I ordered 2 AthlonXP 2100s off googlegear.com . One was retail, other OEM. The retail was green like the pictures I've seen from reviews on the net. The OEM is standard "brownish" like all other AMD CPUs. Both have "2100" written on the core, in the same places(also both have "AGOIA" written in the same places), but they have diffrent numbers/letters after the 2100/AGOIA. Whats the deal here?