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Intel Xeon E5-2651 v2 vs Xeon E5-1660

The Intel Xeon E5-2651 v2 @ 1.80GHz is newer than Intel Xeon E5-1660 @ 3.30GHz and is around 16% faster in multi-threaded (CPU Mark) testing. The Intel Xeon E5-2651 v2 @ 1.80GHz is around -36% slower in single-thread testing. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 281 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 Xeon E5-2651 v2 @ 1.80GHz×Intel Xeon E5-1660 @ 3.30GHz+ ADD
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Socket TypeLGA 2011LGA2011
CPU ClassServerServer
Clockspeed1.8 GHz3.3 GHz
Turbo SpeedUp to 2.2 GHzUp to 3.9 GHz
# of Physical Cores12 (Threads: 24)6 (Threads: 12)
CacheL1: 768KB, L2: 3.0MB, L3: 30MBL1: 384KB, L2: 1.5MB, L3: 15MB
TDPNA2130W
Yearly Running CostNA$23.73
Other
First Seen on ChartQ2 2016Q3 2012
# of Samples19262
CPU Rank16041731
CPU Value34.631.2
Single Thread Rating(% diff. to max in group)1134(-36.4%)1783(0.0%)
CPU Mark(% diff. to max in group)9631(0.0%)8324(-13.6%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
2 - Information not available. Do you know? Notify Us.

CPU Mark Rating
As of 12th of February 2026 - Higher results represent better performance
Intel Xeon E5-2651 v2 @ 1.80GHz
9,631
Intel Xeon E5-1660 @ 3.30GHz
8,324
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 12th of February 2026 - Higher results represent better value
Intel Xeon E5-2651 v2 @ 1.80GHz
34.6
Intel Xeon E5-1660 @ 3.30GHz
31.2
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 12th of February 2026 - Higher results represent better performance
Intel Xeon E5-2651 v2 @ 1.80GHz
1,134
Intel Xeon E5-1660 @ 3.30GHz
1,783
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 Xeon E5-2651 v2 @ 1.80GHz Intel Xeon E5-1660 @ 3.30GHz
Max TDPNA130W
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.