Difference between these two EVGA GTX 260 cards?

[edm]

896-P3-1255-AR
896-P3-1255-A1

Both, according to newegg have identical specs. the only difference seems to be the R and the 1 at the end of the model number. Does anyone know if there is any actually differences in these two cards?

 

[Painman]

From looking at this, it appears the A1 has the Mirrors Edge coupon... the AR does not.

Coupon or no, I'd get the A1 for the free shipping

 

[TC91]

the AR says its 55nm while the A1 doesnt say so... or at least on those links in the OP

 

[StarBlast]

It does look like the only difference is the Mirror's Edge coupon with both having the 55nm chip. EVGA GTX 260