Intel Core i7-4558U vs Intel Core i7-940
Physical Specifications
| Socket | Intel BGA 1168 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 22 nm | 45 nm |
| Transistors | 1,300 million | 731 million |
| Die size | 118 mm² | 263 mm² |
| Package | FC-BGA1168 | FC-LGA8 |
Performance
| Frequency | 2.8 GHz | 2.933 GHz |
|---|---|---|
| Turbo clock | up to 3.3 GHz | up to 3.2 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 28.0x | 22.0x |
| Multiplier unlocked | No | No |
| TDP | 28 W | 130 W |
| Voltage | — | 1.375 V |
Architecture Details
| Vertical Segment | Mobile | Desktop |
|---|---|---|
| Production status | unknown | End-of-life |
| Release date | Jun 4th, 2013 | Nov 17th, 2008 |
| Codename | Haswell-ULT | Bloomfield |
| Generation | Core i7 | Core i7 |
| Part | SR188 | SLBCK |
| Memory support | DDR3 | DDR3 Triple-channel |
| ECC memory | No | No |
| PCI Express | — | Gen 2 |
Cores
| Total Cores | 2 | 4 |
|---|---|---|
| Total Threads | 4 | 8 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | Intel HD 5100 | — |
Cache
| Cache L1 | 64K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 256K (per core) | 256K (per core) |
| Cache L3 | 4MB (shared) | 8MB (shared) |
Features & Technologies
| AES-NI | Yes | — |
|---|---|---|
| AVX | Yes | — |
| EIST | Yes | Yes |
| HTT | Yes | Yes |
| Intel 64 | Yes | Yes |
| MMX | Yes | Yes |
| SMT | — | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.2 | Yes | Yes |
| SSSE3 | Yes | — |
| TXT | Yes | Yes |
| VT-d | Yes | — |
| VT-x | Yes | Yes |
| XD bit | Yes | — |
| XD-Bit | — | Yes |
