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Intel Xeon X3440 vs Xeon W3520

The Intel Xeon X3440 @ 2.53GHz is newer than Intel Xeon W3520 @ 2.67GHz and is around -6% slower in multi-threaded (CPU Mark) testing. The Intel Xeon X3440 @ 2.53GHz is around -9% slower in single-thread testing. Also, Intel Xeon W3520 @ 2.67GHz uses around 31% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 712 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 X3440 @ 2.53GHz×Intel Xeon W3520 @ 2.67GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1156LGA1366
CPU ClassServerServer
Clockspeed2.5 GHz2.7 GHz
Turbo SpeedUp to 2.9 GHzUp to 2.9 GHz
# of Physical Cores4 (Threads: 8)4 (Threads: 8)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP95W130W
Yearly Running Cost$17.34$23.73
Other
First Seen on ChartQ4 2009Q1 2009
# of Samples167545
CPU Rank31203043
CPU Value64.4117.8
Single Thread Rating(% diff. to max in group)1142(-9.3%)1259(0.0%)
CPU Mark(% diff. to max in group)2769(-6.0%)2946(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 17th of February 2026 - Higher results represent better performance
Intel Xeon X3440 @ 2.53GHz
2,769
Intel Xeon W3520 @ 2.67GHz
2,946
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 17th of February 2026 - Higher results represent better value
Intel Xeon X3440 @ 2.53GHz
64.4
Intel Xeon W3520 @ 2.67GHz
117.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 17th of February 2026 - Higher results represent better performance
Intel Xeon X3440 @ 2.53GHz
1,142
Intel Xeon W3520 @ 2.67GHz
1,259
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 X3440 @ 2.53GHz Intel Xeon W3520 @ 2.67GHz
Max TDP95W130W
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.