Phenom X3 8400 vs Core 2 Duo E6700

Place in performance ranking	2667	2564
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.98	7.32
Market segment	Desktop processor	Desktop processor
Series	Core 2 Duo (Desktop)	no data
Architecture codename	Conroe (2006−2007)	Toliman (2008)
Release date	no data	March 2008 (16 years ago)
Current price	$18	$9.95

Cost-effectiveness evaluation

Performance per price, higher is better.

Phenom X3 8400 has 647% better value for money than Core 2 Duo E6700.

Detailed specifications

Core 2 Duo E6700 and Phenom X3 8400 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	3 (Tri-Core)
Threads	2	3
Boost clock speed	2.66 GHz	2.1 GHz
Bus support	1066 MHz	no data
L1 cache	no data	128 KB (per core)
L2 cache	no data	512 KB (per core)
L3 cache	no data	2 MB (shared)
Chip lithography	65 nm	65 nm
Die size	no data	285 mm²
Number of transistors	no data	450 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core 2 Duo E6700 and Phenom X3 8400 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	no data	1
Socket	no data	AM2+
Power consumption (TDP)	65 Watt	95 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E6700 and Phenom X3 8400 are enumerated here.

AMD-V

no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Duo E6700 0.64

Phenom X3 8400 0.75
+17.2%

Phenom X3 8400 outperforms Core 2 Duo E6700 by 17% based on our aggregate benchmark results.

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 68%

Core 2 Duo E6700 990

Phenom X3 8400 1164
+17.6%

Phenom X3 8400 outperforms Core 2 Duo E6700 by 18% in Passmark.

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 42%

Core 2 Duo E6700 320
+68.4%

Phenom X3 8400 190

Core 2 Duo E6700 outperforms Phenom X3 8400 by 68% in GeekBench 5 Single-Core.

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 42%

Core 2 Duo E6700 546
+1.1%

Phenom X3 8400 540

Core 2 Duo E6700 outperforms Phenom X3 8400 by 1% in GeekBench 5 Multi-Core.