Core 2 Extreme X7800 vs Core i7-3840QM

Place in the ranking	1475	2686
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Core 2 Extreme
Power efficiency	7.82	1.53
Architecture codename	Ivy Bridge (2012−2013)	Merom XE (2007)
Release date	3 September 2012 (12 years ago)	17 July 2007 (17 years ago)
Launch price (MSRP)	$568	$851

Detailed specifications

Core i7-3840QM and Core 2 Extreme X7800 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	8	2
Base clock speed	2.8 GHz	2.6 GHz
Boost clock speed	3.8 GHz	2.6 GHz
Bus rate	5 GT/s	800 MHz
L1 cache	64K (per core)	128 KB
L2 cache	256K (per core)	4 MB
L3 cache	8 MB (shared)	4 MB L2 Cache
Chip lithography	22 nm	65 nm
Die size	160 mm²	143 mm²
Maximum core temperature	105 °C	100 °C
Number of transistors	1,400 million	291 Million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	1.1V-1.375V

Compatibility

Information on Core i7-3840QM and Core 2 Extreme X7800 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	1	no data
Socket	FCBGA1224,FCPGA988	PPGA478
Power consumption (TDP)	45 Watt	44 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3840QM and Core 2 Extreme X7800. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	-
FDI	+	no data
Fast Memory Access	+	no data
FSB parity	no data	-

Security technologies

Core i7-3840QM and Core 2 Extreme X7800 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3840QM and Core 2 Extreme X7800 are enumerated here.

AMD-V	+	-
VT-d	+	no data
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3840QM and Core 2 Extreme X7800. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 4000	no data
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.3 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-3840QM and Core 2 Extreme X7800 integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-3840QM and Core 2 Extreme X7800.

PCIe version	3.0	no data
PCI Express lanes	16	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.

i7-3840QM 3.86
+422%

Core 2 Extreme X7800 0.74

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.

i7-3840QM 5901
+419%

Core 2 Extreme X7800 1138

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.

i7-3840QM 6998
+237%

Core 2 Extreme X7800 2079

Gaming performance

Pros & cons summary

Performance score	3.86	0.74
Recency	3 September 2012	17 July 2007
Physical cores	4	2
Threads	8	2
Chip lithography	22 nm	65 nm
Power consumption (TDP)	45 Watt	44 Watt

i7-3840QM has a 421.6% higher aggregate performance score, an age advantage of 5 years, 100% more physical cores and 300% more threads, and a 195.5% more advanced lithography process.

Core 2 Extreme X7800, on the other hand, has 2.3% lower power consumption.

The Core i7-3840QM is our recommended choice as it beats the Core 2 Extreme X7800 in performance tests.

Should you still have questions on choice between Core i7-3840QM and Core 2 Extreme X7800, ask them in Comments section, and we shall answer.