Ryzen 9 8945H vs Ryzen Threadripper 3990X

Primary details

Comparing Ryzen Threadripper 3990X and Ryzen 9 8945H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	33	306
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	9.53	no data
Market segment	Desktop processor	Laptop
Series	AMD Ryzen Threadripper	AMD Hawk Point (Zen 4/4c, Ryzen 8040)
Power efficiency	17.00	39.84
Architecture codename	Matisse (2019−2020)	Hawk Point-HS (Zen 4) (2023−2024)
Release date	7 February 2020 (4 years ago)	6 December 2023 (less than a year ago)
Launch price (MSRP)	$3,999	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen Threadripper 3990X and Ryzen 9 8945H 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	64 (Tetrahexaconta-Core)	8 (Octa-Core)
Threads	128	16
Base clock speed	2.9 GHz	4 GHz
Boost clock speed	4.3 GHz	5.2 GHz
Multiplier	29	no data
L1 cache	96K (per core)	512 KB
L2 cache	512K (per core)	8 MB
L3 cache	256 MB	16 MB
Chip lithography	7 nm, 12 nm	4 nm
Die size	74 mm2	178 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	95 °C	no data
Number of transistors	3,800 million	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Ryzen Threadripper 3990X and Ryzen 9 8945H 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	no data
Socket	TR4	FP7/FP7r2/FP8
Power consumption (TDP)	280 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen Threadripper 3990X and Ryzen 9 8945H. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Ryzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	-	+
AVX	+	+
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen Threadripper 3990X and Ryzen 9 8945H are enumerated here.

AMD-V

+

-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen Threadripper 3990X and Ryzen 9 8945H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5
Maximum memory size	256 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	102.403 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

-

AMD Radeon 780M

Peripherals

Specifications and connection of peripherals supported by Ryzen Threadripper 3990X and Ryzen 9 8945H.

PCIe version

4.0

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.

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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.

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Pros & cons summary

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Performance score	52.20	19.66
Recency	7 February 2020	6 December 2023
Physical cores	64	8
Threads	128	16
Chip lithography	7 nm	4 nm
Power consumption (TDP)	280 Watt	45 Watt

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Should you still have questions on choice between Ryzen Threadripper 3990X and Ryzen 9 8945H, ask them in Comments section, and we shall answer.

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