Core i7-620UM vs Core 2 Extreme X7900

Place in the ranking	2680	2734
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core 2 Extreme	Intel Core i7
Power efficiency	1.49	3.34
Architecture codename	Merom (2006−2008)	Arrandale (2010−2011)
Release date	1 September 2007 (17 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	$851	$278

Detailed specifications

Core 2 Extreme X7900 and Core i7-620UM 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)	2 (Dual-core)
Threads	2	4
Base clock speed	2.8 GHz	1.06 GHz
Boost clock speed	2.8 GHz	2.13 GHz
Bus type	no data	DMI 1.0
Bus rate	800 MHz	1 × 2.5 GT/s
Multiplier	no data	8
L1 cache	128 KB	128 KB
L2 cache	4 MB	512 KB
L3 cache	0 KB	4 MB (shared)
Chip lithography	65 nm	32 nm
Die size	143 mm²	81+114 mm²
Maximum core temperature	100 °C	105 °C
Number of transistors	no data	382+177 Million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.1V-1.375V	no data

Compatibility

Information on Core 2 Extreme X7900 and Core i7-620UM 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	1 (Uniprocessor)
Socket	PPGA478	BGA1288
Power consumption (TDP)	44 Watt	18 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme X7900 and Core i7-620UM. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
AES-NI	-	+
FMA	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	+
Hyper-Threading Technology	-	+
Idle States	-	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Demand Based Switching	-	no data
PAE	no data	36 Bit
FDI	no data	+
Fast Memory Access	no data	+
AMT	+	no data
FSB parity	-	no data
Status	Discontinued	Discontinued

Security technologies

Core 2 Extreme X7900 and Core i7-620UM 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 X7900 and Core i7-620UM are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme X7900 and Core i7-620UM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1	DDR3-800
Maximum memory size	no data	8 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	12.799 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® HD Graphics for Previous Generation Intel® Processors
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	500 MHz

Graphics interfaces

Available interfaces and connections of Core 2 Extreme X7900 and Core i7-620UM integrated GPUs.

Number of displays supported

no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme X7900 and Core i7-620UM.

PCIe version	no data	2.0
PCI Express lanes	no data	16

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 X7900 0.72
+9.1%

i7-620UM 0.66

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 X7900 1104
+9.3%

i7-620UM 1010

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 Extreme X7900 3022
+43.2%

i7-620UM 2111

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 Extreme X7900 5764
+44%

i7-620UM 4004

Gaming performance

Pros & cons summary

Performance score	0.72	0.66
Recency	1 September 2007	7 January 2010
Threads	2	4
Chip lithography	65 nm	32 nm
Power consumption (TDP)	44 Watt	18 Watt

Core 2 Extreme X7900 has a 9.1% higher aggregate performance score.

i7-620UM, on the other hand, has an age advantage of 2 years, 100% more threads, a 103.1% more advanced lithography process, and 144.4% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Core 2 Extreme X7900 and Core i7-620UM.

Should you still have questions on choice between Core 2 Extreme X7900 and Core i7-620UM, ask them in Comments section, and we shall answer.