AMD A8-3870K vs Intel Core i5-661
Physical Specifications
| Socket | AMD Socket FM1 | Intel Socket 1156 |
|---|---|---|
| Process size | 32 nm | 32 nm |
| Transistors | 1,178 million | 382 million |
| Die size | 228 mm² | 81 mm² |
| Package | µPGA | FC-LGA10 |
| Foundry | — | Intel |
Performance
| Frequency | 3 GHz | 3.333 GHz |
|---|---|---|
| Turbo clock | — | up to 3.6 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 30.0x | 25.0x |
| Multiplier unlocked | Yes | No |
| Voltage | 1.4125 V | 1.4 V |
| TDP | 100 W | 87 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Dec 20th, 2011 | Jan 7th, 2010 |
| Codename | Llano | Clarkdale |
| Generation | A8 | Core i5 |
| Part | AD3870WNZ43GXAD3870WNGXBOX | SLBNESLBTB |
| Memory support | DDR3 Dual-channel | DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | — | Gen 2, 16 Lanes(CPU only) |
Cores
| Total Cores | 4 | 2 |
|---|---|---|
| Total Threads | 4 | 4 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | Radeon HD 6550D | Intel HD |
Cache
| Cache L1 | 128K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 1MB (per core) | 256K (per core) |
| Cache L3 | — | 4MB (shared) |
Notes
| Notes | This processor comes with an unlocked base clock multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking. | — |
|---|
Features & Technologies
| 3DNow! | Yes | — |
|---|---|---|
| AMD-V | Yes | — |
| AMD64 | Yes | — |
| CnQ | Yes | — |
| HTT | — | Yes |
| Intel 64 | — | Yes |
| MMX | Yes | Yes |
| NX bit | Yes | — |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4 | — | Yes |
| SSE4.1 | — | Yes |
| SSE4.2 | — | Yes |
| SSE4A | Yes | — |
| SSSE3 | — | Yes |
| TBT | — | Yes |
| TXT | — | Yes |
| VT-d | — | Yes |
| VT-x | — | Yes |
| XD-Bit | — | Yes |
