Oracle has officially launched its new generation of processors, the Sparc T4, and a range of servers carrying them. The T4 was a technology in the Sparc line break as it is the first able to execute some instructions in disorder (out-of-order execution).
Sparc T4 also marks a return back on the number of hearts: it has only 8, when the T3 Sparc had 16. Oracle has changed his gun to shoulder for this architecture, emphasizing the effectiveness by thread, rather than the parallelism at all costs. Throughput is substantially comparable, the T4 that can count on a clock speed most high (2.85 GHz or 3 GHz against 1.65 GHz). The manageable number of thread by a CPU is still divided by two (instead of 128 64 threads).
The T4 Sparc, more complex, is a larger and more gourmet chip. With the 40 nm, the die is 403 mm2 (against 371 mm2 for T3) and it consumes up to 240 W (139 W for a T3 16 hearts).
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