Athlon II X4 638 vs Core 2 Quad Q9500

Primary Details

Comparing Core 2 Quad Q9500 and Athlon II X4 638 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2076	2060
Place by popularity	not in top-100	not in top-100
Cost-Effectiveness Evaluation	4.75	2.05
Market segment	Desktop processor	Desktop processor
Architecture codename	no data	Llano (2011−2012)
Release date	no data	6 February 2012 (12 years ago)
Current price	$46	$27

Cost-Effectiveness Evaluation

Performance per price, higher is better.

Core 2 Quad Q9500 has 132% better value for money than Athlon II X4 638.

Detailed Specifications

Core 2 Quad Q9500 and Athlon II X4 638 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	2.83 GHz	2.7 GHz
Boost clock speed	no data	2.7 GHz
L1 cache	no data	128 KB (per core)
L2 cache	no data	1 MB (per core)
L3 cache	6 MB L2 Cache	0 KB
Chip lithography	45 nm	32 nm
Die size	no data	228 mm2
Maximum core temperature	71 °C	no data
Number of transistors	no data	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q9500 and Athlon II X4 638 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	1
Socket	LGA775	FM1
Power consumption (TDP)	95 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9500 and Athlon II X4 638. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	no data
Demand Based Switching	-	no data
Status	Discontinued	no data

Security technologies

Core 2 Quad Q9500 and Athlon II X4 638 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9500 and Athlon II X4 638 are enumerated here.

AMD-V	no data	+
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9500 and Athlon II X4 638. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR3

Synthetic benchmark performance

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

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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 II X4 638 outperforms Core 2 Quad Q9500 by 1% based on our aggregated benchmark results.

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Pros & Cons Summary

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Performance score	1.44	1.45
Chip lithography	45 nm	32 nm
Power consumption (TDP)	95 Watt	65 Watt

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Should you still have questions on choice between Core 2 Quad Q9500 and Athlon II X4 638, ask them in Comments section, and we shall answer.

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