Intel Core i7-7820X vs Intel Core i7-6700K

Comparative analysis of Intel Core i7-7820X and Intel Core i7-6700K processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization, Graphics, Graphics interfaces, Graphics image quality, Graphics API support. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).

 

Differences

Reasons to consider the Intel Core i7-7820X

  • CPU is newer: launch date 1 year(s) 9 month(s) later
  • 4 more cores, run more applications at once: 8 vs 4
  • 8 more threads: 16 vs 8
  • Around 2% higher clock speed: 4.30 GHz vs 4.20 GHz
  • Around 55% higher maximum core temperature: 99°C vs 64°C
  • 2x more L1 cache, more data can be stored in the L1 cache for quick access later
  • 2x more L2 cache, more data can be stored in the L2 cache for quick access later
  • Around 38% more L3 cache; more data can be stored in the L3 cache for quick access later
  • 2x more maximum memory size: 128 GB vs 64 GB
  • Around 1% better performance in PassMark - Single thread mark: 2523 vs 2505
  • Around 92% better performance in PassMark - CPU mark: 17166 vs 8935
  • Around 98% better performance in Geekbench 4 - Multi-Core: 8814 vs 4458
  • Around 84% better performance in 3DMark Fire Strike - Physics Score: 5958 vs 3231
  • Around 72% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 10.666 vs 6.186
  • Around 57% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 159.198 vs 101.6
  • Around 24% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.92 vs 0.743
  • 2x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 5.968 vs 2.939
  • 2.2x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 16.376 vs 7.351
Specifications (specs)
Launch date June 2017 vs 5 August 2015
Number of cores 8 vs 4
Number of threads 16 vs 8
Maximum frequency 4.30 GHz vs 4.20 GHz
Maximum core temperature 99°C vs 64°C
L1 cache 64 KB (per core) vs 256 KB
L2 cache 256 KB (per core) vs 1 MB
L3 cache 11264 KB (shared) vs 8 MB
Maximum memory size 128 GB vs 64 GB
Benchmarks
PassMark - Single thread mark 2523 vs 2505
PassMark - CPU mark 17166 vs 8935
Geekbench 4 - Multi-Core 8814 vs 4458
3DMark Fire Strike - Physics Score 5958 vs 3231
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 10.666 vs 6.186
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 159.198 vs 101.6
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.92 vs 0.743
CompuBench 1.5 Desktop - Video Composition (Frames/s) 5.968 vs 2.939
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 16.376 vs 7.351

Reasons to consider the Intel Core i7-6700K

  • Around 54% lower typical power consumption: 91 Watt vs 140 Watt
  • Around 1% better performance in Geekbench 4 - Single Core: 1148 vs 1138
Specifications (specs)
Thermal Design Power (TDP) 91 Watt vs 140 Watt
Benchmarks
Geekbench 4 - Single Core 1148 vs 1138

Compare benchmarks

CPU 1: Intel Core i7-7820X
CPU 2: Intel Core i7-6700K

PassMark - Single thread mark
CPU 1
CPU 2
2523
2505
PassMark - CPU mark
CPU 1
CPU 2
17166
8935
Geekbench 4 - Single Core
CPU 1
CPU 2
1138
1148
Geekbench 4 - Multi-Core
CPU 1
CPU 2
8814
4458
3DMark Fire Strike - Physics Score
CPU 1
CPU 2
5958
3231
CompuBench 1.5 Desktop - Face Detection (mPixels/s)
CPU 1
CPU 2
10.666
6.186
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)
CPU 1
CPU 2
159.198
101.6
CompuBench 1.5 Desktop - T-Rex (Frames/s)
CPU 1
CPU 2
0.92
0.743
CompuBench 1.5 Desktop - Video Composition (Frames/s)
CPU 1
CPU 2
5.968
2.939
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)
CPU 1
CPU 2
16.376
7.351
Name Intel Core i7-7820X Intel Core i7-6700K
PassMark - Single thread mark 2523 2505
PassMark - CPU mark 17166 8935
Geekbench 4 - Single Core 1138 1148
Geekbench 4 - Multi-Core 8814 4458
3DMark Fire Strike - Physics Score 5958 3231
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 10.666 6.186
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 159.198 101.6
CompuBench 1.5 Desktop - T-Rex (Frames/s) 0.92 0.743
CompuBench 1.5 Desktop - Video Composition (Frames/s) 5.968 2.939
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 16.376 7.351
GFXBench 4.0 - Car Chase Offscreen (Frames) 1760
GFXBench 4.0 - Manhattan (Frames) 3294
GFXBench 4.0 - T-Rex (Frames) 3360
GFXBench 4.0 - Car Chase Offscreen (Fps) 1760
GFXBench 4.0 - Manhattan (Fps) 3294
GFXBench 4.0 - T-Rex (Fps) 3360

Compare specifications (specs)

Intel Core i7-7820X Intel Core i7-6700K

Essentials

Architecture codename Skylake Skylake
Launch date June 2017 5 August 2015
Launch price (MSRP) $679 $339
Place in performance rating 1376 1346
Price now $499.99 $316.99
Processor Number i7-7820X i7-6700K
Series Intel® Core™ X-series Processors 6th Generation Intel® Core™ i7 Processors
Status Launched Discontinued
Value for money (0-100) 10.93 10.33
Vertical segment Desktop Desktop

Performance

64 bit support
Base frequency 3.60 GHz 4.00 GHz
Bus Speed 8 GT/s DMI3 8 GT/s DMI3
L1 cache 64 KB (per core) 256 KB
L2 cache 256 KB (per core) 1 MB
L3 cache 11264 KB (shared) 8 MB
Manufacturing process technology 14 nm 14 nm
Maximum case temperature (TCase) 72 °C 72 °C
Maximum core temperature 99°C 64°C
Maximum frequency 4.30 GHz 4.20 GHz
Number of cores 8 4
Number of QPI Links 0 0
Number of threads 16 8
Unlocked

Memory

Max memory channels 4 2
Maximum memory size 128 GB 64 GB
Supported memory types DDR4-2666 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Maximum memory bandwidth 34.1 GB/s

Compatibility

Low Halogen Options Available
Max number of CPUs in a configuration 1 1
Sockets supported FCLGA2066 FCLGA1151
Thermal Design Power (TDP) 140 Watt 91 Watt
Thermal Solution PCG 2017X PCG 2015D (130W)
Package Size 37.5mm x 37.5mm

Peripherals

Max number of PCIe lanes 28 16
PCI Express revision 3.0 3.0
Scalability 1S Only 1S Only
PCIe configurations Up to 1x16, 2x8, 1x8+2x4

Security & Reliability

Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Intel® Identity Protection technology
Intel® Memory Protection Extensions (Intel® MPX)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Secure Boot

Advanced Technologies

Enhanced Intel SpeedStep® technology
Instruction set extensions Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Turbo Boost technology
Number of AVX-512 FMA Units 2
Idle States
Intel® Stable Image Platform Program (SIPP)
Intel® TSX-NI
Intel® vPro™ Platform Eligibility
Thermal Monitoring

Virtualization

Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
AMD Virtualization (AMD-V™)
Intel® VT-x with Extended Page Tables (EPT)

Graphics

Device ID 0x1912
Graphics base frequency 350 MHz
Graphics max dynamic frequency 1.15 GHz
Graphics max frequency 1.15 GHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory 64 GB
Processor graphics Intel® HD Graphics 530

Graphics interfaces

DisplayPort
DVI
eDP
HDMI
Number of displays supported 3
Wireless Display (WiDi) support

Graphics image quality

4K resolution support
Max resolution over DisplayPort 4096x2304@60Hz
Max resolution over eDP 4096x2304@60Hz
Max resolution over HDMI 1.4 4096x2304@24Hz
Max resolution over VGA N / A
Max resolution over WiDi 1080p

Graphics API support

DirectX 12
OpenGL 4.5