AMD cuts to the core with 'Bulldozer' Opterons

[LesGrossman]

Since when 1.8 = 10% performance hit? doesn't 1.8 mean 80% faster? lol
Let's forget that and the K9 comment and focus on the 10% hit.

What it means is that if the structure of two bulldozer modules where made in one bulldozer core it would be 10% faster...

Example: 2 bulldozer modules 50% faster the K10.5, 1 bulldozer core 60% faster then k10.5, there's your 10% hit.

You have misunderstood what I said. Core for core, obviously you can't expect double IPC with a new microarchitecture.

The article said that two Bulldozer cores have a 1.8x increase in parallel performance over a single current generation core.

That is where I got the number of 2.0x, comparing two cores to one core.

Now if we divide that 180% boost by two, we can roughly determine the performance of a single Bulldozer core vs a current generation core. It works out to only 90% of the performance of a current generation core, or 10% slower, which happens to be exactly what the article said.

lol