国外货源，价格相当不错。
SUN Fire V890 CPU:
X7268A 501-6809 CPU/Memory Board w/2× US IV 1050MHz, 8GB
X7270A 501-6962 CPU/Memory Board w/2 × US IV 1.35GHz, 8GB
X7273A 501-7058 CPU/Memory Board w/2 × USIV+ 1.5GHz, 8GB
X7269A 501-6636 CPU/Memory Board w/2 × US IV 1.2GHz, 8GB
X7300A-Z 501-7506/501-7691/501-7881
CPU/Memory Board w/2 × USIV+ 1.8GHz, 8GB