In the the thrash metal genre, there were many bands that pushed thier music to extremes, in temrs of speed and agression, such as sadus, Incubus, Dark Angel, and Agressor. In the past, I have found many people call the drumming style of certain bands in particular, blast beats, when they are actually pulling off thrash beats at extreme tempos (take Incubus on serpent temptation for example.) Many albums, such as Enjoy the Violence, Illusions, Serpent Temptations, And Neverending destiny use as faster type of the thrash beat known as the hyper-snare.
Regarding the band Necrodeath. On the album Into The Macabre (1987), many claim this album is chalk full of blast beats. I beg to differ. Would you consider the drumming to be in a blast beat style, or just extremely fast paced thrash beats (as on serpent Temptation from Incubus)? It seems to me as if the are just pulling of fast thrash beats or Hyper-Snare as the drummer hit s the bass drum before are after each hit of the snare as done in a proper thrash beat, only played much faster than normal, but many would claim that they are amoung the first to incorperate the blast beat. What is you're oppinion?

No there are definitely blasts on the album. A perfect of one is in the song Sauthenrom, the fast thrash beats that you are talking about start about 24 seconds in and then it turns into a blast at about 52 seconds.

I guess you're right. It's just the way they are executed that sound different from regular blast-beats.

The earliest blast beats were quite slow by today's standards, sometimes as low as 130 beats per minute, resulting in what is essentially a sped up polka. Since blast beats are typically 16th notes being played over a standard 4/4 rhythm (that is, the kick and snare being alternated 8 times per measure), 130bpm is an acceptable tempo for slow blasting. However, there were thrash bands playing at about twice that speed (260bpm) or more, with the drummer instead playing 8th note thrash/skank beats (that is, the kick and snare only alternating 4 times per measure), which at that tempo ends up sounding like really slow blast beats. This can create confusion, since that means that a thrash beat can be faster than a blast beat, depending on whether the drummer is playing 8th or 16th notes. The "hyper-snare" that was mentioned is probably a reference to hyper blasts, which are usually the same as normal blasts but with 16 hits of the snare instead of 8 alternated ones.