That will not do them justice, and might not like the 4Ω impedance of the speakers. If you want to use them only with your computer, then I'd recommend at the very minimum an integrated amp or receiver capable of dealing with a 4Ω load, with at least 100 watts/channel RMS. I'd also recommend a separate USB DAC for the computer, as most built-in audio is sub-par. Something like
this would be fine, although there are plenty of other higher end models. For the amp or receiver you can buy either new or used/vintage, but many lower priced newer amps don't deal well with 4Ω.
Is it possible that you'd want to add other signal sources in the future? Maybe a CD player, turntable, Bluetooth, or external streaming device?