AMD Phenom II X2 550 vs AMD Phenom X3 8400
Physical Specifications
| Socket | AMD Socket AM3 | AMD Socket AM2+ |
|---|---|---|
| Process size | 45 nm | 65 nm |
| Transistors | 758 million | 450 million |
| Die size | 258 mm² | 285 mm² |
| Package | µPGA | µPGA |
Performance
| Frequency | 3.1 GHz | 2.1 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 200 MHz | 200 MHz |
| Multiplier | 15.5x | 10.5x |
| Multiplier unlocked | No | No |
| Voltage | 1.4 V | 1.25 V |
| TDP | 80 W | 95 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Nov 4th, 2009 | Mar 27th, 2008 |
| Codename | Callisto | Toliman |
| Generation | Phenom II X2 | Phenom X3 |
| Part | HDX550WFK2DGMHDX550WFGMBOX | HD8400WCJ3BGD |
| Memory support | DDR3 Dual-channel | unknown Dual-channel |
| ECC memory | No | No |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 2 | 3 |
|---|---|---|
| Total Threads | 2 | 3 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 128K (per core) | 128K (per core) |
|---|---|---|
| Cache L2 | 512K (per core) | 512K (per core) |
| Cache L3 | 6MB (shared) | 2MB (shared) |
Features & Technologies
| 3DNow! | Yes | Yes |
|---|---|---|
| AMD-V | Yes | Yes |
| AMD64 | Yes | Yes |
| CnQ | — | Yes |
| HT3.0 | — | Yes |
| MMX | Yes | Yes |
| NX bit | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4A | Yes | Yes |
Notes
| Notes | — | Processor with the older B2 revision and TLB Bug. |
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