Over 1,000,000 CPUs benchmarked
The AMD Phenom II X4 840T is newer than Intel Core i5-655K @ 3.20GHz also around 15% faster in multi-threaded (CPU Mark) testing, but Intel Core i5-655K @ 3.20GHz is around 12% faster in single-thread testing. However, AMD Phenom II X4 840T uses around 26% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 204 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.
Compare the performance of up to 5 different CPUs
Compare List | |
1: Intel Core i5-655K @ 3.20GHz | |
2: AMD Phenom II X4 840T | |
×Intel Core i5-655K @ 3.20GHz | ×AMD Phenom II X4 840T | + ADD | |
---|---|---|---|
Price | Search Online | Search Online | |
Socket Type | LGA1156 | AM2+/AM3 | |
CPU Class | Desktop | Desktop | |
Clockspeed | 3.2 GHz | 2.9 GHz | |
Turbo Speed | Up to 3.5 GHz | Up to 3.2 GHz | |
# of Physical Cores | 2 (Threads: 4) | 4 (Threads: 4) | |
Cache | L1: 256KB, L2: 1.0MB, L3: 4MB | L1: 512KB, L2: 2.0MB, L3: 6MB | |
TDP | 73W | 95W | |
Yearly Running Cost | $13.32 | $17.34 | |
Other | |||
First Seen on Chart | Q2 2010 | Q4 2010 | |
# of Samples | 46 | 158 | |
CPU Value | 26.2 | 40.7 | |
Single Thread Rating(% diff. to max in group) | 1446(0.0%) | 1272(-12.0%) | |
CPU Mark(% diff. to max in group) | 2017(-14.5%) | 2360(0.0%) |
Intel Core i5-655K @ 3.20GHz | 2,017 | |
AMD Phenom II X4 840T | 2,360 | |
PassMark Software © 2008-2025 |
Intel Core i5-655K @ 3.20GHz | 26.2 | |
AMD Phenom II X4 840T | 40.7 | |
PassMark Software © 2008-2025 |
Intel Core i5-655K @ 3.20GHz | 1,446 | |
AMD Phenom II X4 840T | 1,272 | |
PassMark Software © 2008-2025 |
Intel Core i5-655K @ 3.20GHz | AMD Phenom II X4 840T | |
---|---|---|
Max TDP | 73W | 95W |
Power consumption per day (kWh) | 0.15 | 0.19 |
Running cost per day | $0.036 | $0.048 |
Power consumption per year (kWh) | 53.3 | 69.3 |
Running cost per year | $13.32 | $17.34 |