Intel Pentium 4 HT 521 vs Intel Pentium D 820
Physical Specifications
| Socket | Intel Socket 775 | Intel Socket 775 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 90 nm | 90 nm |
| Transistors | 125 million | 169 million |
| Die size | 109 mm² | 206 mm² |
| Package | FC-LGA4 | FC-LGA4 |
Performance
| Frequency | 2.8 GHz | 2.8 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 200 MHz | 200 MHz |
| Multiplier | 14.0x | 14.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.425 V | 1.4 V |
| TDP | 84 W | 130 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Jun 12th, 2005 | May 26th, 2005 |
| Codename | Prescott | Smithfield |
| Generation | Pentium 4 HT | Pentium D |
| Part | unknown | SL88T |
| Memory support | DDR1, DDR2, DDR3 Dual-channel | DDR1, DDR2, DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 1 | 2 |
|---|---|---|
| Total Threads | 2 | 2 |
| SMP # CPUs | 1 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 16K | 28K |
|---|---|---|
| Cache L2 | 1MB | 2MB |
Features & Technologies
| EIST | — | Yes |
|---|---|---|
| HTT | Yes | — |
| Intel 64 | — | Yes |
| MMX | Yes | Yes |
| NX-bit | Yes | — |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
