Core i7-990X Extreme Edition vs Xeon X5660
Primary details
Comparing Xeon X5660 and Core i7-990X Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1389 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.02 | no data |
| Market segment | Server | Desktop processor |
| Series | no data | Intel Core i7EE |
| Architecture codename | Westmere-EP (2010−2011) | Westmere (2010−2011) |
| Release date | 16 March 2010 (14 years ago) | 13 February 2011 (13 years ago) |
| Launch price (MSRP) | $33 | no data |
| Current price | $125 (3.8x MSRP) | $176 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon X5660 and Core i7-990X Extreme Edition 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 | 6 (Hexa-Core) | 6 (Hexa-Core) |
| Threads | 12 | 12 |
| Base clock speed | 2.8 GHz | no data |
| Boost clock speed | 3.2 GHz | 3.46 GHz |
| Bus support | no data | 6.4 GT/s |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 256 KB (per core) | 1.5 MB |
| L3 cache | 12 MB (shared) | 12 MB |
| Chip lithography | 32 nm | 32 nm |
| Die size | 239 mm2 | 239 mm2 |
| Maximum core temperature | 81 °C | no data |
| Number of transistors | 1,170 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon X5660 and Core i7-990X Extreme Edition 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 | 1 (Uniprocessor) |
| Socket | 1366 | no data |
| Power consumption (TDP) | 95 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon X5660 and Core i7-990X Extreme Edition. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Hyper-Threading Technology | + | no data |
Security technologies
Xeon X5660 and Core i7-990X Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon X5660 and Core i7-990X Extreme Edition are enumerated here.
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon X5660 and Core i7-990X Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | no data | 24 GB |
| Maximum memory bandwidth | 32 GB/s | no data |
| ECC memory support | + | no data |
Peripherals
Specifications and connection of peripherals supported by Xeon X5660 and Core i7-990X Extreme Edition.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 16 March 2010 | 13 February 2011 |
| Power consumption (TDP) | 95 Watt | 130 Watt |
Xeon X5660 has 36.8% lower power consumption.
i7-990X Extreme Edition, on the other hand, has an age advantage of 10 months.
We couldn't decide between Xeon X5660 and Core i7-990X Extreme Edition. We've got no test results to judge.
Be aware that Xeon X5660 is a server/workstation processor while Core i7-990X Extreme Edition is a desktop one.
Should you still have questions on choice between Xeon X5660 and Core i7-990X Extreme Edition, ask them in Comments section, and we shall answer.
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