i7-5775R vs i7-4790K

Primary details

Comparing Core i7-4790K and Core i7-5775R processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1204	1241
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.92	no data
Market segment	Desktop processor	Desktop processor
Series	Core i7 (Desktop)	Intel Core i7
Power efficiency	5.46	7.00
Architecture codename	Devil's Canyon	Broadwell (2015−2019)
Release date	June 2014 (10 years ago)	15 April 2015 (9 years ago)
Launch price (MSRP)	$339	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-4790K and Core i7-5775R 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	8
Base clock speed	4 GHz	3.3 GHz
Boost clock speed	4.4 GHz	3.8 GHz
Bus type	no data	DMI 2.0
Bus rate	5 GT/s	5 GT/s
Multiplier	no data	33
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	1 MB
L3 cache	8 MB (shared)	6 MB (shared)
Chip lithography	22 nm	14 nm
Die size	177 mm2	182 mm2
Maximum case temperature (TCase)	72 °C	72 °C
Number of transistors	1,400 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-4790K and Core i7-5775R 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	FCLGA1150	FCBGA1364
Power consumption (TDP)	88 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-4790K and Core i7-5775R. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
eDRAM	no data	128 MB
My WiFi	+	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
FDI	+	+

Security technologies

Core i7-4790K and Core i7-5775R technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	+
OS Guard	+	+
Anti-Theft	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-4790K and Core i7-5775R are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-4790K and Core i7-5775R. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3L-1333, DDR3L-1600, DDR3L-1866
Maximum memory size	32 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	29.86 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 4600	Intel Iris Pro Graphics 6200
Max video memory	2 GB	32 GB
Quick Sync Video	+	+
Clear Video	no data	+
Clear Video HD	+	+
Graphics max frequency	1.25 GHz	1.15 GHz
Execution Units	20	no data
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i7-4790K and Core i7-5775R integrated GPUs.

Number of displays supported	3	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+
DVI	+	+
VGA	+	+

Graphics image quality

Maximum display resolutions supported by Core i7-4790K and Core i7-5775R integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	3840x2160@24Hz	4096x2304@24Hz
Max resolution over eDP	3840x2160@60Hz	3840x2160@60Hz
Max resolution over DisplayPort	3840x2160@60Hz	3840x2160@60Hz
Max resolution over VGA	1920x1200@60Hz	1920x1200@60Hz

Graphics API support

APIs supported by Core i7-4790K and Core i7-5775R integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	11.2
OpenGL	4.3	4.3

Peripherals

Specifications and connection of peripherals supported by Core i7-4790K and Core i7-5775R.

PCIe version	3.0	3.0
PCI Express lanes	16	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.

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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.

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Pros & cons summary

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Performance score	5.27	4.99
Integrated graphics card	1.84	3.95
Recency	on June 2014	15 April 2015
Chip lithography	22 nm	14 nm
Power consumption (TDP)	88 Watt	65 Watt

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Should you still have questions on choice between Core i7-4790K and Core i7-5775R, ask them in Comments section, and we shall answer.

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