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Intel Xeon W3680 vs Xeon E5649

The Intel Xeon E5649 @ 2.53GHz is newer than Intel Xeon W3680 @ 3.33GHz and is around -20% slower in multi-threaded (CPU Mark) testing. The Intel Xeon E5649 @ 2.53GHz is around -17% slower in single-thread testing. Also, Intel Xeon W3680 @ 3.33GHz uses around 48% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 537 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 E5649 @ 2.53GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1366LGA1366
CPU ClassServerServer
Clockspeed3.3 GHz2.5 GHz
Turbo SpeedUp to 3.6 GHzUp to 2.9 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 384KB, L2: 1.5MB, L3: 12MB
TDP130W80W
Yearly Running Cost$23.73$14.60
Other
First Seen on ChartQ2 2010Q3 2011
# of Samples49245
CPU Rank19312217
CPU Value56.343.4
Single Thread Rating(% diff. to max in group)1576(0.0%)1306(-17.1%)
CPU Mark(% diff. to max in group)7042(0.0%)5646(-19.8%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 16th of February 2026 - Higher results represent better performance
Intel Xeon W3680 @ 3.33GHz
7,042
Intel Xeon E5649 @ 2.53GHz
5,646
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 16th of February 2026 - Higher results represent better value
Intel Xeon W3680 @ 3.33GHz
56.3
Intel Xeon E5649 @ 2.53GHz
43.4
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 16th of February 2026 - Higher results represent better performance
Intel Xeon W3680 @ 3.33GHz
1,576
Intel Xeon E5649 @ 2.53GHz
1,306
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 E5649 @ 2.53GHz
Max TDP130W80W
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.