Side by side comparison and review of Intel Xeon E3-1281V3 and Intel Xeon D-1521. 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 E3-1281V3 | Intel Xeon D-1521 |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Xeon E3-1281V3 | Intel Xeon D-1521 |
|---|
| Type | Intel Xeon E3-1281V3 | Intel Xeon D-1521 |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Compatible Processor Socket | LGA1150 Socket | FCBGA1667 Socket |
| Manufacturing Process | 22 nm | 14 nm |
| Thermal Design Power | 82 W | 45 W |
| PCI Express Revision | 3.0 | 2.0/3.0 |
| PCI Express Configurations | 1x16, 2x8, 1x8, 2x4 | X16, x4, x8 |
| PCI Express Lanes Qty | 16 | 32 |
| Architecture Features | SpeedStep technology, Hyper-Threading Technology, Intel Virtualization Technology, Intel Turbo Boost Technology | Enhanced SpeedStep technology, Hyper-Threading Technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, Intel Trusted Execution Technology, Intel Turbo Boost Technology 2.0, Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Intel Virtualization Technology for Directed I/O (VT-d), Idle States, Intel VT-x with Extended Page Tables (EPT), Intel Secure Key, Intel Advanced Vector Extensions 2 (AVX2.0), Intel TSX-NI, Intel OS Guard |
| PERFORMANCE |
|---|
| Number of Cores | Quad-Core | Quad-Core |
|---|---|---|
| Number of Threads | 8 threads | 8 threads |
| Clock Speed (Frequency) | 3.7 GHz | 2.4 GHz |
| Max Turbo Speed | 4.1 GHz | 2.7 GHz |
| CACHE MEMORY |
|---|
| Cache | 8 MB | 6 MB |
|---|---|---|
| Cache Memory Details | L3 - 8 MB | 6 MB |
| Installed Size | 8 MB | - |
| RAM |
|---|
| Installed RAM Size | 32 GB | - |
|---|
| EXPANSION & CONNECTIVITY | Intel Xeon E3-1281V3 | Intel Xeon D-1521 |
|---|
| Compatible Slots | 1 x processor - LGA1150 Socket | - |
|---|
| MISCELLANEOUS | Intel Xeon E3-1281V3 | Intel Xeon D-1521 |
|---|
| Compliant Standards | RoHS | - |
|---|
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