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Intel Xeon E5-2637 vs Xeon E3-1205 v6

The Intel Xeon E3-1205 v6 @ 3.00GHz is newer than Intel Xeon E5-2637 @ 3.00GHz and is significantly faster in multi-threaded (CPU Mark) testing. The Intel Xeon E3-1205 v6 @ 3.00GHz is around 23% faster in single-thread testing. Also, Intel Xeon E5-2637 @ 3.00GHz uses around 21% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 7 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 E5-2637 @ 3.00GHz×Intel Xeon E3-1205 v6 @ 3.00GHz+ ADD
Price Search Online Search Online
Socket TypeFCLGA2011FCLGA1151
CPU ClassServerServer
Clockspeed3.0 GHz3.0 GHz
Turbo SpeedUp to 3.5 GHzNot Supported
# of Physical Cores2 (Threads: 4)4 (Threads: 4)
CacheL1: 512KB, L2: 2.0MB, L3: 5MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP80W65W
Yearly Running Cost$14.60$11.86
OtherIntel HD Graphics P630
First Seen on ChartQ2 2018Q1 2020
# of Samples61
CPU Rank30562234
CPU Value37.729.4
Single Thread Rating(% diff. to max in group)1526(-18.6%)1875(0.0%)
CPU Mark(% diff. to max in group)2978(-47.6%)5682(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 13th of March 2026 - Higher results represent better performance
Intel Xeon E5-2637 @ 3.00GHz
2,978
Intel Xeon E3-1205 v6 @ 3.00GHz
5,682
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 13th of March 2026 - Higher results represent better value
Intel Xeon E5-2637 @ 3.00GHz
37.7
Intel Xeon E3-1205 v6 @ 3.00GHz
29.4
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 13th of March 2026 - Higher results represent better performance
Intel Xeon E5-2637 @ 3.00GHz
1,526
Intel Xeon E3-1205 v6 @ 3.00GHz
1,875
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 E5-2637 @ 3.00GHz Intel Xeon E3-1205 v6 @ 3.00GHz
Max TDP80W65W
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.