Side by side comparison and review of Intel Xeon E3-1275V3 and Intel Xeon E5520. 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 E3-1275V3 | Intel Xeon E5520 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Xeon E3-1275V3 | Intel Xeon E5520 |
|---|
| Type | Intel Xeon E3-1275V3 | Intel Xeon E5520 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Packaging Type | - | FC-LGA8 |
| Compatible Processor Socket | LGA1150 Socket | LGA1366 Socket |
| Core Voltage | - | 1.4 V |
| Manufacturing Process | 22 nm | 45 nm |
| Thermal Design Power | 84 W | 80 W |
| Thermal Specification | - | 76 °C |
| PCI Express Revision | 3.0 | - |
| PCI Express Configurations | 1x16, 2x8, 1x8, 2x4 | - |
| PCI Express Lanes Qty | 16 | - |
| Architecture Features | Enhanced SpeedStep technology, Hyper-Threading Technology, 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 Anti-Theft Technology, Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Intel Virtualization Technology for Directed I/O (VT-d), Intel vPro Technology, Idle States, Intel VT-x with Extended Page Tables (EPT), Intel Identity Protection Technology, Intel Secure Key, Intel Advanced Vector Extensions 2 (AVX2.0), Intel TSX-NI, Intel Stable Image Platform Program (SIPP), Intel OS Guard | Hyper-Threading Technology, Intel Intelligent Power Technology, Intel Data Center Manager |
| PERFORMANCE |
|---|
| Number of Cores | Quad-Core | Quad-Core |
|---|---|---|
| Number of Threads | 8 threads | 8 threads |
| Clock Speed (Frequency) | 3.5 GHz | 2.26 GHz |
| Max Turbo Speed | 3.9 GHz | 2.53 GHz |
| Bus Speed | - | 1066 MHz |
| 64-bit Computing | - | Yes |
| CACHE MEMORY |
|---|
| Cache | 8 MB | 8 MB |
|---|---|---|
| Cache Memory Details | Smart Cache - 8 MB | Smart Cache - 8 MB |
| Installed Size | 8 MB | 8 MB |
| Type | - | Advanced Smart Cache |
| RAM |
|---|
| Technology | - | DDR3 SDRAM - 1066 MHz |
|---|
| INTEGRATED GRAPHICS (GPU) | Intel Xeon E3-1275V3 | Intel Xeon E5520 |
|---|
| Type | Intel HD Graphics P4600 | - |
|---|---|---|
| Base Frequency | 350 MHz | - |
| Max Dynamic Frequency | 1.25 GHz | - |
| Features | Intel FDI, Intel Clear Video HD Technology, InTRU 3D Technology, Intel Quick Sync Video, Triple Display Capable | - |
| EXPANSION & CONNECTIVITY | Intel Xeon E3-1275V3 | Intel Xeon E5520 |
|---|
| Compatible Slots | - | 1 x processor |
|---|
| MISCELLANEOUS | Intel Xeon E3-1275V3 | Intel Xeon E5520 |
|---|
| Included Accessories | - | Heat sink |
|---|---|---|
| Compliant Standards | - | RoHS |
| Service & Support | - | 1-year warranty |
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