Most Technical Heavy Metal Bands

Definitely not the most technical metal band - I guess they are at #1 because they are popular. - Metal_Treasure

Not the best band out there, but they are technical grand masters.

Incredible technique and incredibles musicians!

Each instrumentist in the band is the best on what he does on the entire planet. That's enough to describe them.

The pinnacle of technical death metal

These guys definitely by the end of it won't be anywhere near the most technical band on the list but they are quite different to brain drill and again I'm hoping you will fill the gaps. - technicalbrutaldeath

Ah Brain drill often criticized for their lack of songwriting ability. Keep in mind just how difficult it would be to come up with an entire album let alone multiple albums playing this many notes in A song (their title track of their second album goes for 16 minutes. ) without repeating riffs or dumbing down your music. It's more difficult than one might think (even for talented players. ) - technicalbrutaldeath

Cacophony and Becker was tech as hell!

Tech death supergroup blotted science. With members from bands like watchtower and spastic ink, hate eternal and obscura. Very complex band in general most of their music is quite technical, extremely fast at parts but always complex.

You might be wondering why some of the bands on this list are slower... as I've already stated I'm putting A bunch of bands As A base purposely skipping the majority of ultra speed tech groups (not because I think they have "no feeling" or "aren't music" but because then you're just voting and not truly engaging with this. I want you to fill in the blanks.

Anyway another reason is All of the slower bands I'm choosing are quite technical, they're not like Metallica or megadeth who usually play mid-fast paced simple riffs in A repetitive fashion. These bands generally play quite complex songs that have little repetition and that's the point. The most "Technical" and Technicality is A mixture of SPEED and COMPLEXITY. - technicalbrutaldeath

They are the most technical band I've ever heard. And their sound is so technical.
I made a list about them and you need to play only 2-3 song samples to be convinced - Top 10 Blotted Science Songs - Metal_Treasure

I would put Vektor too, dunno, Sacred Reich, Nuclear Assault probably pops in mind because of being fan of them, but Vektor definitely.

Definitely no where near as technical as the above artists BUT these guys deserve A mention. Easily one of the most technical thrash metal bands (especially in the 80s) other than the likes of "watchtower" who are probably one of if not the only 80s thrash band who competed with these guys. - technicalbrutaldeath

Septuagint
Choir Of Spirits
Orbital Elements
Need I say more

These songs are great but they aren't Obscura's most technical songs. These 3 are on their softest end. - Metal_Treasure

Fast and technical with jaw-dropping virtuosity and very intelligent songwriting.
Lists to check out:
Top 10 Songs on Obscura’s Cosmogenesis
Top 10 Songs on Obscura’s Omnivium
Best Songs On Obscura’s Akróasis
Top 10 Songs On Obscura's Diluvium - Metal_Treasure

As the lead guitarist is influenced by chuck their riffs and solos are the best I love this band

I know I said I wasn't going to add many technical death metal bands but the reason I chose this one is because they are NOT an "ultra-technicaldeathwankery" band. - technicalbrutaldeath

A very good band. - Metal_Treasure

They deserve to be on here. Very skillful and technical, and fast and brutal. They are like a licensed surgeon gone serial killer. - Metal_Treasure

Check out the lists:
Top 10 Songs on Beyond Creation's the Aura
Top 10 Songs on Beyond Creation's Earthborn Evolution - Metal_Treasure

An obscure band within the Neo-classical tradition. They sound similar to Yngwie and put a great emphasis on guitar work.
Check out their metal covers of Vivaldi's Summer and Beethoven's 5th. - Metal_Treasure

A now inactive band from Trois-Rivieres, Canada. One of a kind.