CPU Performance Comparison

Performance of selected CPUs can be found below. The values for the CPU are determined from thousands of PerformanceTest benchmark results and is updated daily.

	AMD Phenom 9550 Quad-Core	Intel Core2 Quad Q8400 @ 2.66GHz
Price	$28.99¹	$239.95¹
Socket Type	AM2+	LGA775
CPU Class	Desktop	Desktop
Clockspeed	2.2 GHz	2.7 GHz
Turbo Speed	Not Supported	Not Supported
# of Physical Cores	4	4
Max TDP	95W	95W
Yearly Running Cost	$17.34	$17.34
First Seen on Chart	Q4 2008	Q2 2009
# of Samples	452	1343
Single Thread Rating	760	1120
CPU Mark	2543	3161

¹ - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 18th of August 2019 - Higher results represent better performance
AMD Phenom 9550 Quad-Core	2,543
Intel Core2 Quad Q8400 @ 2.66GHz	3,161
Intel Core i9-9900K @ 3.60GHz	20,223
AMD Ryzen 7 2700X	16,961
Intel Core i7-8700K @ 3.70GHz	15,963
Intel Core i7-8700 @ 3.20GHz	15,158
AMD Ryzen 7 1700X	14,681
PassMark Software © 2008-2019

CPU Value (CPU Mark / $Price)
As of 18th of August 2019 - Higher results represent better value
AMD Phenom 9550 Quad-Core	87.73
Intel Core2 Quad Q8400 @ 2.66GHz	13.18
Intel Core i9-9900K @ 3.60GHz	42.22
AMD Ryzen 7 2700X	67.88
Intel Core i7-8700K @ 3.70GHz	45.61
Intel Core i7-8700 @ 3.20GHz	44.85
AMD Ryzen 7 1700X	89.55
PassMark Software © 2008-2019

CPU Single Thread Rating
As of 18th of August 2019 - Higher results represent better performance
AMD Phenom 9550 Quad-Core	760
Intel Core2 Quad Q8400 @ 2.66GHz	1,120
Intel Core i9-9900K @ 3.60GHz	2,898
AMD Ryzen 7 2700X	2,190
Intel Core i7-8700K @ 3.70GHz	2,701
Intel Core i7-8700 @ 3.20GHz	2,630
AMD Ryzen 7 1700X	1,881
PassMark Software © 2008-2019

Show other common CPUs in charts

Estimated Energy Usage Cost

Estimated Energy Adjustable Values
Average hours of use per day
Average CPU Utilization (0-100%)¹
Power cost, $ per kWh²

¹Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
²Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.

	AMD Phenom 9550 Quad-Core	Intel Core2 Quad Q8400 @ 2.66GHz
Max TDP	95W	95W
Power consumption per day (kWh)	abc	abc
Running cost per day	abc	abc
Power consumption per year (kWh)	abc	abc
Running cost per year	abc	abc

Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.

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