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| Comparison of Entry IBM, Sun, and HP Unix Servers: HPC Workload | Percent | ||
| Small Configurations | Jul 2004 pSeries | Oct 2005 pSeries | Change |
| Vendor | IBM | IBM | |
| Make | pSeries | p5 | |
| Model | 615 Model 6E3 Express | 505 Express | |
| SMP | 1 Socket/1 Core | 1 Socket/1 Core | |
| Processor | Power4+ | Power5+ | |
| Speed | 1.2 GHz | 1.65 GHz | |
| L2 Cache/CPU | 750 KB | 750 KB | |
| Linpack TPP Megaflops | 2,745 | 5,100 | 86% |
| Memory | 2 GB | 2 GB | |
| Disk | 72 GB | 146 GB | |
| OS | AIX 5L 5.2 | AIX 5L 5.3 | |
| List Price | $5,885 | $5,289 | -10% |
| Cost Per Megaflops List | $2.14 | $1.04 | -52% |
| Medium Configurations | Jul 2004 pSeries | Oct 2005 pSeries | |
| Vendor | IBM | IBM | |
| Make | pSeries | p5 | |
| Model | 615 Model 6E3 Express | 510 Express | |
| SMP | 1 Socket/1 Core | 1 Socket/1 Core | |
| Processor | Power4+ | Power5 | |
| Speed | 1.2 GHz | 1.65 GHz | |
| L2 Cache/CPU | 750 KB | 750 KB | |
| Linpack TPP Megaflops | 2,745 | 5,100 | 86% |
| Memory | 2 GB | 2 GB | |
| Disk | 72 GB | 146 GB | |
| OS | AIX 5L 5.2 | AIX 5L 5.3 | |
| List Price | $5,885 | $5,899 | 0% |
| Cost Per Megaflops List | $2.14 | $1.16 | -46% |
| Large Configurations | Jul 2004 pSeries | Oct 2005 pSeries | |
| Vendor | IBM | IBM | |
| Make | pSeries | p5 | |
| Model | 615 Model 6C3 Express | 520+ Express | |
| SMP | 1 Socket/2 Cores | 1 Socket/2 Cores | |
| Processor | Power4+ | Power5+ | |
| Speed | 1.45 GHz | 1.9 GHz | |
| L2 Cache/CPU | 750 KB | 750 KB | |
| Linpack TPP Megaflops | 5,355 | 11,450 | 114% |
| Memory | 4 GB | 4 GB | |
| Disk | 72 GB | 146 GB | |
| OS | AIX 5L 5.2 | AIX 5L 5.3 | |
| List Price | $14,495 | $20,023 | 38% |
| Cost Per Megaflops List | $2.71 | $1.75 | -35% |
| Extra Large Configurations | Jul 2004 pSeries | Oct 2005 pSeries | |
| Vendor | IBM | IBM | |
| Make | pSeries | p5 | |
| Model | 630 Model 6C4 Express | 550+ Express | |
| SMP | 2 Sockets/4 Cores | 2 Sockets/4 Cores | |
| Processor | Power4+ | Power5+ | |
| Speed | 1.45 GHz | 1.9 GHz | |
| L2 Cache/CPU | 750 KB | 750 KB | |
| Linpack TPP Megaflops | 10,990 | 19,495 | 77% |
| Memory | 8 GB | 8 GB | |
| Disk | 72 GB | 146 GB | |
| OS | AIX 5L 5.2 | AIX 5L 5.3 | |
| List Price | $42,995 | $28,253 | -34% |
| Cost Per Megaflops List | $3.91 | $1.45 | -63% |
| Note: These configurations include no database and no tape drive | |||