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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i7-990X vs i7-4820K

The Intel Core i7-4820K @ 3.70GHz is newer than Intel Core i7-990X @ 3.47GHz, while Intel Core i7-990X @ 3.47GHz is around 9% faster in multi-threaded (CPU Mark) testing, but Intel Core i7-4820K @ 3.70GHz is around 20% faster in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 1899 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 Core i7-990X @ 3.47GHz×Intel Core i7-4820K @ 3.70GHz+ ADD
Price $178.02 - BUY Search Online
Socket TypeLGA1366FCLGA2011
CPU ClassDesktopDesktop
Clockspeed3.5 GHz3.7 GHz
Turbo SpeedUp to 3.7 GHzUp to 3.9 GHz
# of Physical Cores6 (Threads: 12)4 (Threads: 8)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 256KB, L2: 1.0MB, L3: 10MB
TDP130W130W
Yearly Running Cost$23.73$23.73
Other
First Seen on ChartQ1 2011Q3 2013
# of Samples4611438
CPU Value40.032.4
Single Thread Rating(% diff. to max in group)1574(-19.5%)1956(0.0%)
CPU Mark(% diff. to max in group)7119(0.0%)6485(-8.9%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i7-990X @ 3.47GHz
7,119
Intel Core i7-4820K @ 3.70GHz
6,485
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 2nd of April 2025 - Higher results represent better value
Intel Core i7-990X @ 3.47GHz
40.0
Intel Core i7-4820K @ 3.70GHz
32.4
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i7-990X @ 3.47GHz
1,574
Intel Core i7-4820K @ 3.70GHz
1,956
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 Core i7-990X @ 3.47GHz Intel Core i7-4820K @ 3.70GHz
Max TDP130W130W
Power consumption per day (kWh)0.260.26
Running cost per day$0.065$0.065
Power consumption per year (kWh)94.994.9
Running cost per year$23.73$23.73
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.