Athlon II X4 645 vs Core 2 Quad Q9550

VS

Aggregate performance score

Core 2 Quad Q9550
2008
4 cores / 4 threads, 95 Watt
1.47
Athlon II X4 645
2010
4 cores / 4 threads, 95 Watt
1.48
+0.7%

Athlon II X4 645 outperforms Core 2 Quad Q9550 by a minimal 1% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Quad (Desktop) Q9550 and Athlon II X4 645 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking21702167
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data3.30
Market segmentDesktop processorDesktop processor
SeriesCore 2 Quad (Desktop)no data
Power efficiency1.461.47
Architecture codenameYorkfield (2007−2009)Propus (2009−2011)
Release dateno data21 September 2010 (14 years ago)
Launch price (MSRP)no data$80

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core 2 Quad (Desktop) Q9550 and Athlon II X4 645 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 cores4 (Quad-Core)4 (Quad-Core)
Threads44
Base clock speedno data3.1 GHz
Boost clock speed2.83 GHz3.1 GHz
Bus rate1333 MHzno data
L1 cache64K (per core)128 KB (per core)
L2 cache12288 KB512 KB (per core)
L3 cache0 KB0 KB
Chip lithography45 nm45 nm
Die size2x 107 mm2169 mm2
Maximum case temperature (TCase)71 °Cno data
Number of transistors820 million300 million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Core 2 Quad (Desktop) Q9550 and Athlon II X4 645 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 configuration11
SocketLGA775AM3
Power consumption (TDP)95 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad (Desktop) Q9550 and Athlon II X4 645. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad (Desktop) Q9550 and Athlon II X4 645. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1,DDR2,DDR3DDR3

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad (Desktop) Q9550 and Athlon II X4 645.

PCIe versionno data2.0

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.

Core 2 Quad Q9550 1.47
Athlon II X4 645 1.48
+0.7%

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.

Core 2 Quad Q9550 2338
Athlon II X4 645 2351
+0.6%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Quad Q9550 370
+15.6%
Athlon II X4 645 320

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Quad Q9550 1038
+7.1%
Athlon II X4 645 969

Gaming performance

Pros & cons summary


Performance score 1.47 1.48

Athlon II X4 645 has a 0.7% higher aggregate performance score.

Given the minimal performance differences, no clear winner can be declared between Core 2 Quad Q9550 and Athlon II X4 645.


Should you still have questions on choice between Core 2 Quad Q9550 and Athlon II X4 645, ask them in Comments section, and we shall answer.

Vote for your favorite

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Intel Core 2 Quad Q9550
Core 2 Quad Q9550
AMD Athlon II X4 645
Athlon II X4 645

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Community ratings

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


4.1 1876 votes

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Questions & comments

Here you can ask a question about Core 2 Quad Q9550 or Athlon II X4 645, agree or disagree with our judgements, or report an error or mismatch.