Product Comparison: Intel Core i9-9940X vs Intel Core i9-7940X


General Specifications
Brand
Intel
Intel
Model
Core i9-9940X
Core i9-7940X
Origin
China
China
About the Product
The Core i9-9940X 3.3 GHz Fourteen-Core LGA 2066 Processor from Intel has a base clock speed of 3.3 GHz and comes with features such as Intel Optane Memory and SSD support, AES-NI encryption, Intel vPro technology, Intel TXT, and Intel VT-d virtualization technology for directed I/O.
Experience extreme performance that makes gameplay so realistic that the line between game and reality is blurred. The Intel Core i9-7940X processor has a multiplier unlocked for extra headroom.
Package Size
Height
4.57 in.
4.57 in.
Width
3.98 in.
3.98 in.
Depth
1.73 in.
1.73 in.
Weight
1.3 lbs.
1.3 lbs.
Details
Socket
FCLGA2066
FCLGA2066
Lithography
14 nm
14 nm
Type of Processors
Desktop
Desktop
Code Name
Skylake
Skylake
What customers say about "Details"
Intel Core i9-9940X CPU Processor
  • Installation was a breeze for the processor. I like it.
  • Easy to install. Good CPU for me.
  • Install was simple and easy. Perfect for my needs.
  • Easy to install. Recommended.
  • I installed in my build computer. Easy installation.
Intel Core i9-7940X CPU Processor
  • Installation was like any other LGA 2066.
  • It was not hard to install it connected very well.
  • It's easy to install, supported by most motherboards.
  • Easy install, works great, and stable.
  • Excellent - just what we ordered. Easy to install.
Technical Specifications
CPU Cores
14
14
CPU Threads
28
28
Clock Speed
3.3 GHz
3.1 GHz
Turbo Clock Speed
4.4 GHz
4.3 GHz
Max TDP
165 W
165 W
Max Temperature
88 °C
102 °C
Data Width
64 bits
64 bits
Virtualization Technology
Yes
Yes
What customers say about "Technical Specifications"
Intel Core i9-9940X CPU Processor
  • I find this processor is fast. Excellent chip.
  • Plenty fast chip for all my needs.
  • Good price and really fast. I recommend.
  • Working good, nice and fast. Would recommend.
  • Terrible condition. Processor is slow.
Intel Core i9-7940X CPU Processor
  • With a good cooling system, this CPU can easily be clocked up on a per core basis.
  • Everything is fast and responsive as it should be and I have lots of overclocking headroom.
  • This is lightning fast on multi-core intensive processes.
  • The CPU is fast and works great.
  • Extremely fast CPU runs at 50 degrees no overheating.
Cache And Memory Specifications
L1 Cache Size
896 kB
448 kB
L2 Cache Size
14000 kB
14000 kB
L3 Cache Size
19250 kB
19250 kB
Max Memory Size
128 GB
128 GB
Memory Types
DDR4
DDR4
Max Memory Channels
4
4
Max Memory Bandwidth
85 GB/s
85 GB/s
What customers say about "Cache And Memory Specifications"
Intel Core i9-9940X CPU Processor
  • Great memory compatibility. I like it.
  • Good with my DDR4 Kingston memory.
  • I like this CPU. Good memory support. Worth buying.
  • The processor works amazing. Great support of memory. Recommended.
  • Recommended for entry level builds! Perfect support DDR4 memory.
Intel Core i9-7940X CPU Processor
  • Very fast CPU and memory. Great processor.
  • Very fast processor and pretty good price. Good memory support.
  • You can now take a high frequency memory for this processor.
  • Very fast, and runs cool. And has great cache capacity.
  • Cache is enough for whatever I throw at it.
Supported Technologies
Execute Disable Bit / Virus Protection
Yes
Yes
Turbo Boost / Turbo Core
Yes
Yes
Enhanced SpeedStep / PowerNow!
Yes
Yes
Hyper-Threading / HyperTransport
Yes
Yes
Warranty / Certifications
Manufacturer Warranty
3 year(s)
3 year(s)
Certifications
CE, FCC
CE, FCC
Other Information
Manufacturer
Other reviews