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Intel Pentium G645T vs Core2 Extreme X6800

The Intel Pentium G645T @ 2.50GHz is newer than Intel Core2 Extreme X6800 @ 2.93GHz and is around 11% faster in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Also, Intel Pentium G645T @ 2.50GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 171 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 Pentium G645T @ 2.50GHz×Intel Core2 Extreme X6800 @ 2.93GHz+ ADD
Price Search Online Search Online
Socket TypeLGA1155PLGA775
CPU ClassDesktopDesktop
Clockspeed2.5 GHz2.9 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 128KB, L2: 0.5MB, L3: 3MBL1: 128KB, L2: 4.0MB, L3: 0MB
TDP35W75W
Yearly Running Cost$6.39$13.69
Other
First Seen on ChartQ1 2012Q4 2008
# of Samples48123
CPU Rank42264345
CPU Value5.54.2
Single Thread Rating(% diff. to max in group)1132(0.0%)1118(-1.3%)
CPU Mark(% diff. to max in group)1238(0.0%)1118(-9.7%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 10th of March 2026 - Higher results represent better performance
Intel Pentium G645T @ 2.50GHz
1,238
Intel Core2 Extreme X6800 @ 2.93GHz
1,118
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 10th of March 2026 - Higher results represent better value
Intel Pentium G645T @ 2.50GHz
5.5
Intel Core2 Extreme X6800 @ 2.93GHz
4.2
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 10th of March 2026 - Higher results represent better performance
Intel Pentium G645T @ 2.50GHz
1,132
Intel Core2 Extreme X6800 @ 2.93GHz
1,118
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 Pentium G645T @ 2.50GHz Intel Core2 Extreme X6800 @ 2.93GHz
Max TDP35W75W
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.