| Product | Xeon E5-1660 v4 | Xeon E5-4650 v4 |
| Brand | Intel | Intel |
| Street Price (Approx) | ~ $1113 Search low Xeon E5-1660 v4 price (Amazon) | ~ $3838 Search low Xeon E5-4650 v4 price (Amazon) |
| # CPU Cores | 8 | 14 |
| Frequency (GHz) | 3.2 GHz | 2.2 GHz |
| Cache (MB) | 20 | 35 |
| TDP (Watts) | 140 W | 105 W |
| Product Segment | Server | Server |
| Status | Released | Released |
| Announced On | 2016-03-01 | 2016-03-01 |
| Technicals | Xeon E5-1660 v4 | Xeon E5-4650 v4 |
| Dimensions (2D) | 45x45 mm | 45x45 mm |
| Conflict Free? | 1 | 1 |
| # CPU Cores | 8 | 14 |
| Threads/Core | 16 | 28 |
| Frequency (GHz) | 3.2 GHz | 2.2 GHz |
| Turbo Frequency (GHz) | 3.8 GHz | 2.8 GHz |
| Cache (MB) | 20 | 35 |
| Instructions Width (bits) | 64 | 64 |
| Instructions Extensions | AVX 2.0 | AVX 2.0 |
| Lithography Process (nm) | 14 nm | 14 nm |
| TDP (Watts) | 140 W | 105 W |
| Max RAM | 1.54 GB | 1.54 GB |
| RAM Types | DDR4 1600/1866/2133/2400 | DDR4 |
| # Memory Channels | 4 | 4 |
| Memory Bandwidth (GB/Sec) | 76.8GB/s | 68GB/s |
| Max CPU / Package | 1 | 4 |
| GPU | None | None |
| PCI-E Version | 3 | 3 |
| PCI-E Max Lanes # | 40 | 40 |
| Compatible Sockets | FCLGA2011-3 | FCLGA2011-3 |
| Intel Turbo Boost Version | 2 | 2 |
| Intel V-Pro | Yes | |
| Intel Hyper-Thread | Yes | Yes |
| Intel Virtualization (VTX) | Yes | Yes |
| Intel Directed I/O (VTD) | Yes | Yes |
| Intel Ext. Page Tables (EPT) | Yes | Yes |
| Intel TSX Sync. Extensions | Yes | Yes |
| Intel 64 | Yes | Yes |
| Idle States | Yes | Yes |
| Enhanced Speedstep | Yes | Yes |
| Thermal MonitoringTech. | Yes | Yes |
| Flex Memory | No | No |
| Intel ID Protect | Yes | |
| Intel AES New Instructions | Yes | Yes |
| Intel Secure Key | Yes | Yes |
| Intel OS Guard | Yes | Yes |
| Trusted Execution | Yes | Yes |
| Execution Disable | Yes | Yes |