Re:New EC2 Instance Type - The Cluster GPU Instance
by chesser on Monday November 15, 2010 @05:38AM
(#1905883)
GP:
> > The more depressing observation is that 33.5ECUs are equivalent to 8 cores @ 2.93GHz
You said:
> I don't know where you got 700 MHz from, because by my math, it'd be equivalent to a 1.43 GHz Nehalem core (33.5 / 8 * 2.93)
Transposed.
>>> 8*2.93/33.5
0.69970149253731351
8 cores at 2.93 GHz is 23.44 GHz, which means one compute unit is 700 MHz.
A modern processor can do more per clock than an older processor. In addition, it has a larger cache, faster cache, and a faster memory bus, although on the flip side the memory bus is being shared between more CPUs.
> > The more depressing observation is that 33.5ECUs are equivalent to 8 cores @ 2.93GHz
You said:
> I don't know where you got 700 MHz from, because by my math, it'd be equivalent to a 1.43 GHz Nehalem core (33.5 / 8 * 2.93)
Transposed.
>>> 8*2.93/33.5
0.69970149253731351
8 cores at 2.93 GHz is 23.44 GHz, which means one compute unit is 700 MHz.
A modern processor can do more per clock than an older processor. In addition, it has a larger cache, faster cache, and a faster memory bus, although on the flip side the memory bus is being shared between more CPUs.