In depth comparison and review of Intel Xeon E5645 and Intel Xeon E5-2403. 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 E5645 | Intel Xeon E5-2403 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Xeon E5645 | Intel Xeon E5-2403 |
|---|
| Type | Intel Xeon E5645 | Intel Xeon E5-2403 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Max Supported Qty | 1 | - |
| Compatible Processor Socket | LGA1366 Socket | LGA1356 Socket |
| Core Voltage | 0.75 V - 1.35 V | 0.6 V - 1.35 V |
| Manufacturing Process | 32 nm | 32 nm |
| Thermal Design Power | 80 W | 80 W |
| Thermal Specification | 76.2 °C | - |
| PCI Express Revision | - | 3.0 |
| PCI Express Lanes Qty | - | 24 |
| Architecture Features | Hyper-Threading Technology, Demand Based Switching, Execute Disable Bit capability, Intel Virtualization Technology | SpeedStep technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel Turbo Boost Technology, Intel Trusted Execution Technology |
| PERFORMANCE |
|---|
| Number of Cores | 6-core | Quad-Core |
|---|---|---|
| Number of Threads | 12 threads | 4 threads |
| Clock Speed (Frequency) | 2.4 GHz | 1.8 GHz |
| Max Turbo Speed | 2.67 GHz | - |
| Bus Speed | 1333 MHz | 1066 MHz |
| 64-bit Computing | Yes | Yes |
| CACHE MEMORY |
|---|
| Cache | 12 MB | 10 MB |
|---|---|---|
| Cache Memory Details | L2 - 6 x 256 KB L3 - 12 MB |
10 MB |
| Installed Size | 12 MB | 10 MB |
| Type | Advanced Smart Cache | - |
| EXPANSION & CONNECTIVITY | Intel Xeon E5645 | Intel Xeon E5-2403 |
|---|
| Compatible Slots | 1 x processor | 1 x processor |
|---|
| MISCELLANEOUS | Intel Xeon E5645 | Intel Xeon E5-2403 |
|---|
| Included Accessories | Cooler (fansink) | Passive heatsink |
|---|---|---|
| Compliant Standards | RoHS | RoHS |
| Service & Support | 1-year warranty | Limited warranty - 1 year |
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