Atom Z3740 vs Core 2 Duo P8400

Place in the ranking	2862	3022
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core 2 Duo	no data
Power efficiency	2.01	18.45
Architecture codename	Penryn (2008−2011)	Bay Trail-T (2013−2014)
Release date	15 July 2008 (16 years ago)	27 September 2013 (11 years ago)
Launch price (MSRP)	$209	$32

Detailed specifications

Core 2 Duo P8400 and Atom Z3740 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	2.26 GHz	1.33 GHz
Boost clock speed	2.26 GHz	1.86 GHz
Bus rate	1066 MHz	no data
L1 cache	128 KB	64K (per core)
L2 cache	3 MB	512K (per core)
L3 cache	3 MB L2 Cache	0 KB
Chip lithography	45 nm	22 nm
Die size	107 mm²	no data
Maximum core temperature	105 °C	90 °C
Number of transistors	410 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.05V-1.15V	no data

Compatibility

Information on Core 2 Duo P8400 and Atom Z3740 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	BGA479,PBGA479,PGA478	UTFCBGA1380
Power consumption (TDP)	25 Watt	2 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo P8400 and Atom Z3740. You'll probably need this information if you require some particular technology.

AES-NI	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Duo P8400 and Atom Z3740 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	no data	+
Identity Protection	-	+
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo P8400 and Atom Z3740 are enumerated here.

VT-x

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo P8400 and Atom Z3740. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR3
Maximum memory size	no data	4 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	17.1 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD Graphics for Intel Atom Processor Z3700 Series
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	667 MHz

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 P8400 0.53
+35.9%

Atom Z3740 0.39

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 Duo P8400 848
+36.6%

Atom Z3740 621

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Core 2 Duo P8400 2497
+159%

Atom Z3740 963

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Core 2 Duo P8400 4630
+37%

Atom Z3740 3380

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Core 2 Duo P8400 2036
+10.8%

Atom Z3740 1838

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Core 2 Duo P8400 34.2

Atom Z3740 29
+17.9%

Gaming performance

Pros & cons summary

Performance score	0.53	0.39
Recency	15 July 2008	27 September 2013
Physical cores	2	4
Threads	2	4
Chip lithography	45 nm	22 nm
Power consumption (TDP)	25 Watt	2 Watt

Core 2 Duo P8400 has a 35.9% higher aggregate performance score.

Atom Z3740, on the other hand, has an age advantage of 5 years, 100% more physical cores and 100% more threads, a 104.5% more advanced lithography process, and 1150% lower power consumption.

The Core 2 Duo P8400 is our recommended choice as it beats the Atom Z3740 in performance tests.

Should you still have questions on choice between Core 2 Duo P8400 and Atom Z3740, ask them in Comments section, and we shall answer.