Athlon II X4 640 vs Core 2 Extreme X6800

Place in the ranking	2703	2192
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	2.92
Market segment	Desktop processor	Desktop processor
Series	Core 2 Extreme (Desktop)	no data
Power efficiency	0.88	1.41
Architecture codename	Conroe (2006−2007)	Propus (2009−2011)
Release date	no data (2024 years ago)	11 May 2010 (14 years ago)
Launch price (MSRP)	no data	$80

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core 2 Extreme (Desktop) X6800 and Athlon II X4 640 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)	4 (Quad-Core)
Threads	2	4
Base clock speed	no data	3 GHz
Boost clock speed	2.93 GHz	3 GHz
Bus rate	1066 MHz	no data
L1 cache	no data	128 KB (per core)
L2 cache	no data	512 KB (per core)
L3 cache	no data	0 KB
Chip lithography	65 nm	45 nm
Die size	no data	169 mm²
Number of transistors	no data	300 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core 2 Extreme (Desktop) X6800 and Athlon II X4 640 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	AM3
Power consumption (TDP)	75 Watt	95 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme (Desktop) X6800 and Athlon II X4 640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

no data

DDR3

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme (Desktop) X6800 and Athlon II X4 640.

PCIe version

no data

2.0

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 Extreme X6800 0.72

Athlon II X4 640 1.47
+104%

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.

Core 2 Extreme X6800 1095

Athlon II X4 640 2245
+105%

Gaming performance

Pros & cons summary

Performance score	0.72	1.47
Physical cores	2	4
Threads	2	4
Chip lithography	65 nm	45 nm
Power consumption (TDP)	75 Watt	95 Watt

Core 2 Extreme X6800 has 26.7% lower power consumption.

Athlon II X4 640, on the other hand, has a 104.2% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.

The Athlon II X4 640 is our recommended choice as it beats the Core 2 Extreme X6800 in performance tests.

Should you still have questions on choice between Core 2 Extreme X6800 and Athlon II X4 640, ask them in Comments section, and we shall answer.