Core i7-3940XM

Details and Benchmarks for Intel Core i7-3940XM

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 i7-3940XM based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,705 Rank: 1098
Rank Name Score Visual
1094 Core i7-3520M 4,712
+0.1%
1095 Core i7-2820QM 4,709
+0.1%
1096 Core i5-5300U 4,708
+0.1%
1097 Xeon D-1559 4,707
+0%
1098 Core i7-3940XM 4,705
1099 Core i5-3340 4,705
+0%
1100 Xeon X5660 4,704
+-0%
1101 Pentium G3450 4,704
+-0%
1102 Core m3-8100Y 4,703
+-0%
1103 Core i7-6500U 4,702
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Core i7-3940XM based on multi-threaded benchmark results.

4,730 Rank: 931
Rank Name Score Visual
927 Core i7-2600S 4,735
+0.1%
928 Core i7-2960XM 4,735
+0.1%
929 Pentium Gold G4620 4,733
+0.1%
930 Intel Core i3-330UM 4,733
+0.1%
931 Core i7-3940XM 4,730
932 Core i5-1030NG7 4,730
+0%
933 Core i5-8265U 4,729
+-0%
934 Xeon X5680 4,727
-0.1%
935 Core i5-7300HQ 4,725
-0.1%
936 Xeon E5-2637 v2 4,725
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Core i7-3940XM based on single-threaded benchmark results.

4,688 Rank: 1154
Rank Name Score Visual
1150 Xeon W3570 4,695
+0.1%
1151 Pentium G3258 4,694
+0.1%
1152 FX-4130 4,692
+0.1%
1153 Core i5-2400S 4,689
+0%
1154 Core i7-3940XM 4,688
1155 Core i5-3320M 4,688
+0%
1156 Xeon E5-2630L v4 4,685
-0.1%
1157 Core i7 940 4,685
-0.1%
1158 Athlon Gold 3150U 4,684
-0.1%
1159 Xeon D-1539 4,681
-0.1%

View full ranking →

Workload Scores

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

Number Crunching

Aggregated score for Core i7-3940XM based on integer math, floating point math, and prime number computation benchmarks.

4,662 Rank: 785
Rank Name Score Visual
781 Core i5-6600K 4,663
+0%
782 Core i7-3770S 4,663
+0%
783 Xeon E3-1225 v6 4,662
+0%
784 Xeon D-1622 4,662
+0%
785 Core i7-3940XM 4,662
786 Xeon E3-1220 v3 4,661
+-0%
787 Xeon E3-1265L v3 4,661
+-0%
788 Xeon E3-1220 v5 4,660
+-0%
789 Xeon E5-1603 v4 4,660
+-0%
790 Core i7-8650U 4,660
+-0%

View full ranking →

Data Processing

Aggregated score for Core i7-3940XM based on data encryption, data compression, and string sorting benchmarks.

4,668 Rank: 757
Rank Name Score Visual
753 Xeon E3-1280 4,670
+0%
754 Core i7-6820HK 4,669
+0%
755 Xeon E3-1505M v5 4,668
+0%
756 Ryzen 3 2200G 4,668
+0%
757 Core i7-3940XM 4,668
758 Ryzen 3 PRO 2200G 4,667
+-0%
759 Ryzen 3 1300X 4,667
+-0%
760 Core i7-7820EQ 4,666
+-0%
761 Core i7-4930MX 4,665
-0.1%
762 Core i7-6770HQ 4,662
-0.1%

View full ranking →

Physics & Compute

Aggregated score for Core i7-3940XM based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,657 Rank: 830
Rank Name Score Visual
826 Core i7-4700HQ 4,658
+0%
827 Core i7-990X 4,658
+0%
828 Core i5-10310U 4,658
+0%
829 Core i3-9100TE 4,658
+0%
830 Core i7-3940XM 4,657
831 Core i5-8250U 4,656
+-0%
832 Core i7-4710HQ 4,656
+-0%
833 Core i7-4702HQ 4,656
+-0%
834 Xeon E5-2420 v2 4,656
+-0%
835 Ryzen 3 1300X 4,654
-0.1%

View full ranking →

Core i7-3940XM Details

As of March 2026, the Intel Core i7-3940XM remains a notable example of high-performance mobile computing from the early 2010s, representing the top tier of Intel's Ivy Bridge architecture for mobile workstations and enthusiast laptops. Designed for the mobile market segment, this processor was launched in September 2012 and is part of Intel’s Core i7 Extreme lineup, built on a 22 nm process and featuring 1.4 billion transistors across a 160 mm² die. While now considered a legacy device, it was engineered to deliver significant performance for demanding applications at the time, particularly in professional and creative environments requiring both raw compute power and integrated graphics.

The Core i7-3940XM is a quad-core processor with eight threads enabled via Intel’s Hyper-Threading technology, operating at a base frequency of 3.0 GHz and capable of boosting up to 3.9 GHz under optimal workloads. It supports dual-channel DDR3 memory with speeds up to 1600 MHz, achieving a maximum memory bandwidth of 25.6 GB/s. The processor uses the FC-PGA12F package and connects via the FCPGA988 socket, supporting up to 32 GB of system memory across two channels. With a TDP of 55 W, it strikes a balance between performance and thermal efficiency, making it suitable for high-end mobile platforms of its era. It also includes a 7.629 MiB L3 cache, complemented by 0.061 MiB of L1 and 0.244 MiB of L2 cache, ensuring efficient data access and low-latency processing.

Integrated into the i7-3940XM is Intel HD 4000 graphics, featuring a base frequency of 650 MHz and a burst frequency of 1.35 GHz, capable of driving up to three displays simultaneously. While not suited for modern gaming, this GPU provided adequate performance for multimedia, office applications, and light creative tasks. The processor supports a range of key technologies, including AVX, AVX2, AES-NI, and Intel VT-x with EPT, enabling robust virtualization and encryption capabilities. It also supports Intel’s vPro platform, enhancing manageability and security in enterprise environments.

In benchmark testing, the Core i7-3940XM achieves an overall score of 4705, placing it at #1098 out of 2060 processors in the overall ranking. Its single-core performance scores 4688, ranking #1154, while its multicore performance reaches 4730, placing it at #931. This indicates that the processor holds a relatively strong position in single-threaded tasks compared to its multicore capabilities, though both are now far behind modern offerings. It performs slightly better than some contemporary CPUs like the Core i5-8265U and Xeon X5680 but trails behind newer chips such as the Core i7-2820QM and Core i7-3520M. Among the top 50 overall performers, it is outpaced by leading processors like the Ryzen Threadripper PRO 9995WX and Core Ultra 9 285K, which exceed its score by over 4,000 points.

In conclusion, the Intel Core i7-3940XM is a capable mobile processor for its time, offering high clock speeds, strong integrated graphics, and support for advanced technologies. While now obsolete in the face of modern multi-core, high-efficiency designs, it remains relevant for legacy systems, retro computing, or specialized environments where its unique combination of performance and features is still valuable. Its placement in the mid-tier of historical benchmarks reflects its role as a premium mobile CPU during the transition from Sandy Bridge to Ivy Bridge, bridging the gap between desktop and laptop performance.
Frequently Compared

AMD Ryzen 9 3900X 3 views

AMD Ryzen 9 PRO 3900 2 views

AMD Ryzen 3 PRO 2200GE 1 view

AMD Ryzen 5 PRO 3500U 1 view

Intel Xeon Silver 4214 1 view

Intel Xeon Silver 4210 1 view

Intel Xeon Silver 4110 1 view

Intel Core i7-3940XM

Main Specifications

Designer: Intel
Name: Core i7-3940XM
Model Number: i7-3940XM
Cores: 4
Threads: 8
Base Frequency: 3000 MHz
Clock Multiplier: 30x (unlocked)
Core Name: Ivy Bridge
Socket: FCPGA988
Package: FC-PGA12F
Target Segment: Mobile
Max CPUs: 1
TDP: 55 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.244 MiB
L3 Cache: 7.629 MiB

Memory Specifications

Supported Memory Type: DDR3/L/-RS 1333/1600
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 25.6 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8 2x4

Integrated Graphics

GPU: HD Graphics 4000
GPU Designer: Intel
GPU Max Frequency: 1350 MHz

Physical Specifications

Process: 22 nm
Die Area: 160 mm²
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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