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Intel’s Core X-series launch was a 2017 rollout, not a current availability announcement. In its August 7, 2017 announcement, Intel said 4- to 10-core models were already on shelves at multiple retailers, while its 14- to 18-core models—including the 18-core Core i9-7980XE—would be available starting September 25, 2017. The “18 in October” wording does not match Intel’s published date.
What Intel announced, and when
Intel’s August 7, 2017 newsroom announcement updated availability for its Core X-series high-end desktop processors. Intel said the 4- to 10-core models were already available from multiple retailers. The 10-core model was the Core i9-7900X. Intel then gave these dates for the higher-core-count models:
| Core X-series models | Intel’s announced availability |
|---|---|
| 4- to 10-core models, including the 10-core i9-7900X | Already on shelves at multiple retailers on August 7, 2017 |
| 12-core model | Starting August 28, 2017 |
| 14- to 18-core models, including the 18-core i9-7980XE | Starting September 25, 2017 |
These dates describe Intel’s 2017 announcement, not present-day retail stock. Intel’s release states September 25 for the 14- to 18-core processors; it does not confirm an October release for the 18-core model. Intel’s August 7, 2017 announcement
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The i9-7900X was the 10-core option in Intel’s initial availability group. The i9-7980XE topped the announced range at 18 cores and 36 threads. Intel’s current product records list these specifications:
#1 Best Overall
- Game without compromise. Play harder and work smarter with Intel Core 14th Gen processors
- 24 cores (8 P-cores plus 16 E-cores) and 32 threads. Integrated Intel UHD Graphics 770 included
- Leading max clock speed of up to 6.0 GHz gives you smoother game play, higher frame rates, and rapid responsiveness
- Compatible with Intel 600-series (with potential BIOS update) or 700-series chipset-based motherboards
- DDR4 and DDR5 platform support cuts your load times and gives you the space to run the most demanding games
| Processor | Cores / threads | Cache | Maximum turbo frequency | Intel-listed launch quarter |
|---|---|---|---|---|
| Core i9-7900X | 10 / 20 | 13.75 MB | Up to 4.30 GHz | Q2 2017 |
| Core i9-7980XE Extreme Edition | 18 / 36 | 24.75 MB | Up to 4.20 GHz | Q3 2017 |
Turbo frequency is not a promise that every core will sustain that clock during every workload. These are Intel product-listing figures, not a head-to-head benchmark. For the specifications, see Intel’s i9-7900X specifications and i9-7980XE specifications.
What the Core X-series and X299 platform offered
Intel positioned Core X-series processors for demanding desktop work such as content creation, gaming, virtual reality, and overclocking. The company associated the family with the X299 chipset and said more than 200 X299 motherboards were available alongside the 4- to 10-core models in 2017. Intel also described the platform as offering up to 68 PCIe 3.0 lanes; that is a platform-level maximum, not a guarantee that every CPU-and-motherboard configuration exposes the same usable connections.
Rank #2
- Socket LGA 2066
- Compatibale with Intel X299 Chipset
- 12 Cores/24 Threads
- Intel Turbo Boost Max Technology 3.0 up to 4.40GHz
- Intel Optane memory ready and support for Intel Optane SSDs
Intel’s 2017 launch release claimed up to 20% better VR content-creation performance, up to 30% faster 4K video editing, and up to 30% faster gaming “extreme mega-tasking” versus the previous generation. These were Intel’s own comparisons, not independent test results or universal gains. Intel cautioned that results vary with system components, software, operations, and functions. Intel’s release includes its test configuration and qualification.
Intel’s current X299 compatible-products listing includes Core X-series processors. For a build, verify the exact CPU against the motherboard manufacturer’s support list and required BIOS version; chipset compatibility alone does not confirm support on every X299 board.
Rank #3
- Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter, and quicker.
- Core and Threads 24 cores (8 P-cores plus 16 E-cores) and 24 threads. Integrated Intel Graphics included
- Performance Hybrid Architecture Integrates two core microarchitectures, prioritizing and distributing workloads to optimize performance
- Performance Unlocked Up to 5.7 GHz unlocked. 40MB Cache
- Compatibility Compatible with Intel 800 series chipset-based motherboards
What availability means today
The launch dates are historical. Intel currently marks the i9-7900X retired and discontinued, so Intel’s old “available now” statement should not be read as evidence of normal new-product stock today. Intel Core X-series product records and the i9-7900X specifications page provide Intel’s current product status and specifications.
Intel’s product listing establishes specifications and launch quarter, but it does not establish current retailer inventory, used-market pricing, or comparative value today. Anyone considering a legacy part should check the seller’s live listing and condition, then confirm motherboard and firmware support before buying.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
