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ERrr.... useless without differentials of entire systems...... You have to compare identical systems except for one different part. Plus you need to find the power draw of a known component to reference.

Or.... you have a clamp ammeter, know the voltage, and able to isolate all the power lines.

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unfortanly i cant go with this just broken down in terms of intel/amd and nvidia/ati..... as differant fans,HDDs, optical drives, etc, etc. all draw differant amounts of power. and some of my rigs pull double duty as lan servers and are being accessed at random times during the day for whatever reason there for increasing power draw.... there are just way to many options to consider for this.