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This is the most critical component. Since you likely won't have 6-pin or 8-pin power cables, look for "bus-powered" cards.
Brands like Dell and HP often use non-standard power pins. You cannot easily swap in a standard EVGA or Corsair PSU without specialized adapters. Turning Office PC into Gaming PC...
Most office PCs use proprietary power connectors and low-wattage units (180W–290W). This usually limits you to GPUs that draw power directly from the PCIe slot (75W or less). This is the most critical component
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