Core 2 Quad Q9550 vs Athlon X4 845

Place in the ranking	1773	2158
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Series	no data	Core 2 Quad (Desktop)
Power efficiency	3.48	1.46
Architecture codename	Carrizo (2015−2018)	Yorkfield (2007−2009)
Release date	2 February 2016 (8 years ago)	no data (2024 years ago)

Detailed specifications

Athlon X4 845 and Core 2 Quad (Desktop) Q9550 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)	4 (Quad-Core)
Threads	4	4
Base clock speed	3.5 GHz	no data
Boost clock speed	3.8 GHz	2.83 GHz
Bus rate	no data	1333 MHz
L1 cache	320K	no data
L2 cache	2 MB	12288 KB
Chip lithography	28 nm	45 nm
Die size	250 mm²	no data
Maximum case temperature (TCase)	74 °C	no data
Number of transistors	3,100 million	no data
64 bit support	+	+
Windows 11 compatibility	no data	-
Unlocked multiplier	+	-

Compatibility

Information on Athlon X4 845 and Core 2 Quad (Desktop) Q9550 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	no data
Socket	FM2+	LGA775
Power consumption (TDP)	65 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon X4 845 and Core 2 Quad (Desktop) Q9550. You'll probably need this information if you require some particular technology.

AES-NI	+	-
FMA	+	-
AVX	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon X4 845 and Core 2 Quad (Desktop) Q9550 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon X4 845 and Core 2 Quad (Desktop) Q9550. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3-2133

DDR1,DDR2,DDR3

Peripherals

Specifications and connection of peripherals supported by Athlon X4 845 and Core 2 Quad (Desktop) Q9550.

PCIe version	3.0	no data
PCI Express lanes	8	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.

Athlon X4 845 2.39
+62.6%

Core 2 Quad Q9550 1.47

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.

Athlon X4 845 3797
+62.3%

Core 2 Quad Q9550 2339

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.

Athlon X4 845 662
+78.9%

Core 2 Quad Q9550 370

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.

Athlon X4 845 1630
+57%

Core 2 Quad Q9550 1038