iconcharts
2

CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Xeon L5638 vs Xeon E3-1275

The Intel Xeon E3-1275 @ 3.40GHz is newer than Intel Xeon L5638 @ 2.00GHz and is around 48% faster in multi-threaded (CPU Mark) testing. It is also significantly faster in single-thread testing. Also, Intel Xeon E3-1275 @ 3.40GHz uses around 45% more power. All the CPUs in this comparison belong in the Server CPU Class. The values below were tabulated from a combined 148 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 L5638 @ 2.00GHz×Intel Xeon E3-1275 @ 3.40GHz+ ADD
Price Search Online $160 - BUY
Socket TypeLGA1366LGA1155
CPU ClassServerServer
Clockspeed2.0 GHz3.4 GHz
Turbo SpeedUp to 2.4 GHzUp to 3.8 GHz
# of Physical Cores6 (Threads: 12)4 (Threads: 8)
CacheL1: 512KB, L2: 2.0MB, L3: 12MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP60W95W
Yearly Running Cost$10.95$17.34
Other
First Seen on ChartQ2 2011Q2 2011
# of Samples14134
CPU Value53.034.4
Single Thread Rating(% diff. to max in group)862(-51.6%)1781(0.0%)
CPU Mark(% diff. to max in group)3707(-32.7%)5504(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 24th of April 2025 - Higher results represent better performance
Intel Xeon L5638 @ 2.00GHz
3,707
Intel Xeon E3-1275 @ 3.40GHz
5,504
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 24th of April 2025 - Higher results represent better value
Intel Xeon L5638 @ 2.00GHz
53.0
Intel Xeon E3-1275 @ 3.40GHz
34.4
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 24th of April 2025 - Higher results represent better performance
Intel Xeon L5638 @ 2.00GHz
862
Intel Xeon E3-1275 @ 3.40GHz
1,781
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 L5638 @ 2.00GHz Intel Xeon E3-1275 @ 3.40GHz
Max TDP60W95W
Power consumption per day (kWh)0.120.19
Running cost per day$0.030$0.048
Power consumption per year (kWh)43.869.3
Running cost per year$10.95$17.34
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.