Intel Core 2 Extreme QX9775 vs Intel Xeon L5520
Physical Specifications
| Socket | Intel Socket 771 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 45 nm | 45 nm |
| Transistors | 820 million | 731 million |
| Die size | 2x 107 mm² | 263 mm² |
| Package | FC-LGA6 | FC-LGA8 |
| tCaseMax | 63°C | — |
Performance
| Frequency | 3.2 GHz | 2.266 GHz |
|---|---|---|
| Turbo clock | — | up to 2.533 GHz |
| Base clock | 400 MHz | 133 MHz |
| Multiplier | 8.0x | 17.0x |
| Multiplier unlocked | Yes | No |
| Voltage | 1.35 V | 1.35 V |
| TDP | 150 W | 60 W |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Mar 24th, 2008 | Mar 30th, 2009 |
| Codename | Yorkfield | Gainestown |
| Generation | Core 2 Extreme | Xeon |
| Part | EU80574XL088N | SLBFA |
| Memory support | DDR2 | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | — | Gen 2 |
Cores
| Total Cores | 4 | 4 |
|---|---|---|
| Total Threads | 4 | 8 |
| SMP # CPUs | 1 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 64K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 12MB (shared) | 256K (per core) |
| Cache L3 | — | 8MB (shared) |
Notes
| Notes | Being an Extreme Edition processor, it features an unlocked FSB multiplier that allows users to set the multiplier value above its shipped value. Unlike the QX9770, this chip uses the LGA-771 socket and is only compatible with Intel D5400XS "Skulltrail", | — |
|---|
Features & Technologies
| EIST | Yes | Yes |
|---|---|---|
| HTT | — | Yes |
| Intel 64 | Yes | Yes |
| MMX | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.1 | Yes | — |
| SSE4.2 | — | Yes |
| SSSE3 | Yes | Yes |
| TXT | — | Yes |
| VT-x | Yes | Yes |
| XD-Bit | — | Yes |
