Ryzen 9 6900HX vs Xeon D-1521

Primary details

Comparing Xeon D-1521 and Ryzen 9 6900HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1502	436
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.46	no data
Market segment	Server	Laptop
Series	Intel Xeon D	AMD Rembrandt (Zen 3+)
Power efficiency	7.54	32.79
Architecture codename	Broadwell (2015−2019)	Rembrandt-H (Zen 3+) (2022)
Release date	1 November 2015 (9 years ago)	January 2022 (2 years ago)
Launch price (MSRP)	$199	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon D-1521 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	4 (Quad-Core)	8 (Octa-Core)
Threads	8	16
Base clock speed	2.4 GHz	3.3 GHz
Boost clock speed	2.7 GHz	4.9 GHz
Bus type	DMI 2.0	no data
Multiplier	24	no data
L1 cache	256 KB	64K (per core)
L2 cache	1 MB	512K (per core)
L3 cache	6 MB	16 MB (shared)
Chip lithography	14 nm	6 nm
Die size	246.24 mm2	208 mm2
Maximum core temperature	no data	95 °C
Maximum case temperature (TCase)	80 °C	no data
Number of transistors	3200 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Xeon D-1521 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 (Uniprocessor)	1
Socket	FCBGA1667	FP7
Power consumption (TDP)	45 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon D-1521 and Ryzen 9 6900HX. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
GPIO	+	no data
Precision Boost 2	no data	+

Security technologies

Xeon D-1521 and Ryzen 9 6900HX technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon D-1521 and Ryzen 9 6900HX 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 Xeon D-1521 and Ryzen 9 6900HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR3	DDR5
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	34.124 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon 680M

Peripherals

Specifications and connection of peripherals supported by Xeon D-1521 and Ryzen 9 6900HX.

PCIe version	2.0/3.0	4.0
PCI Express lanes	24	20
USB revision	2.0/3.0	no data
Total number of SATA ports	6	no data
Number of USB ports	8	no data
Integrated LAN	+	no data
UART	+	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.

---

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	3.72	16.18
Physical cores	4	8
Threads	8	16
Chip lithography	14 nm	6 nm

---

Should you still have questions on choice between Xeon D-1521 and Ryzen 9 6900HX, 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.

---