Core i7-7740X

Details and Benchmarks for Intel Core i7-7740X

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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 i7-7740X based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

5,522 Rank: 467
Rank Name Score Visual
463 Xeon Gold 6152 5,524
+0%
464 Core i7-7700 5,524
+0%
465 Ryzen 3 5425U 5,524
+0%
466 Xeon Gold 6136 5,523
+0%
467 Core i7-7740X 5,522
468 Xeon E5-1650 0 5,522
+0%
469 Ryzen 7 2800H 5,521
+-0%
470 Xeon Gold 6132 5,517
-0.1%
471 Core i5-10400H 5,515
-0.1%
472 FX-9370 5,511
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Core i7-7740X based on multi-threaded benchmark results.

4,874 Rank: 761
Rank Name Score Visual
757 Core i5-4690K 4,877
+0.1%
758 Xeon E5-1620 v2 4,877
+0.1%
759 Core i5-4690 4,876
+0%
760 Ryzen 5 PRO 3500U 4,875
+0%
761 Core i7-7740X 4,874
762 Core i7-3840QM 4,874
+0%
763 Core i7-1185GRE 4,874
+0%
764 Ryzen 7 3750H 4,871
-0.1%
765 Xeon E5-2643 v2 4,871
-0.1%
766 Ryzen 3 5300U 4,871
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Core i7-7740X based on single-threaded benchmark results.

5,954 Rank: 291
Rank Name Score Visual
287 Ryzen 3 PRO 5475U 5,957
+0.1%
288 Ryzen 7 5800H 5,956
+0%
289 Ryzen 7 PRO 7730U 5,956
+0%
290 Ryzen 7 7735U 5,955
+0%
291 Core i7-7740X 5,954
292 Ryzen 3 3300X 5,951
-0.1%
293 Core i7 880 5,948
-0.1%
294 Ryzen 7 PRO 5875U 5,948
-0.1%
295 Core i5-7600K 5,947
-0.1%
296 Xeon E3-1285 v6 5,939
-0.3%

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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 i7-7740X based on integer math, floating point math, and prime number computation benchmarks.

4,749 Rank: 581
Rank Name Score Visual
577 Xeon E3-1285 v4 4,755
+0.1%
578 Core i5-1145G7 4,754
+0.1%
579 Xeon E-2234 4,752
+0.1%
580 Core i7-5775C 4,751
+0%
581 Core i7-7740X 4,749
582 Core i7-3970X 4,749
+0%
583 Xeon E-2244G 4,748
+-0%
584 Xeon E-2174G 4,747
+-0%
585 Core i7-7700K 4,747
+-0%
586 Core i5-8500B 4,746
-0.1%

View full ranking →

Data Processing

Aggregated score for Core i7-7740X based on data encryption, data compression, and string sorting benchmarks.

4,779 Rank: 573
Rank Name Score Visual
569 Core i5-9600 4,789
+0.2%
570 Ryzen 7 3750H 4,781
+0%
571 Ryzen 3 7320U 4,781
+0%
572 Core i5-8600K 4,780
+0%
573 Core i7-7740X 4,779
574 Core i7-7700K 4,779
+0%
575 Xeon E-2126G 4,776
-0.1%
576 Core i5-8600 4,776
-0.1%
577 Core i5-9500F 4,775
-0.1%
578 Xeon W-2125 4,775
-0.1%

View full ranking →

Physics & Compute

Aggregated score for Core i7-7740X based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,826 Rank: 538
Rank Name Score Visual
534 Ryzen 7 PRO 1700 4,831
+0.1%
535 Core i7-9750H 4,829
+0.1%
536 Core i7-8559U 4,828
+0%
537 Xeon E3-1545M v5 4,828
+0%
538 Core i7-7740X 4,826
539 Xeon E-2174G 4,826
+0%
540 Core i9-8950HK 4,825
+-0%
541 Ryzen 3 PRO 5350GE 4,825
+-0%
542 Xeon E-2144G 4,824
+-0%
543 Core i7-7700K 4,822
-0.1%

View full ranking →

Core i7-7740X Details

The Intel Core i7-7740X is designed for enthusiasts and desktop users who demand high single-core performance without the need for integrated graphics. Launched in June 2017, this processor is part of Intel’s X-Series lineup, built on the Kaby Lake microarchitecture and fabricated on a 14 nm process. Despite its age, the i7-7740X remains relevant for applications where raw single-threaded speed is more critical than modern multi-core scalability. It is particularly suited for content creation, gaming, and overclocking due to its unlocked multiplier and high clock speeds.

The Core i7-7740X features four cores and eight threads, enabled by Intel’s Hyper-Threading technology, allowing it to handle demanding multitasking workloads efficiently. It operates at a base frequency of 4.3 GHz, with a turbo frequency reaching up to 4.5 GHz across all four cores. This high clock speed is supported by 8 MB of L3 cache and 1 MiB of L2 cache, with 0.125 MiB of L1 cache per core. The processor uses a quad-channel DDR4-2666 memory interface, delivering a maximum memory bandwidth of 39.74 GiB/s, and supports up to 64 GB of RAM. It is built for the FCLGA-2066 socket, also known as Socket R4, and includes support for PCIe 3.0 with 16 lanes.

Notably, the i7-7740X does not include integrated graphics, requiring a discrete GPU for display output. However, it supports a range of advanced features, including Intel Turbo Boost 2.0, Enhanced SpeedStep Technology, and hardware virtualization via Intel VT-x and VT-d. It also includes support for AVX, AVX2, AES-NI, and other instruction sets that enhance performance in encryption, multimedia, and scientific computing. The processor has a TDP of 112 W, which necessitates a robust cooling solution, especially under sustained loads or during overclocking.

In benchmark testing, the Core i7-7740X achieves an overall score of 5522, placing it at #467 of 2060 processors. Its single-core score of 5954 ranks it #291, showcasing its strong performance in applications that rely heavily on individual core speed. In contrast, its multicore score of 4874 places it at #761, indicating that while it performs well in multi-threaded tasks, it is outpaced by modern high-core-count processors. The processor is competitive with older mainstream CPUs like the Core i5-6600 and Ryzen 3 5300U, but trails behind modern high-end offerings.

As of March 2026, the Core i7-7740X occupies a niche position in the market—ideal for users upgrading older systems or building cost-effective, high-frequency desktops for gaming or productivity. While it lacks the efficiency and multi-core performance of modern CPUs, its strong single-core capabilities and overclocking potential make it a compelling choice for enthusiasts willing to trade modern features for raw clock speed.
Frequently Compared

Intel Xeon E-2286M 30 views

AMD Ryzen 3 PRO 2200GE 28 views

AMD Ryzen Threadripper 3970X 28 views

AMD Ryzen 9 PRO 3900 27 views

AMD Ryzen 5 PRO 3500U 27 views

AMD EPYC 7452 26 views

AMD Ryzen Embedded R1505G 26 views

AMD EPYC 7302P 25 views

Intel Core i7-9850H 24 views

Intel Core i7-8559U 24 views

Intel Core i7-7740X

Main Specifications

Designer: Intel
Name: Core i7-7740X
Family: Core
Series: i7-7700
Model Number: i7-7740X
Cores: 4
Threads: 8
Base Frequency: 4300 MHz
Turbo Frequency (1 core): 4500 MHz
Turbo Frequency (2 cores): 4500 MHz
Turbo Frequency (3 cores): 4500 MHz
Turbo Frequency (4 cores): 4500 MHz
Clock Multiplier: 43x (unlocked)
Microarchitecture: Kaby Lake
Core Name: Kaby Lake X
Core Family: 6
Core Model: 158
Socket: Socket
Package: FCLGA-2066
Chipset: Lewisburg
Target Segment: Desktop
Max CPUs: 1
TDP: 112 W
Release Price: $339.00

Cache Specifications

L1 Cache: 256 KiB
L1 Instruction Cache: 128 KiB (8-way set associative)
L1 Data Cache: 128 KiB (8-way set associative)
L2 Cache: 1 MiB (4-way set associative)
L3 Cache: 8 MiB

Memory Specifications

Supported Memory Type: DDR4-2666
Memory Channels: 2
Maximum Memory: 64 GB
Maximum Bandwidth: 39.74 GB/s
ECC Support: No

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 TXT VT-x VT-d EPT MPX SGX TSX TBT 1.0
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