what is the difference ?

OEM will literally be a processor in a box, no extra fancy stuff, no heatsink, no fan, jsut the prcessor packaged in a box, retail is the full retail package if you went to a proper shop and bought it, you get amnuals, proper box, heatsink fan etc... usually some thermal paste etc... hance the higher price.

i can confirm that the processors linked to are absolutely identical, there is no physical difference in the chip itself, just the box and extras that you get with it.
 
according to the specs on newegg they both look identical except for BP or BW both say 3year manufacturere warranty and heat sink and fan.
 
what is the difference ?
Well the ADA3200DAA4BW (ie., ADA3200BPBOX) is an E6 and th ADA3200DAA4BP (i.e., ADA3200BWBOX) is an E3 ... the bottom line: virtually no difference.

so i would need the retail box for a first build ?
Only if you dont want to buy your own HSF :)
 
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