Reduce, reuse, recycle.
But... with hardware mitigations slowing down pre-Skylake hardware and new ARM chips (M1 for now, hopefully others in the future). It really feels like anything older than Kabylake feels un-competitive and not worth the power draw for this generation. For years we only got low single digit increases each generation from Intel. Then AMD, and later Apple, disrupted this.
With the IPC of the new M1s, I honestly wonder if it would use less energy for these server parts to be (barely) recycled and manufactured into M2s from Apple or whatever Qualcomm is brewing with those Apple CPU designers they hired.