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Intel Xeon E5440 vs Xeon X5450

The Intel Xeon E5440 @ 2.83GHz is newer than Intel Xeon X5450 @ 3.00GHz however both CPUs have comparable multi-threaded (CPU Mark) and single-thread rating. Also, Intel Xeon X5450 @ 3.00GHz uses around 40% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 1041 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 E5440 @ 2.83GHz×Intel Xeon X5450 @ 3.00GHz+ ADD
Price Search Online Search Online
Socket TypeLGA771LGA771
CPU ClassServerServer
Clockspeed2.8 GHz3.0 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 256KB, L2: 12.0MB, L3: 0MBL1: 256KB, L2: 12.0MB, L3: 0MB
TDP80W120W
Yearly Running Cost$14.60$21.90
Other
First Seen on ChartQ1 2009Q1 2009
# of Samples533508
CPU Rank33903346
CPU Value62.341.2
Single Thread Rating(% diff. to max in group)1224(-3.1%)1263(0.0%)
CPU Mark(% diff. to max in group)2367(-2.6%)2430(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 14th of March 2026 - Higher results represent better performance
Intel Xeon E5440 @ 2.83GHz
2,367
Intel Xeon X5450 @ 3.00GHz
2,430
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 14th of March 2026 - Higher results represent better value
Intel Xeon E5440 @ 2.83GHz
62.3
Intel Xeon X5450 @ 3.00GHz
41.2
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 14th of March 2026 - Higher results represent better performance
Intel Xeon E5440 @ 2.83GHz
1,224
Intel Xeon X5450 @ 3.00GHz
1,263
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 E5440 @ 2.83GHz Intel Xeon X5450 @ 3.00GHz
Max TDP80W120W
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.