EPYC 9654 vs i5-8400T

Primary details

Comparing Core i5-8400T and EPYC 9654 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1266	5
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.14	1.30
Market segment	Desktop processor	Server
Series	Intel Core i5	AMD EPYC
Power efficiency	12.69	19.42
Architecture codename	Coffee Lake (2017−2019)	Genoa (2022−2023)
Release date	2 April 2018 (6 years ago)	10 November 2022 (1 year ago)
Launch price (MSRP)	$182	$11,805

Cost-effectiveness evaluation

Performance per price, higher is better.

i5-8400T has 295% better value for money than EPYC 9654.

Detailed specifications

Core i5-8400T and EPYC 9654 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)	96
Threads	6	192
Base clock speed	1.7 GHz	2.4 GHz
Boost clock speed	3.3 GHz	3.7 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	17	24
L1 cache	384 KB	64K (per core)
L2 cache	1.5 MB	1 MB (per core)
L3 cache	9 MB (shared)	384 MB (shared)
Chip lithography	14 nm	5 nm, 6 nm
Die size	149 mm2	12x 72 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	78,840 million
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Core i5-8400T and EPYC 9654 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	FCLGA1151	SP5
Power consumption (TDP)	35 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-8400T and EPYC 9654. 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	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Precision Boost 2	no data	+

Security technologies

Core i5-8400T and EPYC 9654 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-8400T and EPYC 9654 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 i5-8400T and EPYC 9654. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR5-4800
Maximum memory size	128 GB	6 TiB
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	460.8 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 630	no data
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.05 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-8400T and EPYC 9654 integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Core i5-8400T and EPYC 9654 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data

Graphics API support

APIs supported by Core i5-8400T and EPYC 9654 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-8400T and EPYC 9654.

PCIe version	3.0	5.0
PCI Express lanes	16	128

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.

---

Pros & cons summary

---

Performance score	4.87	76.66
Recency	2 April 2018	10 November 2022
Physical cores	6	96
Threads	6	192
Chip lithography	14 nm	5 nm
Power consumption (TDP)	35 Watt	360 Watt

---

Should you still have questions on choice between Core i5-8400T and EPYC 9654, 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.

---