【NEC】PX7800SV and PX7600SV

NEC rolled out two new lines in the Parallel ACOS series — the PX7800SV and the PX7600SV — in April 1998. The PX7800SV line in particular ran on the newly developed NOAH-4, a CMOS processor, and set the world speed record with the 32 NOAH-4 processor model. The PX7800SV line consisted of 17 models with twice the speed on a standalone basis of previous models. The PX7600SV line consisted of nine models with 1.6 times the speed on a standalone basis of previous models. Together the two lines offered a 250-fold performance range. All models ran the ACOS-4/NPX operating system.

NEC developed the NOAH-4 CMOS processor using a 0.25 micron semiconductor process. The 32-processor model reached world-record speeds. The NOAH-4 processor had the same standalone performance as the bipolar processor used with the ACOS system 3800 but gave five to nine times the cost effectiveness, required only one-fifth the mounting space, and consumed only 1/35 the power.

Main specifications of the PX7800SV
Model 313
SV
314
SV
321
SV
322
SV
323
SV
324
SV
326
SV
328
SV
334
SV
No. of processors 1 1 2 2 2 2 3 4 6
Main memory capacity 256 - 2,048MB
Expanded memory capacity 256 - 32,768MB
Max. number of channels Electric/optical: 1,024; high-speed optical: 256; high-speed optical loop: 256
File-sharing parallel system 16 CPUs max.
Operating system ACOS-4/NPX

Model 338
SV
344
SV
348
SV
358
SV
368
SV
378
SV
388
SV
398
SV
No. of processors 8 10 12 16 20 24 28 32
Main memory capacity 256 - 2,048MB 512 - 2,048MB
Expanded memory capacity 256 - 32,768MB
Max. number of channels Electric/optical: 1,024; high-speed optical: 256; high-speed optical loop: 256
File-sharing parallel system 16 CPUs max.
Operating system ACOS-4/NPX

 
NEC Parallel ACOS series/PX7600SVNEC Parallel ACOS series/PX7800SV