Core 2 Extreme QX9775 vs Core i7-5557U

Primary details

Comparing Core i7-5557U and Core 2 Extreme QX9775 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1841	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Architecture codename	Broadwell-U (2015)	Yorkfield (2007−2009)
Release date	1 March 2015 (9 years ago)	March 2008 (16 years ago)
Launch price (MSRP)	$426	no data
Current price	$856 (2x MSRP)	$1474

Detailed specifications

Core i7-5557U and Core 2 Extreme QX9775 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	4	4
Base clock speed	3.1 GHz	3.2 GHz
Boost clock speed	3.4 GHz	3.2 GHz
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	12 MB (shared)
L3 cache	4 MB (shared)	0 KB
Chip lithography	14 nm	45 nm
Die size	133 mm2	2x 107 mm2
Maximum core temperature	105 °C	63 °C
Maximum case temperature (TCase)	105 °C	63 °C
Number of transistors	1900 Million	820 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	Yes
VID voltage range	no data	0.85V-1.35V

Compatibility

Information on Core i7-5557U and Core 2 Extreme QX9775 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
Socket	FCBGA1168	LGA771
Power consumption (TDP)	28 Watt	150 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5557U and Core 2 Extreme QX9775. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	-
AVX	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
TSX	-	no data
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
SIPP	-	no data
Smart Response	+	no data
Demand Based Switching	no data	-
FDI	+	no data
Fast Memory Access	+	no data
FSB parity	no data	-
Status	Discontinued	Discontinued

Security technologies

Core i7-5557U and Core 2 Extreme QX9775 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Secure Key	+	no data
Identity Protection	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5557U and Core 2 Extreme QX9775 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5557U and Core 2 Extreme QX9775. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR2
Maximum memory size	16 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 Iris Graphics 6100	no data
Max video memory	16 GB	no data
Quick Sync Video	+	no data
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.1 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-5557U and Core 2 Extreme QX9775 integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	no data
HDMI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i7-5557U and Core 2 Extreme QX9775 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	2560x1600@60Hz	no data
Max resolution over DisplayPort	3840x2160@60Hz	no data

Graphics API support

APIs supported by Core i7-5557U and Core 2 Extreme QX9775 integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	no data
OpenGL	4.3	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-5557U and Core 2 Extreme QX9775.

PCIe version	2.0	no data
PCI Express lanes	12	no data

Pros & cons summary

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Physical cores	2	4
Chip lithography	14 nm	45 nm
Power consumption (TDP)	28 Watt	150 Watt

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Should you still have questions on choice between Core i7-5557U and Core 2 Extreme QX9775, ask them in Comments section, and we shall answer.

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