How to compare fme chips which output power are mW and dBm？

Hardware Questions and Recommendations
1

Some boards are as 200mW or 500mW,it's hard to find the fme chips' datasheets
Some boards are as bellow,it's easy to find the fme chips' datasheets

tx：32db
rx：> 15db
output power：22.5 dBm @–35db devm，HT80，mcs9，5 V
output power：23 dBm @–30db devm，HT40，MCS7，5 V

2

P(dbm) = 10 * log10(P(mW))
P(mW) = 10 ^ (P(dbm) / 10)

3

If one board was 500mW.Calculated about 27dBm

the other board was :
tx：32db
rx：> 15db
output power：22.5 dBm @–35db devm，HT80，mcs9，5 V
output power：23 dBm @–30db devm，HT40，MCS7，5 V

what should I use to compare with 27dBm?32 ,23 or the one at mcs0?

4

You can't compare dBm to db (32). The 22.5 dBm and 23 dBm values are for different channel widths (80MHz vs 40MHz).