In depth comparison and review of Intel Xeon E5-4640 and Intel Xeon E3-1275. Compare dimensions, performance, cache memory, number of cores, clock speed, RAM, power efficiency and other important specifications and features to easily choose the right CPU for you. Our goal is to help you uncover differences between the products and find the processor that will best fit your needs.
| GENERAL | Intel Xeon E5-4640 | Intel Xeon E3-1275 |
|---|
| Product Type | Processor | Processor |
|---|---|---|
| Packaged Quantity | 2 (specifications are for single item) | - |
| PROCESSOR | Intel Xeon E5-4640 | Intel Xeon E3-1275 |
|---|
| Type | Intel Xeon E5-4640 | Intel Xeon E3-1275 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Compatible Processor Socket | LGA2011 Socket | LGA1155 Socket |
| Core Voltage | 0.6 V - 1.35 V | - |
| Manufacturing Process | 32 nm | 32 nm |
| Thermal Design Power | 95 W | 95 W |
| Thermal Specification | - | 72.6 °C |
| PCI Express Revision | 3.0 | 2.0 |
| PCI Express Lanes Qty | 40 | 20 |
| Architecture Features | SpeedStep technology, Execute Disable Bit capability, Intel Trusted Execution Technology, Intel Turbo Boost Technology 2.0, Intel vPro Technology | 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) |
| PERFORMANCE |
|---|
| Number of Cores | 8-core | Quad-Core |
|---|---|---|
| Number of Threads | 16 threads | 8 threads |
| Clock Speed (Frequency) | 2.4 GHz | 3.4 GHz |
| Max Turbo Speed | 2.8 GHz | 3.8 GHz |
| Bus Speed | 1600 MHz | - |
| 64-bit Computing | Yes | Yes |
| CACHE MEMORY |
|---|
| Cache | 20 MB | 8 MB |
|---|---|---|
| Cache Level 1 Size | - | 256 KB |
| Cache Memory Details | L3 - 16 MB | Smart Cache - 8 MB |
| Installed Size | 20 MB | 8 MB |
| INTEGRATED GRAPHICS (GPU) | Intel Xeon E5-4640 | Intel Xeon E3-1275 |
|---|
| 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 E5-4640 | Intel Xeon E3-1275 |
|---|
| Compatible Slots | 1 x processor - LGA2011 Socket | 1 x processor - LGA1155 Socket |
|---|
| MISCELLANEOUS | Intel Xeon E5-4640 | Intel Xeon E3-1275 |
|---|
| Included Accessories | - | Heat sink |
|---|---|---|
| Compliant Standards | Halogen-free | Halogen-free |
| Service & Support | - | Limited warranty - 3 years |
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
