Since the last update (v1.1.2) gregtech machines finally accept upgrades like overclockers and transformers.
Is there any way to remove upgrades again?

I think i just wasted two industrial centrifuges by adding 4 overclocker upgrades and only a MV transformer upgrade. With 4 overclockers it would need 1280 EU/t but it seems i can't add HV transfomer upgrades when there are MV ones already installed.

Starting to dislike gregtech here... Why doesn't it use upgrade slots so you could just remove them again?

nope you need to add 2 transformer upgrades and "ONLY" 2 overclockers. that's HV current and speed.

I agree with the annoyance of not being able to remove them..

With 2 overclockers the centrifuge only needs 5*4*4 = 80 eu/t so it already works with only 1 transformer upgrade / MV.
But it really does accept HV by just adding 2 transformer upgrades - awesome!
So my 4overclocker centrifuge works now! thx draze

hmmm i wonder if they've updated the mod. 4 overclockers with HV current was killing our centrifuge "power not met" or something. i'll try again later.

the centrifuge still needs 1280 EU/tick to work. Just make sure to deliver that via 512 EU/packet only (HV). Perfectly safe to combine several HV power inputs to the same cable. EU/packet is the actual voltage, EU/tick the flowing current.

Will the machine accept multiple packets per tick? I was under the impression that most machines only accepted 1 packet per tick and needed a storage device or transformer in order to take power from multiple generators.

Not sure if this is true for all machines but the gregtech ones do accept more than one packet per tick.
I use one fully overclocked industrial centrifuge (needing 1280 EU/t) feeded via one diamond fibre cable from 3 mfsu (outputting 512EU/p each)

Most machines can take multiple packets per tick the best example of this was the tekkit classic Mass Fabricator. on FTB the Matter Fab is also the same. The machines do have an upper limit of how much power per tick they can consume so of course if it's full of power it will only draw 1 packet.
if you stuff it full of overclockers.... yeah it needs those extra packets.

Not sure but I think under Tekkit the mass fab power input was the exception not the rule. I didn't experiment much though, beyond noting that multiple generator outputs did not seem to add unless combined with a batbox.

If anyone feels like experimenting: It looks as if a "miner" drilling through netherack will need more than 32eu/t if equipped with a diamond drill. I don't think it did in tekkit, and it works fine with a regular drill. I don't think it will accept multiple 32eu packets though as I tried a 128eu/t supply via a transformer.

Also another transformer question: when stepping down is there a limit on how much power outputs from each face?

only as much as the transformer allows. technically it could transmit say LV (32eu/t) from each face at the same time. At least that how myself and Tech used to work around the 512 - MV - LV power slowdown issue.

The transformers only split up the packets. MV transformer takes up to one 512 eu packet per tick and splits it up into 4 128 eu packets. It can output all 4 packets down the same line if only one is connected. If more are connected the power is distributed evenly among those. If all 5 faces are connected that results in 102 eu packets.

4 packets down one line is how I thought it went but on an older FTB pack I got the impression there was a two packets per face limit on a MV transformer.

When I had three loads on one face I'd get insufficient power at times.

Rearranging my machines to put the transformer in the middle seemed to clear it.