EPYC 7H12 vs Athlon X2 QL-66

Primary details

Comparing Athlon X2 QL-66 and EPYC 7H12 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	47
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	2x AMD Athlon	AMD EPYC
Power efficiency	no data	14.82
Architecture codename	Lion (2008−2009)	Zen 2 (2017−2020)
Release date	1 September 2009 (15 years ago)	18 September 2019 (5 years ago)

Detailed specifications

Athlon X2 QL-66 and EPYC 7H12 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	2 (Dual-core)	64 (Tetrahexaconta-Core)
Threads	2	128
Base clock speed	no data	2.6 GHz
Boost clock speed	2.2 GHz	3.3 GHz
Bus rate	3600 MHz	no data
Multiplier	no data	26
L1 cache	256 KB	96K (per core)
L2 cache	1 MB	512K (per core)
L3 cache	no data	256 MB (shared)
Chip lithography	65 nm	7 nm, 14 nm
Die size	no data	192 mm2
Maximum core temperature	100 °C	no data
Number of transistors	no data	4,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Athlon X2 QL-66 and EPYC 7H12 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	no data	2 (Multiprocessor)
Socket	S1g2	TR4
Power consumption (TDP)	35 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon X2 QL-66 and EPYC 7H12. You'll probably need this information if you require some particular technology.

Instruction set extensions	MMX, SSE, SSE2, SSE3, Enhanced 3DNow!, NX bit, AMD64, PowerNow!, AMD Virtualization	no data
AES-NI	-	+
AVX	-	+
PowerNow	+	-
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon X2 QL-66 and EPYC 7H12 are enumerated here.

AMD-V

-

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon X2 QL-66 and EPYC 7H12. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR4 Eight-channel
Maximum memory size	no data	4 TiB
Max memory channels	no data	8
Maximum memory bandwidth	no data	204.763 GB/s
ECC memory support	-	+

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

---

Pros & cons summary

---

Recency	1 September 2009	18 September 2019
Physical cores	2	64
Threads	2	128
Chip lithography	65 nm	7 nm
Power consumption (TDP)	35 Watt	280 Watt

---

Should you still have questions on choice between Athlon X2 QL-66 and EPYC 7H12, 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.

---