Which PSU to buy?
Which PSU to buy?
It looks like your PSU failed, and you're looking for guidance on choosing the right one. You mentioned needing a Molex connection and the original 12V pin, not the newer 12VHPWR ATX model. You're considering either the latest 12V HPWR models or modular options. Your current setup includes an AMD Ryzen 5 2600, an RTX 2070, 2x8GB DDR4 RAM, a MSI B450 A-Pro motherboard, and various storage devices. You're planning a PC upgrade in about 1-2 years and want something reliable for the future.
The better choices are Seasonic Focus or PRIME series. Corsair RMe/RMi/RMx/HX/HXi/AX/Axi options also work well.
For upcoming RTX 40-series or 50-series, an ATX 3.0 PSU is recommended.
Selecting a model with ATX 3.0 PSUs offers a compact design, but solid picks include Seasonic Vertex GX/PX, PRIME PX (1300W), PRIME TX (1300W and 1600W) and Corsair RMe 2023.
The required power depends on the GPU you intend to upgrade to.
With an RTX 4090, use a 1600W PSU.
For RTX 4080, opt for a 1000W PSU.
RTX 4070 Ti pairs nicely with a 750W unit.
RTX 4060 can function with a 650W unit as well. Your existing configuration would also suffice.
Your concern is valid. Using a non-ATX 3.0 PSU with a 40-series model may affect performance, so it's worth checking compatibility before deciding.
Performance-wise - No.
For convenience - Possibly.
Using a non-ATX 3.0 PSU requires an adapter with PCI-E 8-pin to PCI-E 16-pin (+12VHPWR) to work properly with RTX 40-series GPUs.