To be sure I was only timing the pack load I started with the client already running and timed between the launch button click and the appearance of the Minecraft screen.
I checked my load time using DW20 pack version 1.1.1 and Infinity version 1.2.1
DW20 = 3 minutes 7 seconds
Infinity = 2 minutes 32 seconds
My system:
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CPU: AMD FX8350 @ 4Ghz 8-core (may have an effect since the client does call OS functions which support multiple cores)
RAM: 8GB 1666Mhz DDR3
HD: 1TB 10k RPM
GPU: NVidia 9600GTX 512MB dedicated GDDR3 ram
Windows 8.1 Pro, 64 bit
Java 1.8.0_25, 16 bit
Keep in mind that in addition to loading the pack the client is also having to authenticate your login and does so through a separate program that has to access the Mojang server(s) and be authenticated itself as opposed to automatically authenticating as when you log onto Mojang's launcher... You should also take into account your internet connection speed as well.
I'm on Comcast and my current local speed, according to Speedtest (
www.speedtest.net )
is 124.80Mb Download and 12.18 Upload