Intel Celeron 877 vs AMD Athlon X2 QL-66

Price now 5.99$
Games supported 30%
AMD Athlon X2 QL-66
AMD Athlon X2 QL-66
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Intel Celeron 877
Intel Celeron 877
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Price now 528$
Games supported 41%

General info

Comparing Athlon X2 QL-66 and Celeron 877 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance rating26142600
Market segmentLaptopLaptop
Series2x AMD AthlonIntel Celeron
Architecture codenameLion (2008−2009)Sandy Bridge (2011−2013)
Release date1 September 2009 (13 years old)1 December 2011 (11 years old)
Launch price (MSRP)no data$86
Current price$5.99 $528 (6.1x MSRP)

Technical specs

Athlon X2 QL-66 and Celeron 877 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)2 (Dual-core)
Base clock speedno data1.4 GHz
Boost clock speed2.2 GHz1.4 GHz
Bus support3600 MHzno data
L1 cache256 KB64K (per core)
L2 cache1 MB256K (per core)
L3 cacheno data2 MB (shared)
Chip lithography65 nm32 nm
Die sizeno data131 mm2
Maximum core temperature100 °C100 °C
Number of transistorsno data504 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierno data-


Information on Athlon X2 QL-66 and Celeron 877 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 data1
SocketS1g2Intel BGA1023
Thermal design power (TDP)35 Watt17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon X2 QL-66 and Celeron 877. 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 VirtualizationIntel® SSE4.1, Intel® SSE4.2
AES-NIno data-
FMAno data+
PowerNow+no data
Enhanced SpeedStep (EIST)no data+
Enhanced SpeedStep (EIST)no data+
My WiFino data-
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
Idle Statesno data+
Thermal Monitoringno data+
Flex Memory Accessno data+
Demand Based Switchingno data-
FDIno data+
Fast Memory Accessno data+

Security technologies

Athlon X2 QL-66 and Celeron 877 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+
Anti-Theftno data-

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon X2 QL-66 and Celeron 877 are enumerated here.

VT-dno data-
VT-xno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon X2 QL-66 and Celeron 877. Depending on the motherboards, higher memory frequencies may be supported.

Supported memory typesno dataDDR3
Maximum memory sizeno data16 GB
Max memory channelsno data2
Maximum memory bandwidthno data21.3 GB/s
ECC memory supportno data-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel® HD Graphics for 2nd Generation Intel® Processors
Graphics max frequencyno data1 GHz

Graphics interfaces

Available interfaces and connections of Athlon X2 QL-66 and Celeron 877 integrated GPUs.

Number of displays supportedno data2
eDPno data+
DisplayPortno data+
HDMIno data+
SDVOno data+
CRTno data+


Specifications and connection of peripherals supported by Athlon X2 QL-66 and Celeron 877.

PCIe versionno data2.0
PCI Express lanesno data16

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 0.51
Celeron 877 0.53
  • 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
Celeron 877 664

Celeron 877 outperforms Athlon X2 QL-66 by 4% in Passmark.

Gaming performance

Advantages and disadvantages

Performance rating 0.51 0.53
Recency 1 September 2009 1 December 2011
Boost clock speed 2200 1400
Chip lithography 65 nm 32 nm
Thermal design power (TDP) 35 Watt 17 Watt

Technical City couldn't decide between

AMD Athlon X2 QL-66
Athlon X2 QL-66


Intel Celeron 877
Celeron 877

The differences in performance seem too small.

Should you still have questions on choice between Athlon X2 QL-66 and Celeron 877, ask them in Comments section, and we shall answer.

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Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

Competitors of Athlon X2 QL-66 by Intel

We believe that the nearest equivalent to Athlon X2 QL-66 by Intel is Core 2 Duo T5600, which is nearly equal in speed and higher by 6 positions in our rating.

Intel Core 2 Duo T5600 Core 2 Duo T5600

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

Athlon X2 QL-66 100

Competitors of Celeron 877 by AMD

We believe that the nearest equivalent to Celeron 877 by AMD is E2-3000M, which is nearly equal in speed and higher by 10 positions in our rating.

AMD E2-3000M E2 3000M

Here are some closest AMD rivals to Celeron 877:

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.

4.4 16 votes

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4.6 10 votes

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Questions and comments

Here you can ask a question about Athlon X2 QL-66 or Celeron 877, agree or disagree with our judgements, or report an error or mismatch.