Detailed comparison and review of Intel Xeon E3-1275 and AMD Phenom II X4 945. With our comprehensive overview, you can simply compare overall performance, cache sizes, RAM, power efficiency, architecture, but also other key features of both processors and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the processor that best fits your needs and expectations.
| GENERAL | Intel Xeon E3-1275 | AMD Phenom II X4 945 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Xeon E3-1275 | AMD Phenom II X4 945 |
|---|
| Type | Intel Xeon E3-1275 | AMD Phenom II X4 945 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Max Supported Qty | - | 1 |
| Compatible Processor Socket | LGA1155 Socket | Socket AM3 |
| Power Efficiency | - | Energy Efficient |
| Manufacturing Process | 32 nm | 45 nm |
| Thermal Design Power | 95 W | 95 W |
| Thermal Specification | 72.6 °C | 71 °C |
| PCI Express Revision | 2.0 | - |
| PCI Express Lanes Qty | 20 | - |
| 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) | HyperTransport technology, AMD64 technology, integrated memory controller, Enhanced Virus Protection, AMD Cool'n'Quiet Technology, AMD Virtualization, AMD CoolCore Technology |
| PERFORMANCE |
|---|
| Number of Cores | Quad-Core | Quad-Core |
|---|---|---|
| Number of Threads | 8 threads | - |
| Clock Speed (Frequency) | 3.4 GHz | 3 GHz |
| Max Turbo Speed | 3.8 GHz | - |
| 64-bit Computing | Yes | Yes |
| CACHE MEMORY |
|---|
| Cache | 8 MB | - |
|---|---|---|
| Cache Level 1 Size | 256 KB | - |
| Cache Memory Details | Smart Cache - 8 MB | L2 - 4 x 512 KB L3 - 6 MB |
| Installed Size | 8 MB | 6 MB |
| INTEGRATED GRAPHICS (GPU) | Intel Xeon E3-1275 | AMD Phenom II X4 945 |
|---|
| 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 | AMD Phenom II X4 945 |
|---|
| Compatible Slots | 1 x processor - LGA1155 Socket | 1 x processor - Socket AM3 |
|---|
| MISCELLANEOUS | Intel Xeon E3-1275 | AMD Phenom II X4 945 |
|---|
| Included Accessories | Heat sink | - |
|---|---|---|
| Compliant Standards | Halogen-free | - |
| Service & Support | Limited warranty - 3 years | Limited warranty - 3 years |
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