Xeon E7-8870 vs 2.66
Primary details
Comparing Xeon 2.66 and Xeon E7-8870 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Series | no data | Intel Xeon E7 |
| Architecture codename | Prestonia (2002) | Westmere-EX (2011) |
| Release date | November 2002 (22 years ago) | 3 April 2011 (13 years ago) |
| Launch price (MSRP) | no data | $4,616 |
Detailed specifications
Xeon 2.66 and Xeon E7-8870 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 1 (Single-Core) | 10 (Deca-Core) |
| Threads | 1 | 20 |
| Base clock speed | no data | 2.4 GHz |
| Boost clock speed | 2.66 GHz | 2.8 GHz |
| Bus type | no data | QPI |
| Bus rate | no data | 6.4 GT/s |
| Multiplier | no data | 18 |
| L1 cache | 16 KB | 64K (per core) |
| L2 cache | 512 KB | 256K (per core) |
| L3 cache | 0 KB | 30 MB (shared) |
| Chip lithography | 130 nm | 32 nm |
| Die size | 217 mm2 | 513 mm2 |
| Maximum core temperature | no data | 69 °C |
| Number of transistors | 55 million | 2,600 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon 2.66 and Xeon E7-8870 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 2 | 8 (Multiprocessor) |
| Socket | 604 | FCLGA1567,LGA1567 |
| Power consumption (TDP) | 89 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon 2.66 and Xeon E7-8870. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 1.0 |
| Hyper-Threading Technology | no data | + |
| Thermal Monitoring | - | + |
Security technologies
Xeon 2.66 and Xeon E7-8870 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon 2.66 and Xeon E7-8870 are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon 2.66 and Xeon E7-8870. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
| Maximum memory size | no data | 4 TB |
| Max memory channels | no data | 4 |
| Maximum memory bandwidth | no data | 34.113 GB/s |
| ECC memory support | - | + |
Pros & cons summary
| Physical cores | 1 | 10 |
| Threads | 1 | 20 |
| Chip lithography | 130 nm | 32 nm |
| Power consumption (TDP) | 89 Watt | 130 Watt |
Xeon 2.66 has 46.1% lower power consumption.
Xeon E7-8870, on the other hand, has 900% more physical cores and 1900% more threads, and a 306.3% more advanced lithography process.
We couldn't decide between Xeon 2.66 and Xeon E7-8870. We've got no test results to judge.
Should you still have questions on choice between Xeon 2.66 and Xeon E7-8870, ask them in Comments section, and we shall answer.
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