Core i7-7820X

Details and Benchmarks for Intel Core i7-7820X

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i7-7820X based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

5,843 Rank: 308
Rank Name Score Visual
304 Xeon E-2324G 5,853
+0.2%
305 Ryzen 7 7435HS 5,853
+0.2%
306 Xeon E-2186G 5,846
+0.1%
307 Xeon E-2134 5,844
+0%
308 Core i7-7820X 5,843
309 AMD Ryzen 5 1600X 5,838
-0.1%
310 Xeon Gold 6210U 5,835
-0.1%
311 Xeon Gold 6212U 5,826
-0.3%
312 Ryzen 5 5500 5,823
-0.3%
313 Core i7-10700F 5,821
-0.4%

View full ranking →

Multicore Score

Multicore performance score for Core i7-7820X based on multi-threaded benchmark results.

5,610 Rank: 351
Rank Name Score Visual
347 Ryzen Z1 5,618
+0.1%
348 Core i7-9800X 5,617
+0.1%
349 Ryzen 7 7735U 5,616
+0.1%
350 Xeon Gold 6132 5,614
+0.1%
351 Core i7-7820X 5,610
352 Ryzen 7 2700X 5,605
-0.1%
353 Xeon Gold 5120T 5,602
-0.1%
354 Xeon E-2278G 5,602
-0.1%
355 Ryzen 5 7540U 5,602
-0.1%
356 Ryzen 7 7736U 5,601
-0.2%

View full ranking →

Singlecore Score

Single-core performance score for Core i7-7820X based on single-threaded benchmark results.

5,998 Rank: 269
Rank Name Score Visual
265 Core i3-7300 6,012
+0.2%
266 Ryzen 5 5500 6,007
+0.2%
267 Ryzen 7 4700G 6,005
+0.1%
268 Intel Core i7-4770R 5,999
+0%
269 Core i7-7820X 5,998
270 Xeon Gold 5416S 5,998
+0%
271 Xeon Gold 6426Y 5,997
+-0%
272 FX-9590 5,996
+-0%
273 Ryzen Threadripper 3960X 5,994
-0.1%
274 Xeon E-2136 5,989
-0.2%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i7-7820X based on integer math, floating point math, and prime number computation benchmarks.

5,018 Rank: 375
Rank Name Score Visual
371 Core i7-10700F 5,022
+0.1%
372 Ryzen 7 PRO 5875U 5,021
+0.1%
373 Ryzen 7 PRO 5850U 5,020
+0%
374 EPYC 7232P 5,019
+0%
375 Core i7-7820X 5,018
376 Xeon w3-2423 5,013
-0.1%
377 Xeon D-1587 5,012
-0.1%
378 Core i9-9900 5,009
-0.2%
379 Core 5 120U 5,008
-0.2%
380 Xeon W-3223 5,007
-0.2%

View full ranking →

Data Processing

Aggregated score for Core i7-7820X based on data encryption, data compression, and string sorting benchmarks.

5,096 Rank: 374
Rank Name Score Visual
370 Xeon Gold 5118 5,103
+0.1%
371 Xeon W-2140B 5,101
+0.1%
372 Ryzen 5 7540U 5,100
+0.1%
373 Ryzen 5 PRO 4650GE 5,099
+0.1%
374 Core i7-7820X 5,096
375 Xeon Silver 4214 5,095
+-0%
376 Xeon E5-4650 v4 5,094
+-0%
377 Xeon E5-2697 v2 5,094
+-0%
378 Core i5-12400F 5,093
-0.1%
379 Ryzen Z1 5,092
-0.1%

View full ranking →

Physics & Compute

Aggregated score for Core i7-7820X based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

5,205 Rank: 281
Rank Name Score Visual
277 Xeon Gold 5117 5,211
+0.1%
278 Ryzen 7 3700X 5,209
+0.1%
279 Ryzen 7 5700G 5,207
+0%
280 Ryzen 7 5700 5,206
+0%
281 Core i7-7820X 5,205
282 Core Ultra 5 226V 5,205
+0%
283 Ryzen 5 5600X 5,203
+-0%
284 Xeon E5-2690 v4 5,201
-0.1%
285 Xeon W-3223 5,199
-0.1%
286 Xeon Gold 5120 5,199
-0.1%

View full ranking →

Core i7-7820X Details

Ranking #308 of 2060 in overall performance, the Intel Core i7-7820X remains a notable presence in the high-end desktop market despite its age. Launched in June 2017, this processor is now nearly nine years old, placing it firmly in the realm of legacy hardware. Yet, its strong single-core performance and high core count ensure it still holds relevance in certain professional and enthusiast workloads. As of March 2026, the i7-7820X competes in a landscape dominated by newer architectures, but its benchmark results reveal a processor that once pushed the boundaries of desktop computing.

Built on Intel’s Skylake-X microarchitecture and manufactured on a 14 nm process, the Core i7-7820X features eight physical cores and 16 threads thanks to Intel Hyper-Threading. It operates at a base frequency of 3.6 GHz and can boost up to 4.5 GHz under optimal conditions, a figure that remains competitive in many applications. The chip is designed for the Socket R4 (FCLGA-2066) platform and includes a substantial 11 MiB L3 cache, which helps maintain high memory throughput. With a TDP of 140 W, the processor demands robust cooling solutions, making it ideal for well-ventilated, high-performance systems.

The i7-7820X supports up to 128 GB of DDR4-2666 memory across a quad-channel memory bus, enabling a maximum memory bandwidth of 85.3 GB/s. While this is impressive for its time, modern platforms now offer higher bandwidths and faster memory speeds. The processor also supports a wide range of Intel technologies, including AVX-512, AVX2, AES-NI, and Intel Turbo Boost Max Technology 3.0, which allows the CPU to dynamically allocate performance to the most demanding cores. However, it does not include integrated graphics, requiring a discrete GPU for visual output.

In benchmark testing, the Core i7-7820X achieves a single-core score of 5998, placing it at #269 among 2060 processors, indicating strong per-core performance. Its multicore score of 5610 ranks it at #351, while its overall score of 5843 places it at #308. These results show that while the i7-7820X remains a capable performer, it is now outpaced by newer processors in both single-threaded and multi-threaded tasks. In the top 50 overall performance list, it is surpassed by modern CPUs such as the Ryzen Threadripper PRO 9995WX and Core Ultra 9 285K, which offer significantly higher scores.

The i7-7820X is best suited for users who value a balance of high core count and strong single-threaded performance in professional applications such as video editing, 3D rendering, and software development. Its unlocked multiplier and support for high-speed memory make it a favorite among overclockers. While it may not be competitive with today’s flagship CPUs, it still offers excellent value for users building or upgrading systems where performance is more critical than cutting-edge features. For those with legacy systems or who prioritize long-term stability over peak performance, the Core i7-7820X remains a solid, if dated, choice.
Frequently Compared

AMD Ryzen 5 PRO 3500U 3 views

AMD Ryzen 3 PRO 2200GE 2 views

AMD Ryzen Threadripper 3970X 2 views

AMD Ryzen 9 PRO 3900 2 views

Intel Xeon E3-1230 V5 1 view

Intel Core M3-7Y32 1 view

AMD A8-7670K 1 view

Intel Pentium E6700 1 view

Intel Celeron 3205U 1 view

Intel Pentium N3530 1 view

Intel Core i7-7820X

Main Specifications

Designer: Intel
Name: Core i7-7820X
Family: Core
Series: i7-7000
Model Number: i7-7820X
Cores: 8
Threads: 16
Base Frequency: 3600 MHz
Turbo Frequency (1 core): 4300 MHz
Turbo Frequency (2 cores): 4300 MHz
Clock Multiplier: 36x (unlocked)
Microarchitecture: Skylake
Core Name: Skylake
Core Family: 6
Core Model: 85
Socket: Socket
Package: FCLGA-2066
Chipset: Lewisburg
Target Segment: Desktop
Max CPUs: 1
TDP: 140 W
Release Price: $599.00

Cache Specifications

L1 Cache: 512 KiB
L1 Instruction Cache: 256 KiB (8-way set associative)
L1 Data Cache: 256 KiB (8-way set associative)
L2 Cache: 8 MiB (16-way set associative)
L3 Cache: 11 MiB (11-way set associative)

Memory Specifications

Supported Memory Type: DDR4-2666
Memory Channels: 4
Maximum Memory: 128 GB
Maximum Bandwidth: 79.47 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 28
PCIe Configuration: 1x16+1x8+1x4, 3x8+1x4

Physical Specifications

Process: 14 nm
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 ABM BMI1 BMI2 FMA3 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT TBT 2.0 EIST SST TXT vPro VT-x VT-d EPT AVX-512 AVX512F AVX512CD AVX512BW AVX512DQ AVX512VL TSX VMD NM KPT PTT MBE Ctrl DL Boost AVX512_VNNI Run Sure AVX-512 TBMT 3.0
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