While waiting for the new devices from Samsung, users may be guessing about the carriers that will market Galaxy S7 with Snapdragon 820 and the same device with Exynos 8890. It is estimated that Snapdragon 820 will be for CDMA carriers like Verizon, Sprint and US Cellular in the States, or China Mobile.
It has already been in the news that Galaxy S7 will be given model number SM-G930 whereas the S7 edge carries model number SM-G935 following the example of S6 carried model number SM-G920 and the S6 edge as SM-G925, now a more granular breakdown of the model numbers has appeared. In short the CDMA carriers that will be featured with Qualcomm's most popular processor while new Samsung LTE devices will have the Exynos 8890 chipset.
Galaxy S7 Snapdragon 820 Versions
Following models of new Samsung devices will have Snapdragon 820:
Verizon - SM-G930V and SM-G935V, Sprint - SM-G930P and SM-G935P, US Cellular - SM-G930R4 and SM-G935R4, China - SM-G9300 and SM-G9350 models.
Galaxy S7 Exynos 8890 Versions
International unlocked - SM-G930F and SM-G935F, T-Mobile - SM-G930T and SM-G935T, AT&T - SM-G930A and SM-G935A, Canada - SM-G930W8 and SM-G935W8, Korean versions - SM-G930 S/K/L and SM-G935 S/K/L, depending on the carrier.
Previously it was in the rumors that Samsung will produce equal number of devices using both chipsets; Snapdragon-laden and Exynos-powered Galaxy S7 handset. It is not so and the distribution given above seems more appropriate
In the case of CDMA standard, Samsung seems more inclined and determined to use Qualcomm chipset that is liked by the US carrier market and the patents in the USA. It is only an academic discussion whereas there is no comparison in merits. Both the chipsets, Snapdragon 820 and Exynos 8890, are well known for their best performance. Galaxy S7 will perform equally well whether equipped with Exynos 8890 or Snapdragon 820.