with all the other stuff we're spending cash on we don't actually have enough this quarter for them.
That's profit. The SA is paying you to develop the upgrades and will buy them as well, so the money listed there is the net profit. See Interstellar Expansion Part 2.
I can't because they don't tell us what it's made of. So I just used a real life approximation, like we do for almost everything in this quest.
Just as a note here I've been thinking with carbon based armors or titanium (edit: derp I meant tungsten). Silaris Armor is explicitly made using CNT and Diamond, so using Carbon allotropes is okay for a guesstimate. Obviously its hyper-compressed so its density and compressed attributes are unknown but graphine/graphite/etc should get us within an order of magnitude or so.
@Hoyr - Could you please clarify?
Sure, also for reference a 800m MAC is a 81 TW (162 TJ/2s) weapon (note this is the outdated Everest class), a Reaper main gun is ~.5-2 PJ per shot (possibly many shots per second). Canon dreadnaughts cannot survive a hit. A Reaper on the other hand can tank the fire of several cruisers (and possibly a dreadnaught) on its armor (ME1).
Petawatt lasers ~= dreadnaught+ weapon
Terawatt lasers ~= cruiser weapon
Gigawatt lasers ~= frigate weapon
But... It's the upper range of gigawatt lasers that is a frigate weapon. Hundreds of GW. Nicely matching my estimations of Frigate MAC firepower.

An entire three orders of magnitude is a big range.
The low GW range (around one) is something I can possibly see in much smaller mounts (vehicles/fighter) given Miniaturized Lasers. I have seen reasonable arguments for atmospheric GW lasers. I would very much recommend researching VWL first so you can chirp the laser and not waste most of the energy on the air for planetary use. Combine that with laser generation schemes, and splitters ME lensing/mirrors or other clever technology I can see very low GW GARDIAN systems (esp as I estimate them at ~200MW now)
I will also warn that thermal not-fun may also be an issue for small craft. I haven't done any math on that, but a a lazy guess it might be a thing. Especially on fighters.
Now for all of you happy about gamma ray death... I'll point out that ~10cm of lead should reduce gamma ray hurting power to next to nothing for weaker gamma rays and lead is only 20-30% better than water by mass. Other materials like Uranium, Iridum, Platinum, and Osmium may be good too. Air halves the power of 0.5 MeV gamma rays every ~62 meters. (0.511 MeV is the power of a positron-electron gamma ray, gamma rays start at 0.1 MeV). So it's not going to be an armor bypass weapon. ME, based on other tech (arc-throwers), seems to consider the combat threat of gamma rays mostly solved. On the other hand the armor/anti-radiation layer still has to absorb all that energy.
Reference:
http://www.snow.edu/larrys/LabPicts/hvl_chart.htm
There's more complexity with continuous beams, pulsing, etc. But something to keep in mind.
Hm. Apparently Enduring-grade planetary shields, according to
@Hoyr's pricing scheme, are 2.5*10^18 credits each. Yeah, that's... gonna take awhile, even with our crazy exponential growth curve.
Well duh you're covering a planet. They're big. I included them because well, why not? And because Yog. (Note that's for a earth sized planet, and doesn't include power)
Just a question... Do you think a weapon like a super-chargable mac would be possible?
Circular devices are dependent in part on the ability to keep the projectile in the track. F=(mv^2)/r. So lets say... a 10km radius and .9c and a mass of 20kg. 1.45 x 10^14 newtons. Now mass effect will reduce that, but its still a lot.
In theory something like that may be possible. Not sure about running it 24/7, that's a lot of wear and tear.
Ultimately I think that's a very late game idea. (On a side note Reaper weapons are the same as 1g at 99% or 99.9% c)
I would like to start thinking in the direction of concluding the vote in the not to distant future.