PCIe converter | USD 4.96 | |
| Dual PCIe-to-CPU Tesla cable | USD 9.90 | |
| Silver Stone SST-ST45SF power supply | USD 65.00 |
Decision matrix
- You have a 6-pin PCI Express connection and need an 8-pin PCI Express connection: choose the 6-pin to 8-pin PCI Express Power Converter Cable. Its connector labels directly describe that conversion.
- You need one GPU 8-pin female connection to branch into two 6+2-pin PCI Express male ends: choose the Graphics Card GPU VGA PCIe extension cable from HUHOU.
- Your planned connection is specifically named around NVIDIA Tesla K80, P40, or P100 hardware: choose the Dual PCIe 8Pin to CPU 8Pin Power Cable.
- You are shopping for a complete compact-format power supply rather than a cable: choose the Silver Stone SST-ST45SF, which is identified as a 450W SFX 80 Plus Bronze power supply.
Product notes
HUHOU dual 8-pin GPU extension cable
This cable makes the most sense when the required layout is an 8-pin GPU female input leading to dual 8-pin (6+2) male PCIe ends. That is a more specialized arrangement than a simple one-to-one converter, and the black-and-yellow cable is listed as new. The product description also frames it as a GPU-to-GPU splitter extension for graphics-card power lines, giving it a clear role in a system with that exact connector plan. Its limitation is equally important: the description explicitly distinguishes it from a CPU 8-pin cable, so it is not the right pick for the Tesla-oriented CPU connection represented by the P3 cable.
6-pin to 8-pin PCI Express Power Converter Cable
For a narrowly defined 6-pin PCIe-to-8-pin PCIe task, this is the most direct and lowest-priced item in the comparison at USD 4.96. The title specifies 18AWG wiring, and the listed connectors identify a 6-pin PCI Express input with an 8-pin PCI Express output. It is a sensible choice when the purchase is limited to that single conversion rather than an entire power-supply replacement. The trade-off is its focused format: the title describes one 6-pin-to-8-pin conversion, not the HUHOU cable's dual 6+2-pin output arrangement or the Tesla-focused PCIe-to-CPU cable configuration.
Dual PCIe 8Pin to CPU 8Pin Power Cable for NVIDIA Tesla
The main reason to choose this cable is its specific naming: it is a dual PCIe 8-pin to CPU 8-pin power cable for NVIDIA Tesla K80, P40, and P100. That makes it the clearest match here when those model names and that connector direction are part of the planned build or repair. Its USD 9.90 listed price places it between the simple 6-pin converter and HUHOU's dual-output extension. The limitation is its narrow focus. The title calls out a 12.5CM cable and a particular Tesla-oriented application, rather than presenting it as a general-purpose graphics-card extension or a standalone SFX power supply.
Silver Stone SST-ST45SF 450W SFX 80 Plus Bronze Power Supply
Choose the Silver Stone SST-ST45SF when the job calls for a complete 450W SFX power supply, not an adapter or extension cable. Its title also includes the 80 Plus Bronze designation, making it the only selection in this group that addresses the power-supply unit itself. At USD 65, it sits well above the cable-only options, which reflects the difference in product type rather than a like-for-like cable comparison. The notable limitation is condition: it is listed as used, and the description says it may show scratches from prior use. That makes condition an active part of this purchase decision.
Final recommendation by use case
Pick the 6-pin to 8-pin PCI Express converter for the stated single-connector conversion and its USD 4.96 listed price. Choose the HUHOU cable when your setup calls for the named dual-output GPU extension format. The Tesla cable is the targeted choice for a K80, P40, or P100 connection scenario. Select the Silver Stone SST-ST45SF when you need a 450W SFX power supply and are comfortable choosing a used unit rather than a cable-only solution.
