Core Duo L2400 vs Core 2 Extreme QX9300

Place in the ranking	2392	3198
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Core 2 Extreme	Core Duo
Power efficiency	2.40	2.31
Architecture codename	Penryn (2008−2011)	Yonah (2005−2006)
Release date	August 2008 (16 years ago)	no data

Detailed specifications

Core 2 Extreme QX9300 and Core Duo L2400 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	2
Base clock speed	2.53 GHz	1.66 GHz
Boost clock speed	2.53 GHz	1.66 GHz
Bus rate	1066 MHz	533 MHz
L1 cache	64 KB	no data
L2 cache	12 MB	no data
L3 cache	0 KB	2 MB L2 Cache
Chip lithography	45 nm	65 nm
Die size	2x 107 mm²	no data
Maximum core temperature	100 °C	100 °C
64 bit support	+	-
Windows 11 compatibility	-	-
Unlocked multiplier	+	-
VID voltage range	1.05V-1.175V	1.0V - 1.212V

Compatibility

Information on Core 2 Extreme QX9300 and Core Duo L2400 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	2	no data
Socket	PGA478	PBGA479
Power consumption (TDP)	45 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX9300 and Core Duo L2400. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	no data	-
Demand Based Switching	-	-
PAE	no data	32 Bit
AMT	+	no data
FSB parity	-	-

Security technologies

Core 2 Extreme QX9300 and Core Duo L2400 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX9300 and Core Duo L2400 are enumerated here.

VT-x

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 QX9300 1.14
+418%

Duo L2400 0.22

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 QX9300 1805
+419%

Duo L2400 348

Gaming performance

Pros & cons summary

Performance score	1.14	0.22
Physical cores	4	2
Threads	4	2
Chip lithography	45 nm	65 nm
Power consumption (TDP)	45 Watt	15 Watt

Core 2 Extreme QX9300 has a 418.2% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.

Duo L2400, on the other hand, has 200% lower power consumption.

The Core 2 Extreme QX9300 is our recommended choice as it beats the Core Duo L2400 in performance tests.

Should you still have questions on choice between Core 2 Extreme QX9300 and Core Duo L2400, ask them in Comments section, and we shall answer.