Side by side comparison and review of Intel Xeon E3-1275 and Intel Pentium 1405V2. Compare overall performance, core and thread counts, cache memory, speed, power efficiency, dimensions, socket compatibility and other key specifications and features to simplify the choice of your perfect CPU. Our goal is to make it easier for you to decide on the processor that will best meet your expectations by revealing the main differences between the products.
| GENERAL | Intel Xeon E3-1275 | Intel Pentium 1405V2 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Xeon E3-1275 | Intel Pentium 1405V2 |
|---|
| Type | Intel Xeon E3-1275 | Intel Pentium 1405V2 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Compatible Processor Socket | LGA1155 Socket | LGA1356 Socket |
| Manufacturing Process | 32 nm | 22 nm |
| Thermal Design Power | 95 W | 40 W |
| Thermal Specification | 72.6 °C | - |
| PCI Express Revision | 2.0 | 3.0 |
| PCI Express Configurations | - | X16, x4, x8 |
| PCI Express Lanes Qty | 20 | 24 |
| Architecture Features | Hyper-Threading Technology, Demand Based Switching, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, Intel Trusted Execution Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel Fast Memory Access, Intel Flex Memory Access, Intel Turbo Boost Technology 2.0, Intel Advanced Vector Extensions (AVX), Intel AES New Instructions (AES-NI) | Enhanced SpeedStep technology, Demand Based Switching, Execute Disable Bit capability, Intel 64 Technology, AMD Virtualization, Intel Trusted Execution Technology, Intel Advanced Vector Extensions (AVX), Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Intel Virtualization Technology for Directed I/O (VT-d), Idle States, Intel VT-x with Extended Page Tables (EPT), Intel Secure Key, Intel OS Guard |
| PERFORMANCE |
|---|
| Number of Cores | Quad-Core | Dual-Core |
|---|---|---|
| Number of Threads | 8 threads | 2 threads |
| Clock Speed (Frequency) | 3.4 GHz | 1.4 GHz |
| Max Turbo Speed | 3.8 GHz | - |
| 64-bit Computing | Yes | - |
| CACHE MEMORY |
|---|
| Cache | 8 MB | 6 MB |
|---|---|---|
| Cache Level 1 Size | 256 KB | - |
| Cache Memory Details | Smart Cache - 8 MB | Smart Cache - 6 MB |
| Installed Size | 8 MB | - |
| INTEGRATED GRAPHICS (GPU) | Intel Xeon E3-1275 | Intel Pentium 1405V2 |
|---|
| Type | Intel HD Graphics P3000 | - |
|---|---|---|
| Base Frequency | 850 MHz | - |
| Max Dynamic Frequency | 1.35 GHz | - |
| Features | Dual Display Capable, Intel FDI, Intel Clear Video HD Technology, InTRU 3D Technology, Intel Quick Sync Video | - |
| EXPANSION & CONNECTIVITY | Intel Xeon E3-1275 | Intel Pentium 1405V2 |
|---|
| Compatible Slots | 1 x processor - LGA1155 Socket | - |
|---|
| MISCELLANEOUS | Intel Xeon E3-1275 | Intel Pentium 1405V2 |
|---|
| Included Accessories | Heat sink | - |
|---|---|---|
| Compliant Standards | Halogen-free | - |
| Service & Support | Limited warranty - 3 years | - |
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