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.

	Intel Core2 Quad Q8400 @ 2.66GHz	AMD Phenom II X4 945
Price	$239.95¹	$68.11 BUY NOW!
Socket Type	LGA775	AM3
CPU Class	Desktop	Desktop
Clockspeed	2.7 GHz	3.0 GHz
Turbo Speed	Not Supported	Not Supported
# of Physical Cores	4	4
Max TDP	95W	125W
Yearly Running Cost	$17.34	$22.81
First Seen on Chart	Q2 2009	Q2 2009
# of Samples	1320	1399
Single Thread Rating	1121	1037
CPU Mark	3163	3655

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

CPU Mark Rating
As of 21st of May 2019 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz	3,163
AMD Phenom II X4 945	3,655
Intel Core i9-9900K @ 3.60GHz	20,206
AMD Ryzen 7 2700X	16,984
Intel Core i7-8700K @ 3.70GHz	15,962
Intel Core i7-8700 @ 3.20GHz	15,147
AMD Ryzen 7 1700	13,769
PassMark Software © 2008-2019

CPU Value (CPU Mark / $Price)
As of 21st of May 2019 - Higher results represent better value
Intel Core2 Quad Q8400 @ 2.66GHz	13.18
AMD Phenom II X4 945	53.67
Intel Core i9-9900K @ 3.60GHz	41.66
AMD Ryzen 7 2700X	59.81
Intel Core i7-8700K @ 3.70GHz	42.01
Intel Core i7-8700 @ 3.20GHz	50.49
AMD Ryzen 7 1700	79.93
PassMark Software © 2008-2019

CPU Single Thread Rating
As of 21st of May 2019 - Higher results represent better performance
Intel Core2 Quad Q8400 @ 2.66GHz	1,121
AMD Phenom II X4 945	1,037
Intel Core i9-9900K @ 3.60GHz	2,900
AMD Ryzen 7 2700X	2,192
Intel Core i7-8700K @ 3.70GHz	2,702
Intel Core i7-8700 @ 3.20GHz	2,630
AMD Ryzen 7 1700	1,775
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.

	Intel Core2 Quad Q8400 @ 2.66GHz	AMD Phenom II X4 945
Max TDP	95W	125W
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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