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IntelBX80673I77820X
IntelBX80677I77700K
▲ 631,512 ▼

8 Cores, 16 Threads @3.6GHz, Skylake-X.
Release date: Q2 2017.

VS
▲ 8351,395 ▼

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

Effective Speed 
+5%
Real World Speed
Performance profile from 740,836 user samples
Benchmark your CPU here
28,524 User Benchmarks
Best Bench: 92% Base clock 3.6 GHz, turbo 4.7 GHz (avg)
Worst Bench: 70% Base clock 3.6 GHz, turbo 3.85 GHz (avg)
Poor: 70% Great: 92%
SPEED RANK: 233rd / 1442
Gaming
Gaming 80%
Aircraft carrier
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 81%
Aircraft carrier
712,312 User Benchmarks
Best Bench: 92% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 71% Base clock 4.2 GHz, turbo 0.2 GHz (avg)
Poor: 71% Great: 92%
SPEED RANK: 188th / 1442
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 70%
Battleship
Effective Speed
Effective CPU Speed 		80.1 % 84.2 % Slightly faster effective speed.
+5%
Average Score 
+2%
Memory
Avg. Memory Latency 		75.5 Pts 89.6 Pts Lower memory latency.
+19%
1-Core
Avg. Single Core Speed 		121 Pts 127 Pts +5%
2-Core
Avg. Dual Core Speed 		238 Pts 242 Pts +2%
4-Core
Avg. Quad Core Speed 		455 Pts Slightly faster quad-core speed.
+7% 		426 Pts
8-Core
Avg. Octa Core Speed 		822 Pts Faster octa-core speed.
+27% 		647 Pts
Overclocked Score 
+5%
Memory
OC Memory Latency 		85 Pts 96.5 Pts Lower OC memory latency.
+14%
1-Core
OC Single Core Speed 		138 Pts 142 Pts +3%
2-Core
OC Dual Core Speed 		272 Pts 275 Pts +1%
4-Core
OC Quad Core Speed 		533 Pts Faster OC quad-core speed.
+11% 		482 Pts
8-Core
OC Octa Core Speed 		976 Pts Much faster OC octa-core speed.
+32% 		737 Pts
Value & Sentiment 
+405%
Market Share
Based on 67,714,462 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.06 % 0.98 % Insanely higher market share.
+1,533%
Value
Value For Money 		73.8 % 87.5 % Better value.
+19%
User Rating
UBM User Rating 		63 % 83 % Much more popular.
+32%
Price
Price (score) 		$375 $242 Much cheaper.
+35%
Nice To Haves 
+38%
Age
Newest 		81 Months Slightly more recent.
+7% 		87 Months
TDP
Thermal Design Power (TDP) 		140 Watts 91 Watts Much more energy efficient.
+35%
Cores
CPU Processing Cores 		8 cores Hugely higher core count.
+100% 		4 cores
Threads
CPU Processing Threads 		16 threads Hugely higher thread count.
+100% 		8 threads
Lithography
Manufacturing process 		14 nm 14 nm
Base Clock
Base Clock Speed 		3.6 GHz 4.2 GHz Faster base frequency.
+17%
Turbo Clock
Turbo Clock Speed 		4.5 GHz 4.5 GHz
64-Core
OC Multi Core Speed 		1445 Pts Hugely faster OC 64-core speed.
+93% 		747 Pts
64-Core
Avg. Multi Core Speed 		1263 Pts Hugely faster 64-core speed.
+91% 		662 Pts
Specifications 
Series
CPU Architecture 		Skylake-X Kaby Lake
Socket
Motherboard Socket 		LGA2066 FCLGA1151
Graphics
Integrated Graphics 		None HD 630
Launch Date
Launch Date 		Q2'17 Q1'17
Cache
Cache 		11 MB L3 8 MB
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX 2.0, AVX-512 SSE4.1/4.2, AVX 2.0
Recommended Price
Recommended Customer Price 		$589.00 - $599.00 $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency 		4.30 GHz 4.50 GHz
Thermal Solution Specification
Thermal Solution Specification 		PCG 2017X PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type) 		128 GB 64 GB
Memory Types
Memory Types 		DDR4-2666 DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Memory Channels
Max # of Memory Channels 		4 2
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		28 16

More specs » More specs »
Conclusion 
Average Bench 80.1%
Average Bench 84.2%
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The I7-7820X is the second of three new Skylake-X HEDT (high end desktop processors) released by Intel as part of their core X series (the others being the flagship 10-core i9-7900X and the 6-core i7-7800X). The 7820X is an 8-core, 16-thread CPU which will amply satisfy all but the heaviest of multi-threaded use cases. The 7820X requires a relatively expensive X299 (Basin Falls) motherboard, which costs upwards of $250. The 7820X is listed at $599 which is about $200 more than AMD's current flagship 8-core, 16 thread Ryzen 7 1800X. In addition to better IPC, the 7820X is higher clocked with base and max boost clocks of 3.6/4.5 GHz respectively, compared to 3.6G/4.0 GHz for the Ryzen 7 1800X. The additional $200 (50%) buys you around 20% more performance in both single and multi core workloads. Intel have also released several Kabylake-X HEDT CPUs: the 4-thread i5-7640X and the 8-thread i7-7740X and will shortly release of even higher spec Skylake-X processors. It's probably wise to hold off purchasing until the eagerly anticipated 16-core, 32-thread Ryzen Threadripper CPUs are launched later this month. [Jul '17 CPUPro]

MORE DETAILS

The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

MORE DETAILS

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