Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Model | Processors Supported | FSB/HT Frequency (MHz) | Memory | PCI-Express | SATA | PATA | Sound |
| --- | --- | --- | --- | --- | --- | --- | --- |
| nForce 500 | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 / DDR | x16: 1 slot x1: 3 slots | 4 Ports 1.5 Gbit/s | 4 Ports | AC'97 |
| nForce 500 Ultra | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 / DDR | x16: 1 slot x1: 3 slots | 4 Ports 3 Gbit/s | 4 Ports | AC'97 |
| nForce 500 SLI | Athlon 64 X2, Athlon 64 Socket AM2 | HT 1 GHz | DDR2 / DDR | x8: 2 slots x1: 3 slots | 4 Ports 3 Gbit/s | 4 Ports | AC'97 |
| nForce 520 LE | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 | x16: 1 slot x1: 2 slots | 2 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 520 | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 | x16: 1 slot x1: 3 slots | 4 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 550 | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 | x16: 1 slot x1: 4 slots | 4 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 560 | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 | x16: 1 slot x1: 3 slots | 4 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 560 SLI | Athlon 64 X2, Athlon 64 Socket AM2 | HT 1 GHz | DDR2 | x8: 2 slots x1: 2 slots | 4 Ports 3 Gbit/s | 4 Ports | AC'97 |
| nForce 570 Ultra | Athlon 64 X2, Athlon 64, Sempron Socket AM2 | HT 1 GHz | DDR2 | x16: 1 slot x1: 4 slots | 6 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 570 LT SLI | Athlon 64 X2, Athlon 64 Socket AM2 | HT 1 GHz | DDR2 | x8: 2 slots x1: 2 slots | 4 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 570 SLI | Athlon 64 X2, Athlon 64 Socket AM2 | HT 1 GHz | DDR2 | x16: 1 slot x8: 1 slot x1: 4 slots | 6 Ports 3 Gbit/s | 2 Ports | HDA |
| nForce 590 SLI | Athlon 64 FX, Athlon 64 X2, Athlon 64 Socket AM2 | HT 1 GHz | DDR2 | x16: 2 slots x8: 1 slot x1: 6 slots | 6 Ports 3 Gbit/s | 2 Ports | HDA |
Question:
What are the processors supported by a ddr2 memory and the nforce 550 model?
Answer:
Athlon 64 X2, Athlon 64, Sempron Socket AM2