Choosing among pc power supplies & cables gets confusing when a low-cost connector converter sits beside complete power supplies. The useful first split is simple: are you replacing the unit that powers the system, or solving a specific PCI Express connector transition? Once that is clear, form-factor wording, cable design, condition, and the wattage named in the title make the four choices much easier to separate.
Quick take
- Keep a complete power-supply purchase separate from a connector-conversion task; the two solve different problems.
- Match the form-factor and connector words directly to your build plan before using price as a tiebreaker.
- Listed prices span a $65.04 difference from the lowest to the highest item, so a direct cost comparison only makes sense between choices serving the same role.
Listed price comparison
| Item | Listed price | Relative listed price |
|---|---|---|
| Enermax MaxRevo 1350W | USD 64.89 | |
| EVGA SuperNOVA 450 GM | USD 70.00 | |
| Segotep 650W ATX | USD 52.99 | |
| 6-pin to 8-pin PCI Express converter cable | USD 4.96 |
Decision matrix
- New-condition power supply is essential: the EVGA SuperNOVA 450 GM is the new-condition choice in this group.
- Used condition is acceptable: the Enermax MaxRevo is explicitly marked used and includes cables in its title.
- An open-box route fits the plan: the Segotep 650W is marked open box.
- The goal is the lowest listed outlay for a separate part: the 6-pin to 8-pin PCI Express converter cable is the $4.96 selection.
Product notes
Enermax MaxRevo 1350W Modular PC Power Supply 80 PLUS Gold EMR1350EWT w/ Cables
Pick the Enermax when your build brief specifically calls for a 1350W ATX / EPS12V power supply and you want cables included. The MaxRevo 1350W model carries an 80 PLUS Gold designation, while its modular cable layout focuses the installed set on the connections your system uses. That makes it a direct match for shoppers working from a detailed component plan rather than a compact-case requirement. The key limitation is condition: the unit is marked used. If new condition is central to the purchase, that status should outweigh the appealing combination of wattage, modular design, and included cables.
EVGA SuperNOVA 450 GM 450W 80 Plus Gold SFX Fully Modular Power Supply. New
The EVGA SuperNOVA 450 GM is the focused choice when SFX form factor is written into the case or power-supply requirement. Its listed connectors include 24 Pin, 4+4 CPU, 6+2 Pin PCI Express, SATA, and 4 Pin Peripheral, giving shoppers several named connection types to line up with a parts list. Fully modular construction is also part of the listing, alongside the black finish. Its limitation is price: at USD 70.00, it is the highest-priced item here. The 450W wording is best treated as a neutral specification to match to your own stated requirement.
OPEN BOX 650W Power Supply 80 Plus Gold Non-Modular ATX Gaming PC Case PSU
The Segotep selection makes sense for a build plan that names an ATX, non-modular power supply. Its 650W title, 20+4 Pin connector listing, and 120mm fan provide clear labels for narrowing a replacement search without confusing it with the SFX EVGA or the separate PCI Express cable. It also carries an 80 Plus Gold efficiency label. The trade-off is the open-box condition, which is materially different from choosing the new EVGA model. Choose this route when those ATX and non-modular words fit your requirement; pass when fully modular cabling is already a fixed part of the plan.
6-pin to 8-pin PCI Express Power Converter Cable GPU Video Card PCIE PCI-E 18AWG
This cable is for a narrowly defined connector task, not for choosing a replacement power supply. Select it when you need a 6-pin to 8-pin PCI Express conversion for a GPU connection. The 18 AWG wording gives you a specific cable specification to align with an existing cable plan, and the USD 4.96 listed price keeps it in a distinctly different purchase category from the three complete units. Its limitation is scope: it is a converter cable rather than a PSU. It can address the named connector transition, but it does not take the place of selecting the system's power supply.
Final recommendation by use case
Choose the Enermax MaxRevo for a requirement centered on a 1350W modular ATX / EPS12V unit with cables included, provided used condition suits the plan. Choose the EVGA SuperNOVA 450 GM when the deciding requirement is an SFX fully modular power supply with its listed connector mix. The Segotep 650W fits an ATX build brief that explicitly accepts a non-modular, open-box unit. Reserve the 6-pin to 8-pin PCI Express Power Converter Cable for the specific GPU connector-conversion use case, rather than treating it as an alternative to a full PSU.
