AMD EPYC 7H12 vs Athlon X2 QL-66

Price now 5.99$
Games supported 27%
AMD Athlon X2 QL-66
AMD Athlon X2 QL-66
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Price now 4165$
Games supported 100%

General info

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

Place in performance rating26512
Place by popularityno data29
Value for moneyno data11.74
Market segmentLaptopServer
Series2x AMD AthlonAMD EPYC
Architecture codenameLion (2008−2009)Zen 2 (2019−2020)
Release date1 September 2009
(13 years old)
18 September 2019
(3 years old)
Current price$5.99 $4165
Value for money

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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Technical specs

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 cores2 (Dual-core)64 (Tetrahexaconta-Core)
Base clock speedno data2.6 GHz
Boost clock speed2.2 GHz3.3 GHz
Bus support3600 MHzno data
L1 cache256 KB96K (per core)
L2 cache1 MB512K (per core)
L3 cacheno data256 MB (shared)
Chip lithography65 nm7 nm, 14 nm
Die sizeno data192 mm2
Maximum core temperature100 °Cno data
Number of transistorsno data4,800 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplierno data+


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 configurationno data2 (Multiprocessor)
Thermal design power (TDP)35 Watt280 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 extensionsMMX, SSE, SSE2, SSE3, Enhanced 3DNow!, NX bit, AMD64, PowerNow!, AMD Virtualizationno data
AES-NIno data+
AVXno data+
PowerNow+no data

Virtualization technologies

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

AMD-Vno data+

Memory specs

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

Supported memory typesno dataDDR4 Eight-channel
Maximum memory sizeno data4 TiB
Max memory channelsno data8
Maximum memory bandwidthno data204.763 GB/s
ECC memory supportno data+

Benchmark performance

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

Overall 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.

Athlon X2 QL-66 0.52
EPYC 7H12 81.23
  • Passmark


Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 67%

Athlon X2 QL-66 641
EPYC 7H12 100817

EPYC 7H12 outperforms Athlon X2 QL-66 by 15628% in Passmark.

Gaming performance

Advantages and disadvantages

Performance rating 0.52 81.23
Recency 1 September 2009 18 September 2019
Boost clock speed 2200 3300
Base clock speed 0 2600
Chip lithography 65 nm 7 nm
Thermal design power (TDP) 35 Watt 280 Watt

Judging by the results of synthetic and gaming tests, Technical City recommends


Be aware that Athlon X2 QL-66 is a notebook processor while EPYC 7H12 is a server/workstation one.

Should you still have questions on choice between Athlon X2 QL-66 and EPYC 7H12, ask them in Comments section, and we shall answer.

Cast your vote

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Competitors of Athlon X2 QL-66 by Intel

We believe that the nearest equivalent to Athlon X2 QL-66 by Intel is Pentium T3400, which is nearly equal in speed and higher by 7 positions in our rating.

Intel Pentium T3400 Pentium T3400

Here are some closest Intel rivals to Athlon X2 QL-66:

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

User rating

Here you can see how users rate the processors, as well as rate them yourself.

4.7 11 ratings

Rate AMD Athlon X2 QL-66 on a scale of 1 to 5:

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3.7 433 ratings

Rate AMD EPYC 7H12 on a scale of 1 to 5:

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Questions and comments

Here you can ask a question about Athlon X2 QL-66 or EPYC 7H12, agree or disagree with our judgements, or report an error or mismatch.