Core 2 Quad Q9550s vs Core i7-4790

Primary details

Comparing Core i7-4790 and Core 2 Quad Q9550s processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1288	not rated
Place by popularity	71	not in top-100
Cost-effectiveness evaluation	0.82	no data
Market segment	Desktop processor	Desktop processor
Series	Core i7 (Desktop)	no data
Power efficiency	5.16	no data
Architecture codename	Haswell (2013−2015)	Yorkfield (2007−2009)
Release date	1 May 2014 (10 years ago)	27 January 2009 (15 years ago)
Launch price (MSRP)	$303	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-4790 and Core 2 Quad Q9550s 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)	4 (Quad-Core)
Threads	8	4
Base clock speed	3.6 GHz	2.83 GHz
Boost clock speed	4 GHz	0.83 GHz
Bus rate	5 GT/s	1333 MHz
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	12 MB (shared)
L3 cache	8 MB (shared)	0 KB
Chip lithography	22 nm	45 nm
Die size	177 mm2	2x 107 mm2
Maximum case temperature (TCase)	72 °C	76 °C
Number of transistors	1,400 million	820 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.3625V

Compatibility

Information on Core i7-4790 and Core 2 Quad Q9550s 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	FCLGA1150	LGA775
Power consumption (TDP)	84 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-4790 and Core 2 Quad Q9550s. 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	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	+	+
SIPP	+	-
Demand Based Switching	no data	-
FDI	+	no data
FSB parity	no data	+

Security technologies

Core i7-4790 and Core 2 Quad Q9550s technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-4790 and Core 2 Quad Q9550s are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-4790 and Core 2 Quad Q9550s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
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 4600	On certain motherboards (Chipset feature)
Max video memory	2 GB	no data
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.2 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-4790 and Core 2 Quad Q9550s integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data
VGA	+	no data

Graphics image quality

Maximum display resolutions supported by Core i7-4790 and Core 2 Quad Q9550s integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	3840x2160@60Hz	no data
Max resolution over DisplayPort	3840x2160@60Hz	no data
Max resolution over VGA	1920x1200@60Hz	no data

Graphics API support

APIs supported by Core i7-4790 and Core 2 Quad Q9550s 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 i7-4790 and Core 2 Quad Q9550s.

PCIe version	Up to 3.0	2.0
PCI Express lanes	16	no data

Pros & cons summary

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Recency	1 May 2014	27 January 2009
Threads	8	4
Chip lithography	22 nm	45 nm
Power consumption (TDP)	84 Watt	65 Watt

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Should you still have questions on choice between Core i7-4790 and Core 2 Quad Q9550s, ask them in Comments section, and we shall answer.

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