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Intel Xeon E5-2643 v3 vs Xeon W-11855M

The Intel Xeon W-11855M @ 3.20GHz is newer than Intel Xeon E5-2643 v3 @ 3.40GHz and is significantly faster in multi-threaded (CPU Mark) testing. It is also significantly faster in single-thread testing. Also, Intel Xeon W-11855M @ 3.20GHz uses substantially less power. The CPUs selected in this comparison belong in different CPU Classes: Server, Laptop. Consider, selecting CPUs from simliar CPU Class for more apt comparison. The values below were tabulated from a combined 320 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 E5-2643 v3 @ 3.40GHz×Intel Xeon W-11855M @ 3.20GHz+ ADD
Price Search Online Search Online
Socket TypeLGA2011-v3FCBGA1787
CPU ClassServerLaptop, Server
Clockspeed3.4 GHz3.2 GHz
Turbo SpeedUp to 3.7 GHzUp to 4.9 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 20MBL1: 480KB, L2: 7.5MB, L3: 18MB
TDP135W45W
Yearly Running Cost$24.64$8.21
OtherIntel UHD Graphics for 11th Gen Intel Processors
First Seen on ChartQ1 2015Q2 2021
# of Samples81239
CPU Rank15761103
CPU Value44.338.7
Single Thread Rating(% diff. to max in group)2032(-35.1%)3132(0.0%)
CPU Mark(% diff. to max in group)10190(-41.4%)17397(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 17th of March 2026 - Higher results represent better performance
Intel Xeon E5-2643 v3 @ 3.40GHz
10,190
Intel Xeon W-11855M @ 3.20GHz
17,397
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 17th of March 2026 - Higher results represent better value
Intel Xeon E5-2643 v3 @ 3.40GHz
44.3
Intel Xeon W-11855M @ 3.20GHz
38.7
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 17th of March 2026 - Higher results represent better performance
Intel Xeon E5-2643 v3 @ 3.40GHz
2,032
Intel Xeon W-11855M @ 3.20GHz
3,132
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 E5-2643 v3 @ 3.40GHz Intel Xeon W-11855M @ 3.20GHz
Max TDP135W45W
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.