AMD Athlon II X4 645 vs AMD FX-8320E
Physical Specifications
| Socket | AMD Socket AM3 | AMD Socket AM3+ |
|---|---|---|
| Process size | 45 nm | 32 nm |
| Transistors | 300 million | 1,200 million |
| Die size | 169 mm² | 315 mm² |
| Package | µPGA | µPGA |
Performance
| Frequency | 3.1 GHz | 3.2 GHz |
|---|---|---|
| Turbo clock | — | up to 4 GHz |
| Base clock | 200 MHz | 200 MHz |
| Multiplier | 15.5x | 16.0x |
| Multiplier unlocked | No | Yes |
| Voltage | 1.4 V | 1.425 V |
| TDP | 95 W | 95 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | Active |
| Release date | Sep 21st, 2010 | Sep 2nd, 2014 |
| Codename | Propus | Vishera |
| Generation | Athlon II X4 | FX |
| Part | ADX645WFK42GMADX645WFGMBOX | FD832EWMW8KHKFD832EWMHKBOX |
| Memory support | DDR3 Dual-channel | DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 4 | 8 |
|---|---|---|
| Total Threads | 4 | 8 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 128K (per core) | 384K |
|---|---|---|
| Cache L2 | 512K (per core) | 8MB |
| Cache L3 | — | 8MB (shared) |
Features & Technologies
| 3DNow! | Yes | — |
|---|---|---|
| AES | — | Yes |
| AMD-V | Yes | Yes |
| AMD64 | Yes | Yes |
| AVX | — | Yes |
| CLMUL | — | Yes |
| CVT16 | — | Yes |
| EVP | — | Yes |
| FMA4 | — | Yes |
| HT3.1 | — | Yes |
| MMX | Yes | Yes |
| NX bit | Yes | — |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.1 | — | Yes |
| SSE4.2 | — | Yes |
| SSE4A | Yes | Yes |
| SSSE3 | — | Yes |
| Turbo Core | — | Yes |
| XOP | — | Yes |
Notes
| Notes | — | 16KB L1 data cache per core. 64KB L1 instruction cache shared per two cores (per module). 2MB L2 cache shared per two cores (per module). This processor comes with an unlocked multiplier, allowing users to set the multiplier value higher than the shipped |
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