I wonder as well.  I'm running dual Xeons with 24GB of ram and only hitting ~70Kh/s

Those figures all sound right.  I am running an i5-7500 and getting about 80 Kh/s.    Keep in mind, that i7 you are using is 5 years old, so you can't expect super high hashrates.  as for that xeon, how old is it?  Anyone getting 150 KH/s is using a server with multiple cores, as in a xeon with 16-24 threads.  So its not surprising that a 4 core i7 is half of that.  In case anyone is wondering the miner I use is here:  https://github.com/JayDDee/cpuminer-opt

I am running it on i7-3770, but the hashrate is too low.
Because, my Android works at ~10KH/s; where as my CPU works at ~50KH/s. Isn't it too low for a system with such configurations?
Does network speed play a crucial role in attaining higher KH/s?

Absolute noob here.

Intel i7 - 3770 (3.40GHz)
8GB DDR3 RAM.

Which xeons? There's large range of xeons with both low and high count of cores threads.
Can't remember the model of the xeons i've tested it on but was able to push that up to ~120-140kh/s (this was back in 2014, been a while now ) That system ran with 32 threas (16 cores).

how to run this under windows?

pom.m-hash it is (in this moment). Let me explain how to check. Go to: https://poolinfo.systms.org/
On top of the page look for "General summary of XMG". Important number is Last Block   1449742  (at this minute)

Then, look at the pool you are interested in and check for Network block 1449742 (now)

Number of blocks being the same you can mine on it.

Welcome team.
I'm mining Magi for about 2 years at couple of regular PC's, I got about 150 khash. And I'd like to say that I like Magi. I like it for that I can take the average PC, just start mining and get some solvent amount of coins a little faster than thousand years without extreme gaming card and asic farm. I'm not appreciate switching magi to PoS-only coin, and some sense tells me that I'm not the only person who think so.
I think that if developers switch Magi to PoS-only mode, most part of community will leave it, including me. But I'd like to keep my friendship with Magi.
My vote is 2 hands up to keep PoW. I believe that solution can be found.

Is any answer from bittrex?

No amigo not yet. I'am still waiting.