GT Calculations

Introduction

Along your GT journey you'll eventually start setting up full processing setups. This might start as early as LV, if not even in steam. A key part of any GT setup is processing speed. This will dictate how many of each machine you need, how much power you will need to route to it, and most importantly, your output. While often times you can simply wing it on quantities and tier, there's times you're looking for a specific output, or simply want to know how much fuel your power gen will produce. When it comes to calculations around GT, there's a few simple equations that will come in handy. Most are easy enough to derive yourself through how overclocking works, but this section is dedicated to laying them out for you to use. Most of these equations will be written in the syntax of excel, as it's a useful tool for GT math. However this can be done with anything that can handle rounding and logs.

Important variables

When calculating any GT values, there's a few important variables you'll need to get.

RecipeTime, simple the time in ticks of the recipe. This should be calculated with ticks being a constant 20tps. If you wish to account for a lower tps, I'd recommend setting your tps to a variable, and using that instead.

RecipeVoltage, simply the voltage of a given recipe. This is used to calculate power used, as well as set tier for overclocking. Don't account amps in this, as amps don't set tier but rather power needed to run.

RecipeAmps, this is just the amps of a recipe. Things such as the thermal centrifuge using 2, or arc furnaces using 3.

Input quantity, simply anything you want to measure in some way. This is mostly for calculating needed inputs for chains of machines, however it can be for anything you just want to know the rate of input on. For fluids it's easiest to measure in L, and dusts in full dust quantities.

output quantity, same as input, except for outputs.

parallels, this can be defined by a value in the case of some PA calcs, but this will usually be something you'd want to define with an equation. Things like ++ machines have varying numbers here, as well as PAs having ~2 values for a spectrum of machine efficiency vs power efficiency. For simple calcs this is easiest input as a value.

speed bonus, this is simply a multiplier on machine speeds. Sometimes it'll vary, such as the case of the pyro coil bonuses, but can be found simply or calculated easily from coils/etc.

overclock factor, this is a value to use for how speeds change with overclocking. Easiest to set to 2 for most machines with 2/4 overclocking, and 4 for perfect OCs like the LCR. Sometimes this needs a dynamic calc for machines like the ebf with both 2/4 and 4/4 OCing, but can also be set as a value most of the time.

Then anything else you might need. This could be something such as the pipe tier of a chem plant, the heat of an ebf recipe, EU reduction of ++, or anything that doesn't fit into the above categories. Usually these will be machine specific.

Calculating recipe tiers

Finding the tier of a recipe is simple enough, however it's a little more complex when you try to use equations. We all know 1-32v is LV, 33-128 is MV, and so on, but putting this in a formula is a little more complex. The basic idea is to use something that equates to a base 4 log to calculate amounts of times that the voltage is 4x over 8v. Rounding this value up will give you the tier, for values 8v and above.

Roundup(log((RecipeVoltage/8), base 4)). This applies a tier value of 1 to anything 9-32, a value of 2 to anything between 33-128, and so on. The one fault here comes with how values of 8 and below behave. One option is to use a max value function, to keep the tier value always at 1 or above.

Max(Roundup(log(RunningVoltage/8, 4)), 1) will work as a tier defining function for any recipe. Remember not to not factor in amps here, as those don't define tier, just power consumed.

Calculating Recipe time with variables

The next important value to calculate will be the length of a recipe.