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Core X - Intel
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Core X
Developer Intel
Manufacturer Intel
Type Microprocessors
Introduction May 30, 2017 (announced)
Architecture High-performance, high core count x86 desktop processors
µarch Skylake, Kaby Lake
Word size 64 bit
8 octets
16 nibbles
Process 14 nm
0.014 μm
1.4e-5 mm
Technology CMOS
Clock 3,300 MHz-4,300 MHz
Package FCLGA-2066
Socket Socket R
Succession
Core i7 Extreme Edition

Core X is a family of high-performance and high core count 64-bit x86 microprocessors introduced by Intel in mid-2017.

Overview[edit]

The Core X family was announced during Computex 2017. Core X is effectively a successor to the Core i7 Extreme Edition family which used to feature Intel's flagship model from each architecture. The Core X family has expanded into a series of models ranging from 6 to 18 cores.

Members[edit]

Skylake[edit]

See also: Skylake µarch and Skylake X core

Skylake-based Core X processors were introduced at Computex 2017. Those processors incorporate a large number of changes over their Broadwell counterparts which brings along a performance increase in addition to other improvements. Those processors are also the first to incorporate the new AVX-512 extension. All models have the following common features:

  • TDP: 140, 165 W
  • Mem: Up to 128 GiB of quad-channel DDR4-2666
  • I/O: x28 or x44 PCIe Gen 3
  • ISA: Everything up to AVX-512 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, FMA3, AVX2, and AVX-512)
  • Tech: Turbo Boost 2.0, Turbo Max 3.0, VT-x, VT-d, and SpeedStep
 List of Skylake-based Core X Processors
 Main processorMemoryI/OFeatures
ModelPriceLaunchedCoresThreadsL2$L3$TDPFrequencyTurboTBMTMemory TypeMax PCIeTurbo Max
i7-7800X$ 389.00
€ 350.10
£ 315.09
¥ 40,195.37
26 June 20176126 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
8.25 MiB
8,448 KiB
8,650,752 B
0.00806 GiB
140 W
140,000 mW
0.188 hp
0.14 kW
3.5 GHz
3,500 MHz
3,500,000 kHz
4 GHz
4,000 MHz
4,000,000 kHz
DDR4-240028
i7-7820X$ 599.00
€ 539.10
£ 485.19
¥ 61,894.67
26 June 20178168 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
11 MiB
11,264 KiB
11,534,336 B
0.0107 GiB
140 W
140,000 mW
0.188 hp
0.14 kW
3.6 GHz
3,600 MHz
3,600,000 kHz
4.3 GHz
4,300 MHz
4,300,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
DDR4-266628
i9-7900X$ 999.00
€ 899.10
£ 809.19
¥ 103,226.67
26 June 2017102010 MiB
10,240 KiB
10,485,760 B
0.00977 GiB
13.75 MiB
14,080 KiB
14,417,920 B
0.0134 GiB
140 W
140,000 mW
0.188 hp
0.14 kW
3.3 GHz
3,300 MHz
3,300,000 kHz
4.3 GHz
4,300 MHz
4,300,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
DDR4-266644
i9-7920X$ 1,199.00
€ 1,079.10
£ 971.19
¥ 123,892.67
28 August 2017122412 MiB
12,288 KiB
12,582,912 B
0.0117 GiB
16.5 MiB
16,896 KiB
17,301,504 B
0.0161 GiB
140 W
140,000 mW
0.188 hp
0.14 kW
2.9 GHz
2,900 MHz
2,900,000 kHz
4.3 GHz
4,300 MHz
4,300,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
DDR4-266644
i9-7940X$ 1,399.00
€ 1,259.10
£ 1,133.19
¥ 144,558.67
25 September 2017142814 MiB
14,336 KiB
14,680,064 B
0.0137 GiB
19.25 MiB
19,712 KiB
20,185,088 B
0.0188 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.1 GHz
3,100 MHz
3,100,000 kHz
4.3 GHz
4,300 MHz
4,300,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
DDR4-266644
i9-7960X$ 1,699.00
€ 1,529.10
£ 1,376.19
¥ 175,557.67
25 September 2017163216 MiB
16,384 KiB
16,777,216 B
0.0156 GiB
22 MiB
22,528 KiB
23,068,672 B
0.0215 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
2.8 GHz
2,800 MHz
2,800,000 kHz
4.2 GHz
4,200 MHz
4,200,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
DDR4-266644
i9-7980XE$ 1,999.00
€ 1,799.10
£ 1,619.19
¥ 206,556.67
25 September 2017183618 MiB
18,432 KiB
18,874,368 B
0.0176 GiB
24.75 MiB
25,344 KiB
25,952,256 B
0.0242 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
2.6 GHz
2,600 MHz
2,600,000 kHz
4.2 GHz
4,200 MHz
4,200,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
DDR4-266644
Count: 7

Kaby Lake[edit]

See also: Kaby Lake µarch and Kaby Lake X core

Kaby Lake-based Core X processors were introduced at Computex 2017 at the same time as the Skylake models. Despite that, those processors are far more similar to the high-end Core i7 (Kaby Lake S core) contemporaries in terms of features and capabilities vs the Skylake Core X variants. Likewise, they do not incorporate some of the more significant features such as a high core count, the cache hierarchy, and AVX-512. Additionally, those processors only support dual-channel memory.

  • TDP: 112 W
  • Mem: Up to 64 GiB of dual-channel DDR-2666 memory
  • I/O: x16 PCIe Gen 3
  • ISA: Everything up to AVX2 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, FMA3, AVX2)
  • Tech: Turbo Boost 2.0, Turbo Max 3.0, VT-x, VT-d, and SpeedStep
 List of Kaby Lake-based Core X Processors
 Main processorFeatures
ModelPriceLaunchedCoresThreadsL2$L3$FrequencyTurboTDPHT
i5-7640X$ 242.00
€ 217.80
£ 196.02
¥ 25,005.86
26 June 2017441 MiB
1,024 KiB
1,048,576 B
9.765625e-4 GiB
6 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
4 GHz
4,000 MHz
4,000,000 kHz
4.2 GHz
4,200 MHz
4,200,000 kHz
112 W
112,000 mW
0.15 hp
0.112 kW
i7-7740X$ 339.00
€ 305.10
£ 274.59
¥ 35,028.87
26 June 2017481 MiB
1,024 KiB
1,048,576 B
9.765625e-4 GiB
8 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
4.3 GHz
4,300 MHz
4,300,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
112 W
112,000 mW
0.15 hp
0.112 kW
Count: 2

Skylake Refresh[edit]

See also: Skylake X Refresh

In late 2018 Intel refreshed the entire Skylake X lineup. In addition to the higher clock frequencies achieved as a result of utilizing their mature 14 nm process, those processors also makes use of solder thermal interface material instead of a paste, increasing the thermal conductivity and improving the available overclocking headroom. The refreshed lineup got rid of the hexa-core part and eliminates the PCIe lanes-based segmentation, providing x44 PCIe lanes on all models. Additionally, all models under 12 cores come with a larger L3 cache. Most of the low All models have the following common features:

  • TDP: 165 W
  • Mem: Up to 128 GiB of quad-channel DDR4-2666
  • I/O: x44 PCIe Gen 3
  • ISA: Everything up to AVX-512 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, FMA3, AVX2, and AVX-512)
  • Tech: Turbo Boost 2.0, Turbo Max 3.0, VT-x, VT-d, and SpeedStep
 List of Skylake Refresh-based Core X Processors
ModelPriceLaunchedCoresThreadsL2$L3$TDPFrequencyTurboTBMT
i7-9800X$ 589.00
€ 530.10
£ 477.09
¥ 60,861.37
November 20188168 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
16.5 MiB
16,896 KiB
17,301,504 B
0.0161 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.8 GHz
3,800 MHz
3,800,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
i9-9820X$ 898.00
€ 808.20
£ 727.38
¥ 92,790.34
November 2018102010 MiB
10,240 KiB
10,485,760 B
0.00977 GiB
16.5 MiB
16,896 KiB
17,301,504 B
0.0161 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.3 GHz
3,300 MHz
3,300,000 kHz
4.1 GHz
4,100 MHz
4,100,000 kHz
4.2 GHz
4,200 MHz
4,200,000 kHz
i9-9900X$ 989.00
€ 890.10
£ 801.09
¥ 102,193.37
November 2018102010 MiB
10,240 KiB
10,485,760 B
0.00977 GiB
19.25 MiB
19,712 KiB
20,185,088 B
0.0188 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.5 GHz
3,500 MHz
3,500,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
i9-9920X$ 1,189.00
€ 1,070.10
£ 963.09
¥ 122,859.37
November 2018122412 MiB
12,288 KiB
12,582,912 B
0.0117 GiB
19.25 MiB
19,712 KiB
20,185,088 B
0.0188 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.5 GHz
3,500 MHz
3,500,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
i9-9940X$ 1,387.00
€ 1,248.30
£ 1,123.47
¥ 143,318.71
November 2018142814 MiB
14,336 KiB
14,680,064 B
0.0137 GiB
19.25 MiB
19,712 KiB
20,185,088 B
0.0188 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.3 GHz
3,300 MHz
3,300,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
i9-9960X$ 1,684.00
€ 1,515.60
£ 1,364.04
¥ 174,007.72
November 2018163216 MiB
16,384 KiB
16,777,216 B
0.0156 GiB
22 MiB
22,528 KiB
23,068,672 B
0.0215 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3.1 GHz
3,100 MHz
3,100,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
i9-9980XE$ 1,979.00
€ 1,781.10
£ 1,602.99
¥ 204,490.07
November 2018183618 MiB
18,432 KiB
18,874,368 B
0.0176 GiB
24.75 MiB
25,344 KiB
25,952,256 B
0.0242 GiB
165 W
165,000 mW
0.221 hp
0.165 kW
3 GHz
3,000 MHz
3,000,000 kHz
4.4 GHz
4,400 MHz
4,400,000 kHz
4.5 GHz
4,500 MHz
4,500,000 kHz
Count: 7

See also[edit]

Facts about "Core X - Intel"
designerIntel +
first announcedMay 30, 2017 +
full page nameintel/core x +
instance ofmicroprocessor family +
main designerIntel +
manufacturerIntel +
microarchitectureSkylake + and Kaby Lake +
nameCore X +
packageFCLGA-2066 +
process14 nm (0.014 μm, 1.4e-5 mm) +
socketSocket R +
technologyCMOS +
word size64 bit (8 octets, 16 nibbles) +