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Intel Xeon X5450 vs Xeon E5440

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 1037 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 X5450 @ 3.00GHz×Intel Xeon E5440 @ 2.83GHz+ ADD
Price Search Online Search Online
Socket TypeLGA771LGA771
CPU ClassServerServer
Clockspeed3.0 GHz2.8 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
TDP120W80W
Yearly Running Cost$21.90$14.60
Other
First Seen on ChartQ1 2009Q1 2009
# of Samples505532
CPU Value40.962.3
Single Thread Rating(% diff. to max in group)1261(0.0%)1224(-2.9%)
CPU Mark(% diff. to max in group)2416(0.0%)2367(-2.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 18th of November 2025 - Higher results represent better performance
Intel Xeon X5450 @ 3.00GHz
2,416
Intel Xeon E5440 @ 2.83GHz
2,367
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 18th of November 2025 - Higher results represent better value
Intel Xeon X5450 @ 3.00GHz
40.9
Intel Xeon E5440 @ 2.83GHz
62.3
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 18th of November 2025 - Higher results represent better performance
Intel Xeon X5450 @ 3.00GHz
1,261
Intel Xeon E5440 @ 2.83GHz
1,224
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 X5450 @ 3.00GHz Intel Xeon E5440 @ 2.83GHz
Max TDP120W80W
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.