EPYC 9555 vs i7-820QM

Primary details

Comparing Core i7-820QM and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2394	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	Intel Core i7	no data
Power efficiency	2.36	no data
Architecture codename	Clarksfield (2009−2010)	Turin (2024)
Release date	23 September 2009 (15 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$546	$9,826

Detailed specifications

Core i7-820QM and EPYC 9555 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)	64 (Tetrahexaconta-Core)
Threads	8	128
Base clock speed	1.73 GHz	3.2 GHz
Boost clock speed	3.06 GHz	4.4 GHz
Bus type	DMI 1.0	no data
Bus rate	2.5 GT/s	no data
Multiplier	13	no data
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	256 KB (per core)	1 MB (per core)
L3 cache	8 MB (shared)	256 MB (shared)
Chip lithography	45 nm	4 nm
Die size	296 mm2	8x 70.6 mm2
Maximum core temperature	100 °C	no data
Number of transistors	774 million	66,520 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Core i7-820QM and EPYC 9555 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 (Uniprocessor)	2
Socket	FCPGA988,PGA988	SP5
Power consumption (TDP)	45 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-820QM and EPYC 9555. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
AES-NI	-	+
AVX	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
PAE	36 Bit	no data
Precision Boost 2	no data	+

Security technologies

Core i7-820QM and EPYC 9555 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-820QM and EPYC 9555 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 i7-820QM and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1066, DDR3-1333	DDR5
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

None

N/A

Peripherals

Specifications and connection of peripherals supported by Core i7-820QM and EPYC 9555.

PCIe version	2	5.0
PCI Express lanes	16	128

Pros & cons summary

---

Recency	23 September 2009	10 October 2024
Physical cores	4	64
Threads	8	128
Chip lithography	45 nm	4 nm
Power consumption (TDP)	45 Watt	360 Watt

---

Should you still have questions on choice between Core i7-820QM and EPYC 9555, 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.

---