UltraSPARC T2 New Features
The T2 is a commodity derivative of the UltraSPARC series of microprocessors, targeting Internet workloads in computers, storage and networking devices. The processor, manufactured in 65 nm, is available with eight CPU cores, and each core is able to handle eight threads concurrently. Thus the processor is capable of processing up to 64 concurrent threads. Other new features include:
- Speed bump for each thread, increased to 1.6 GHz from 1.2 GHz
- One PCI Express port (x8 1.0) vs. the T1's JBus interface
- Two Sun Neptune 10 Gigabit Ethernet ports (embedded into the T2 processor) with packet classification and filtering
- L2 cache size increased to 4 MB (8-banks, 16-way associative) from 3 MB
- Improved thread scheduling and instruction prefetching to achieve higher single-threaded performance
- Two integer ALUs per core instead of one, each one being shared by a group of four threads
- One floating point unit per core, up from just one FPU for the entire chip
- Eight encryption engines, with each supporting DES, Triple DES, AES, RC4, SHA1, SHA256, MD5, RSA-2048, ECC, CRC32
- Hardware random number generator
- Four dual-channel FBDIMM memory controllers
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