i7-9800X vs i7-7740X

VS

Aggregate performance score

Core i7-7740X
2017
4 cores / 8 threads, 112 Watt
6.06
Core i7-9800X
2018
8 cores / 16 threads, 165 Watt
11.39
+88%

Core i7-9800X outperforms Core i7-7740X by an impressive 88% based on our aggregate benchmark results.

Primary details

Comparing Core i7-7740X and Core i7-9800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1101694
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.326.49
Market segmentDesktop processorDesktop processor
SeriesCore i7 (Desktop)Intel Core i7
Power efficiency5.126.53
Architecture codenameKaby Lake-X (2017)Skylake (server) (2017−2018)
Release date26 June 2017 (7 years ago)19 October 2018 (6 years ago)
Launch price (MSRP)$339$589

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-9800X has 180% better value for money than i7-7740X.

Detailed specifications

Core i7-7740X and Core i7-9800X basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)8 (Octa-Core)
Threads816
Base clock speed4.3 GHz3.8 GHz
Boost clock speed4.5 GHz4.5 GHz
Bus typeDMI 3.0DMI 3.0
Bus rate4 × 8 GT/s4 × 8 GT/s
Multiplierno data38
L1 cache64K (per core)64 KB (per core)
L2 cache256K (per core)1 MB (per core)
L3 cache8 MB (shared)16.5 MB (shared)
Chip lithography14 nm14 nm
Maximum core temperature100 °C95 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on Core i7-7740X and Core i7-9800X compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1 (Uniprocessor)1 (Uniprocessor)
SocketFCLGA2066FCLGA2066
Power consumption (TDP)112 Watt165 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7740X and Core i7-9800X. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX++
Turbo Boost Max 3.0no data+

Security technologies

Core i7-7740X and Core i7-9800X technologies aimed at improving security, for example, by protecting against hacks.

EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7740X and Core i7-9800X are enumerated here.

AMD-V+-
VT-d++
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7740X and Core i7-9800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4-2666
Maximum memory size64 GB128 GB
Max memory channels24
Maximum memory bandwidth42.671 GB/s85.33 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardHD 630N/A

Peripherals

Specifications and connection of peripherals supported by Core i7-7740X and Core i7-9800X.

PCIe version3.03.0
PCI Express lanes1644

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i7-7740X 6.06
i7-9800X 11.39
+88%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-7740X 9621
i7-9800X 18088
+88%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-7740X 1655
+18.6%
i7-9800X 1395

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-7740X 5341
i7-9800X 7423
+39%

Gaming performance

Pros & cons summary


Performance score 6.06 11.39
Recency 26 June 2017 19 October 2018
Physical cores 4 8
Threads 8 16
Power consumption (TDP) 112 Watt 165 Watt

i7-7740X has 47.3% lower power consumption.

i7-9800X, on the other hand, has a 88% higher aggregate performance score, an age advantage of 1 year, and 100% more physical cores and 100% more threads.

The Core i7-9800X is our recommended choice as it beats the Core i7-7740X in performance tests.


Should you still have questions on choice between Core i7-7740X and Core i7-9800X, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-7740X
Core i7-7740X
Intel Core i7-9800X
Core i7-9800X

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


2.9 64 votes

Rate Core i7-7740X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.2 81 vote

Rate Core i7-9800X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i7-7740X or Core i7-9800X, agree or disagree with our judgements, or report an error or mismatch.