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Intel Xeon W3680 vs Xeon E5-2665

The Intel Xeon E5-2665 @ 2.40GHz is newer than Intel Xeon W3680 @ 3.33GHz and is around 18% faster in multi-threaded (CPU Mark) testing. The Intel Xeon E5-2665 @ 2.40GHz is around -12% slower in single-thread testing. Also, Intel Xeon W3680 @ 3.33GHz uses around 12% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 678 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 W3680 @ 3.33GHz×Intel Xeon E5-2665 @ 2.40GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1366LGA2011
CPU ClassServerServer
Clockspeed3.3 GHz2.4 GHz
Turbo SpeedUp to 3.6 GHzUp to 3.1 GHz
# of Physical Cores6 (Threads: 12)8 (Threads: 16)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 512KB, L2: 2.0MB, L3: 20MB
TDP130W115W
Yearly Running Cost$23.73$20.99
Other
First Seen on ChartQ2 2010Q2 2012
# of Samples495183
CPU Rank19491755
CPU Value56.38.5
Single Thread Rating(% diff. to max in group)1575(0.0%)1383(-12.2%)
CPU Mark(% diff. to max in group)7036(-15.0%)8280(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 9th of March 2026 - Higher results represent better performance
Intel Xeon W3680 @ 3.33GHz
7,036
Intel Xeon E5-2665 @ 2.40GHz
8,280
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 9th of March 2026 - Higher results represent better value
Intel Xeon W3680 @ 3.33GHz
56.3
Intel Xeon E5-2665 @ 2.40GHz
8.5
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 9th of March 2026 - Higher results represent better performance
Intel Xeon W3680 @ 3.33GHz
1,575
Intel Xeon E5-2665 @ 2.40GHz
1,383
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 W3680 @ 3.33GHz Intel Xeon E5-2665 @ 2.40GHz
Max TDP130W115W
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.