AMD EPYC Embedded 3251 vs AMD Phenom II X2 555 BE
Physical Specifications
| Socket | AMD BGA SP4r2 | AMD Socket AM3 |
|---|---|---|
| Foundry | GlobalFoundries | — |
| Process size | 14 nm | 45 nm |
| Transistors | 4,800 million | 758 million |
| Die size | 213 mm² | 258 mm² |
| Package | FC-BGASP4r2 | µPGA |
| tCaseMax | 105°C | — |
Performance
| Frequency | 2.5 GHz | 3.2 GHz |
|---|---|---|
| Turbo clock | up to 3.1 GHz | — |
| Base clock | 100 MHz | 200 MHz |
| Multiplier | 25.0x | 16.0x |
| Multiplier unlocked | Yes | Yes |
| TDP | 50 W | 80 W |
| Voltage | — | 1.4 V |
Architecture Details
| Vertical Segment | Server/Workstation | Desktop |
|---|---|---|
| Production status | Active | End-of-life |
| Release date | Feb 21st, 2018 | Jan 25th, 2010 |
| Codename | Zen | Callisto |
| Generation | EPYC Embedded | Phenom II X2 |
| Part | unknown | HDZ555WFK2DGMHDZ555WFGMBOX |
| Memory support | DDR4-2666 MHz Dual-channel | DDR3 Dual-channel |
| ECC memory | Yes | No |
| PCI Express | Gen 3 | Gen 2 |
Cores
| Total Cores | 8 | 2 |
|---|---|---|
| Total Threads | 16 | 2 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 96K (per core) | 128K (per core) |
|---|---|---|
| Cache L2 | 512K (per core) | 512K (per core) |
| Cache L3 | 16MB (shared) | 6MB (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. | This processor comes with an unlocked base clock multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking. It is branded under the Black Edition label. |
|---|
Features & Technologies
| 3DNow! | Yes | Yes |
|---|---|---|
| AMD-V | Yes | Yes |
| AMD64 | Yes | Yes |
| CnQ | Yes | — |
| MMX | Yes | Yes |
| NX bit | Yes | Yes |
| SMT | Yes | — |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4A | Yes | Yes |
