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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Xeon E5-1650 v3 vs i7-6900K vs i7-5820K vs i7-6800K

The CPUs selected in this comparison belong in different CPU Classes: Server, Desktop. Consider, selecting CPUs from simliar CPU Class for more apt comparison.The values below were tabulated from a combined 8478 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 E5-1650 v3 @ 3.50GHz×Intel Core i7-6900K @ 3.20GHz×Intel Core i7-5820K @ 3.30GHz×Intel Core i7-6800K @ 3.40GHz+ ADD
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Socket TypeLGA2011-v3FCLGA2011-3LGA2011-v3LGA2011-v3
CPU ClassServerDesktopDesktopDesktop
Clockspeed3.5 GHz3.2 GHz3.3 GHz3.4 GHz
Turbo SpeedUp to 3.8 GHzUp to 4.0 GHzUp to 3.6 GHzUp to 3.8 GHz
# of Physical Cores6 (Threads: 12)8 (Threads: 16)6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 15MBL1: 512KB, L2: 2.0MB, L3: 20MBL1: 384KB, L2: 1.5MB, L3: 15MBL1: 384KB, L2: 1.5MB, L3: 15MB
TDP140W140W140W140W
Yearly Running Cost$25.55$25.55$25.55$25.55
Other
First Seen on ChartQ4 2014Q2 2016Q3 2014Q2 2016
# of Samples116852549561829
CPU Value7.30.00.00.0
Single Thread Rating(% diff. to max in group)2123(-8.5%)2320(0.0%)1990(-14.2%)2260(-2.6%)
CPU Mark(% diff. to max in group)10393(-27.8%)14403(0.0%)9829(-31.8%)10728(-25.5%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 10th of April 2025 - Higher results represent better performance
Intel Xeon E5-1650 v3 @ 3.50GHz
10,393
Intel Core i7-6900K @ 3.20GHz
14,403
Intel Core i7-5820K @ 3.30GHz
9,829
Intel Core i7-6800K @ 3.40GHz
10,728
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 10th of April 2025 - Higher results represent better value
Intel Xeon E5-1650 v3 @ 3.50GHz
7.3
Intel Core i7-6900K @ 3.20GHz
NA
Intel Core i7-5820K @ 3.30GHz
NA
Intel Core i7-6800K @ 3.40GHz
NA
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 10th of April 2025 - Higher results represent better performance
Intel Xeon E5-1650 v3 @ 3.50GHz
2,123
Intel Core i7-6900K @ 3.20GHz
2,320
Intel Core i7-5820K @ 3.30GHz
1,990
Intel Core i7-6800K @ 3.40GHz
2,260
PassMark Software © 2008-2025
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 E5-1650 v3 @ 3.50GHz Intel Core i7-6900K @ 3.20GHz Intel Core i7-5820K @ 3.30GHz Intel Core i7-6800K @ 3.40GHz
Max TDP140W140W140W140W
Power consumption per day (kWh)NANANANA
Running cost per dayNANANANA
Power consumption per year (kWh)NANANANA
Running cost per yearNANANANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.