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Intel i5-661 vs AMD Phenom II X4 850

The AMD Phenom II X4 850 is newer than Intel Core i5-661 @ 3.33GHz however both CPUs have comparable multi-threaded (CPU Mark) and single-thread rating. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 331 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Core i5-661 @ 3.33GHz×AMD Phenom II X4 850+ ADD
Price Search Online Search Online
Socket TypeLGA1156AM2+/AM3
CPU ClassDesktopDesktop
Clockspeed3.3 GHz3.3 GHz
Turbo SpeedUp to 3.6 GHzNot Supported
# of Physical Cores2 (Threads: 4)4 (Threads: 4)
CacheL1: 256KB, L2: 1.0MB, L3: 4MBL1: 512KB, L2: 2.0MB,
TDP87W95W
Yearly Running Cost$15.88$17.34
Other
First Seen on ChartQ1 2010Q3 2011
# of Samples211120
CPU Rank33373284
CPU Value29.837.9
Single Thread Rating(% diff. to max in group)1382(0.0%)1268(-8.2%)
CPU Mark(% diff. to max in group)2387(-3.0%)2462(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 9th of February 2026 - Higher results represent better performance
Intel Core i5-661 @ 3.33GHz
2,387
AMD Phenom II X4 850
2,462
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 9th of February 2026 - Higher results represent better value
Intel Core i5-661 @ 3.33GHz
29.8
AMD Phenom II X4 850
37.9
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 9th of February 2026 - Higher results represent better performance
Intel Core i5-661 @ 3.33GHz
1,382
AMD Phenom II X4 850
1,268
PassMark Software © 2008-2026
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
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 Core i5-661 @ 3.33GHz AMD Phenom II X4 850
Max TDP87W95W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.