Ryzen 9 6900HX vs Athlon 64 FX-55

Primary details

Comparing Athlon 64 FX-55 and Ryzen 9 6900HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3163	448
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	no data	AMD Rembrandt (Zen 3+)
Power efficiency	0.23	32.70
Architecture codename	Clawhammer (2001−2005)	Rembrandt-H (Zen 3+) (2022)
Release date	10 October 2004 (20 years ago)	January 2022 (2 years ago)
Launch price (MSRP)	$180	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Athlon 64 FX-55 and Ryzen 9 6900HX 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	1 (Single-Core)	8 (Octa-Core)
Threads	1	16
Base clock speed	2.6 GHz	3.3 GHz
Boost clock speed	2.6 GHz	4.9 GHz
L1 cache	128 KB	64K (per core)
L2 cache	1 MB	512K (per core)
L3 cache	0 KB	16 MB (shared)
Chip lithography	130 nm	6 nm
Die size	193 mm2	208 mm2
Maximum core temperature	no data	95 °C
Maximum case temperature (TCase)	63 °C	no data
Number of transistors	105 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	+

Compatibility

Information on Athlon 64 FX-55 and Ryzen 9 6900HX 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	939	FP7
Power consumption (TDP)	104 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon 64 FX-55 and Ryzen 9 6900HX. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA
AES-NI	-	+
AVX	-	+
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon 64 FX-55 and Ryzen 9 6900HX are enumerated here.

AMD-V

-

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon 64 FX-55 and Ryzen 9 6900HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1 Depends on motherboard

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

AMD Radeon 680M ( - 2400 MHz)

Peripherals

Specifications and connection of peripherals supported by Athlon 64 FX-55 and Ryzen 9 6900HX.

PCIe version	no data	4.0
PCI Express lanes	no data	20

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	0.25	15.55
Physical cores	1	8
Threads	1	16
Chip lithography	130 nm	6 nm
Power consumption (TDP)	104 Watt	45 Watt

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Should you still have questions on choice between Athlon 64 FX-55 and Ryzen 9 6900HX, ask them in Comments section, and we shall answer.

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