FX-8100 vs i7-4940MX

Place in the ranking	1355	1733
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Power efficiency	7.14	2.54
Architecture codename	Haswell (2013−2015)	Zambezi (2011−2012)
Release date	20 January 2014 (10 years ago)	12 October 2011 (13 years ago)
Launch price (MSRP)	$1,096	no data

Detailed specifications

Core i7-4940MX and FX-8100 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 cores	4 (Quad-Core)	8 (Octa-Core)
Threads	8	8
Base clock speed	3.1 GHz	2.8 GHz
Boost clock speed	4 GHz	3.7 GHz
Bus rate	5 GT/s	no data
L1 cache	64K (per core)	384 KB
L2 cache	256K (per core)	8 MB
L3 cache	8 MB (shared)	8 MB (shared)
Chip lithography	22 nm	32 nm
Die size	177 mm²	315 mm²
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	100 °C	no data
Number of transistors	1,400 million	1,200 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	+

Compatibility

Information on Core i7-4940MX and FX-8100 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 configuration	1	1
Socket	FCPGA946	AM3+
Power consumption (TDP)	57 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-4940MX and FX-8100. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
FMA	-	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
FDI	+	no data

Security technologies

Core i7-4940MX and FX-8100 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
Identity Protection	+	-
Anti-Theft	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-4940MX and FX-8100 are enumerated here.

AMD-V	+	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-4940MX and FX-8100. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 4600	no data
Max video memory	1.7 GB	no data
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.35 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-4940MX and FX-8100 integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
VGA	+	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-4940MX and FX-8100.

PCIe version	3	2.0
PCI Express lanes	16	no data

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.

i7-4940MX 4.38
+68.5%

FX-8100 2.60

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.

i7-4940MX 6830
+68.4%

FX-8100 4055

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.

i7-4940MX 1237
+201%

FX-8100 411

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.

i7-4940MX 4001
+120%

FX-8100 1819

Gaming performance

Pros & cons summary

Performance score	4.38	2.60
Recency	20 January 2014	12 October 2011
Physical cores	4	8
Chip lithography	22 nm	32 nm
Power consumption (TDP)	57 Watt	95 Watt

i7-4940MX has a 68.5% higher aggregate performance score, an age advantage of 2 years, a 45.5% more advanced lithography process, and 66.7% lower power consumption.

FX-8100, on the other hand, has 100% more physical cores.

The Core i7-4940MX is our recommended choice as it beats the FX-8100 in performance tests.

Be aware that Core i7-4940MX is a notebook processor while FX-8100 is a desktop one.

Should you still have questions on choice between Core i7-4940MX and FX-8100, ask them in Comments section, and we shall answer.