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| PartNumber | CM8064601466508S R14S | CM8064601466507S R14U | CM8064601466508SR14S |
| Description | CPU - Central Processing Units Xeon E3-1275 v3 Quad CR 3.5GHz FCLGA1150 | CPU - Central Processing Units Xeon E3-1225v3 Quad CR 3.2GHz FCLGA1150 | |
| Manufacturer | Intel | Intel | - |
| Product Category | CPU - Central Processing Units | CPU - Central Processing Units | - |
| RoHS | Y | Y | - |
| Product | Server Processors | Server Processors | - |
| Package / Case | FCLGA-1150 | FCLGA-1150 | - |
| Family | Intel Xeon | Intel Xeon | - |
| Core | Intel Xeon | Intel Xeon | - |
| Code Name | Haswell | Haswell | - |
| Processor Series | E3-1275 v3 | E3-1225V3 | - |
| Embedded Options | Embedded | Embedded | - |
| Number of Cores | 4 Core | 4 Core | - |
| TDP Max | 84 W | 84 W | - |
| Maximum Clock Frequency | 3.5 GHz | 3.2 GHz | - |
| Data Bus Width | 64 bit | 64 bit | - |
| Memory Size | 32 GB | 32 GB | - |
| Memory Type | DDR3L-1333/1600 | DDR3-1333/1600 | - |
| System Bus Type | DMI | - | - |
| Cache Memory | 8 MB | 8 MB | - |
| Maximum Operating Temperature | + 72.6 C | - | - |
| Packaging | Tray | Tray | - |
| Series | E3-1275 | E3-1225v3 | - |
| Package / Case Size | 37.5 mm x 37.5 mm | 37.5 mm x 37.5 mm | - |
| Brand | Intel | Intel | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| CPU Configuration Max | 1 Configuration | 1 Configuration | - |
| ECC Memory Supported | Supported | Supported | - |
| Intel Hyper Threading Technology | With HT Technology | - | - |
| Intel Virtualization Technology VT | With VT | With VT | - |
| Lithography Process Technology | 22 nm | 22 nm | - |
| Number of Displays Supported | 3 Display | 3 Display | - |
| Number of Memory Channels | 2 Channel | 2 Channel | - |
| Number of PCI Express Lanes | 16 Lane | 16 Lane | - |
| Number of Threads | 8 Thread | 4 Thread | - |
| PCIe Configurations | 1x16/2x8/1x8 + 2x4 | - | - |
| PCIe Revision | Revision 3.0 | Revision 3.0 | - |
| Product Type | CPU - Central Processing Units | CPU - Central Processing Units | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Embedded Processors & Controllers | Embedded Processors & Controllers | - |
| Turbo Frequency Max | 3.9 GHz | 3.6 GHz | - |
| Part # Aliases | 927970 | 927974 | - |
| Number of QPI Links | - | 1 Link | - |
| Tradename | - | Xeon | - |