AMD Athlon 64 X2 4000+ vs AMD Athlon II X2 255
Physical Specifications
| Socket | AMD Socket AM2 | AMD Socket AM3 |
|---|---|---|
| Process size | 65 nm | 45 nm |
| Transistors | 154 million | 410 million |
| Die size | 126 mm² | 117 mm² |
| Package | µPGA | µPGA |
Performance
| Frequency | 2.1 GHz | 3.1 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 200 MHz | 200 MHz |
| Multiplier | 10.5x | 15.5x |
| Multiplier unlocked | No | No |
| Voltage | 1.25 V | 1.15 V |
| TDP | 65 W | 65 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Dec 5th, 2006 | Jan 25th, 2010 |
| Codename | Brisbane | Regor |
| Generation | Athlon 64 X2 | Athlon II X2 |
| Part | ADO4000IAA5DD | ADX255OCK23GQ |
| Memory support | unknown Dual-channel | DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 2 | 2 |
|---|---|---|
| Total Threads | 2 | 2 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 256K | 128K |
|---|---|---|
| Cache L2 | 512K | 1MB |
Features & Technologies
| 3DNow! | Yes | Yes |
|---|---|---|
| AMD-V | Yes | Yes |
| AMD64 | Yes | Yes |
| MMX | Yes | Yes |
| NX bit | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4A | — | Yes |
