Ryzen 5 PRO 8640U vs i7-3960X

Primary details

Comparing Core i7-3960X and Ryzen 5 PRO 8640U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1166	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.40	no data
Market segment	Desktop processor	Server
Series	Core i7 (Desktop)	no data
Power efficiency	3.87	no data
Architecture codename	Sandy Bridge-E (2011−2013)	Hawk Point (2024)
Release date	14 November 2011 (12 years ago)	16 April 2024 (less than a year ago)
Launch price (MSRP)	$861	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-3960X and Ryzen 5 PRO 8640U 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	6 (Hexa-Core)	6 (Hexa-Core)
Threads	12	12
Base clock speed	3.3 GHz	3.5 GHz
Boost clock speed	3.9 GHz	4.9 GHz
Bus rate	5 GT/s	no data
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	1 MB (per core)
L3 cache	15 MB (shared)	16 MB (shared)
Chip lithography	32 nm	4 nm
Die size	435 mm2	178 mm2
Maximum case temperature (TCase)	67 °C	no data
Number of transistors	2,270 million	25,000 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i7-3960X and Ryzen 5 PRO 8640U 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	FCLGA2011	FP7
Power consumption (TDP)	130 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3960X and Ryzen 5 PRO 8640U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX	no data
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Smart Response	+	no data
Demand Based Switching	-	no data
Precision Boost 2	no data	+

Security technologies

Core i7-3960X and Ryzen 5 PRO 8640U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Identity Protection	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3960X and Ryzen 5 PRO 8640U 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 i7-3960X and Ryzen 5 PRO 8640U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5
Maximum memory size	64 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	51.2 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by Core i7-3960X and Ryzen 5 PRO 8640U.

PCIe version	2.0	4.0
PCI Express lanes	40	20

Pros & cons summary

---

Recency	14 November 2011	16 April 2024
Chip lithography	32 nm	4 nm
Power consumption (TDP)	130 Watt	28 Watt

---

Should you still have questions on choice between Core i7-3960X and Ryzen 5 PRO 8640U, 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.

---