At the end of September, AMD took the opportunity to renew its processor families and introduce no fewer than six new standards with new Athlon II X2, Athlon II X3 and Athlon II X4 same but also a handful of new Phenom II.
Let’s say it bluntly, the changes proposed by the former founder of Sunnyvale are nothing revolutionary, since it is simply speed-bump, that is to say an increase in operating frequency of its processors.
new architecture for lack Bulldozer being planned for 2011, we chose to stop on the two new high-end processors offered by AMD: Phenom II X4 970 Black Edition, which comes with four cores tease 3.5 GHz and equivalent to six cores, the Phenom II X6 1075T.
AMD Phenom II reminders on architecture
In one case as in the other, be it the Phenom II X4 or Phenom II X6, architecture chips offered by AMD’s native. Understand is that all execution cores are combined on the same die, which is also the case with Intel’s latest processors.
Among the characteristics of the Phenom II architecture, remember that the memory controller is integrated in the chip and the socket AM3 Phenom have a DDR3 memory controller dual-channel. On the side of the layout of the cache, the Phenom II chips have three levels of cache, the cache third level said L3 being the most generous in terms of size then it is shared between all cores. The L2 cache is much smaller him while he is unique for each of the execution cores.
With the arrival of the Phenom II six-core, AMD introduced a feature that is not unlike what Intel offers for some time on its Core i3, i5 and i7. This is the Turbo Core supposed to increase the processor’s operating frequency used when the application does not take advantage of the various execution cores: clear in the context of an application monothreaded CPU operating frequency may increase 500 MHz in the best case. As with Intel, the Turbo Core AMD mode is automatic, it is not dependent on software, but its operation is limited by the thermal envelope of the chip. If it heats up way too high, the Turbo Core does not switch ON.
Edited on 12/07/2012 at 9:56