Core i7-4790K vs Core i7-4771 Full Specifications

Core i7-4790K vs Core i7-4771 Specifications

The Intel Core i7-4790K is a Desktop processor with 4 cores, launched in 2014. It is part of the Core i7 lineup, using the Haswell Refresh architecture with Socket LGA1150. The core-count is effectively doubled, to 8 threads. Core i7-4790K has 8MB of L3 cache and operates at 4 GHz by default, but can boost up to 4.4 GHz, depending on the workload. Intel is building the Core i7-4790K on a 22 nm production process. You may freely adjust the unlocked multiplier on Core i7-4790K, which simplifies overclocking greatly, as you can dial in any overclocking frequency up to 4.8GHz. Intel's processor supports DDR3 memory with a dual-channel interface. This processor features the (Intel HD Graphics 4600) integrated graphics solution. This processor can run on motherboards with the following chipsets: B85, C222, C224, C226, H81, H87, H97, Q87, Z87, Z97.

The Intel Core i7-4771 is a Desktop processor with 4 cores, launched in 2013. It is part of the Core i7 lineup, using the Haswell architecture with Socket LGA1150. The core-count is effectively doubled, to 8 threads. Core i7-4771 has 8MB of L3 cache and operates at 3.5 GHz by default, but can boost up to 3.9 GHz, depending on the workload. Intel is building the Core i7-4771 on a 22 nm production process. Intel's processor supports DDR3 memory with a dual-channel interface. This processor features the (Intel HD Graphics 4600) integrated graphics solution. This processor can run on motherboards with the following chipsets: B85, C222, C224, C226, H81, H87, H97, Q87, Z87, Z97.

Core i7-4790K vs Core i7-4771 General

	Core i7-4790K	Core i7-4771
Foundry	Intel	Intel
Manufacturer	Intel	Intel
Codename	Haswell	Haswell
Core Family	Haswell Refresh	Haswell
Market	Desktop	Desktop
Model	Core i7-4790K	Core i7-4771
Series	Intel Core i7	Intel Core i7
Type	Desktop	Desktop
Architecture	Haswell Devils Canyon	-
Achitecture codename	Haswell	Haswell
Microarchitecture	Haswell Refresh	Haswell
Market price	$ 339	-
Production Status	Active	Active
Release date	on May 2014	on September 2013
Released	May 2014	Sep 2013
Launch price (MSRP)	$339	$450
Price now	$317	$300
Place in performance rating	257	338
Value for money (0-100)	10.52	9.82
Manufacturing process technology	22 nm	22 nm
Process Size	22 nm	22 nm

Core i7-4790K vs Core i7-4771 Compatibility

	Core i7-4790K	Core i7-4771
Power consumption (TDP)	88 Watt	84 Watt
Max number of CPUs in a configuration	1	1
Max number of PCIe lanes	16	16
PCIe lanes	16	-
PCIe revision	3.0	Up to 3.0
PCIe version	3.0	-
Socket	LGA1150	LGA1150

Core i7-4790K vs Core i7-4771 Benchmarks

	Core i7-4790K	Core i7-4771
# of Cores	4	4
# of Threads	8	8
Base Clock	100 MHz	100 MHz
Boost Clock	4.4 GHz	3.9 GHz
CPU Cores	4	-
CPU Threads	8	-
Cache L1	64K (per core)	64K (per core)
Cache L2	256K (per core)	256K (per core)
Cache L3	8MB (shared)	8MB (shared)
Core Clock	4 GHz	3.5 GHz
Core Count	4	4
Frequency	4.00 GHz	3.5 GHz
Hyper-Threading	+	+
Hyperthreading	Yes	-
L1 Cache	4 x 32 kB Instruction 4 x 32 kB Data	4 x 32 kB Instruction 4 x 32 kB Data
L1 cache	256 KB	64 KB (per core)
L2 Cache	4 x 256 kB	4 x 256 kB
L2 cache	256K (per core)	256 KB (per core)
L3 Cache	1 x 8 MB	1 x 8 MB
L3 cache	8 MB	8 MB (shared)
L3-Cache	8.00 MB	-
Maximum frequency	4.4 GHz	3.9 GHz
Simultaneous Multithreading	Yes: Hyper-Threading	Yes: Hyper-Threading
TDP	88 W	84 W
TDP down	--	-
TDP up	--	-
Turbo (1 Core)	4.40 GHz	-
Turbo (4 Cores)	4.20 GHz	-
Turbo Boost	2.0	2.0
Turbo Clock	up to 4.4 GHz	up to 3.9 GHz

Core i7-4790K vs Core i7-4771 Memory Specifications

	Core i7-4790K	Core i7-4771
ECC	No	-
ECC Support	No	No
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB / s	25.6 GB / s
Maximum memory size	32 GB	32 GB
Memory Support	DDR3	DDR3
Memory channels	2	-
Memory type	DDR3-1600	-
Supported memory types	DDR3-1333, DDR3-1600, DDR3L-1333, DDR3L-1600	DDR3-1333, DDR3-1600, DDR3L-1333, DDR3L-1600
Max. Memory	32 GB	-

Core i7-4790K vs Core i7-4771 Technical Specs

	Core i7-4790K	Core i7-4771
64 bit support	+	+
Die Size	177 mm²	177 mm²
Die size	177 mm2	177 mm2
Includes CPU Cooler	Yes	Yes
Maximum case temperature (TCase)	72 °C	72 °C
Maximum core temperature	74 °C	72 °C
Multiplier	40.0x	35.0x
Multiplier Unlocked	No	No
My WiFi	+	+
Number of cores	4	4
Number of threads	8	8
Overclocking	Yes	-
Package
Part #	BX80646I74790K	BX80646I74771
Part#	unknown	SR1BW
SMP # CPUs	1	1
Technology	22 nm	-
Tjunction max.	--	-
Transistor count	1400 Million	1,400 million
Transistors	1400 million	1400 million
Unlocked	+	-
Voltage	unknown	unknown
tCaseMax	72°C	72°C

Core i7-4790K vs Core i7-4771 Integrated Graphics

	Core i7-4790K	Core i7-4771
Clear Video HD	+	+
DVI	+	+
DirectX	11.2 / 12	11.2 / 12
DirectX Version	11.1	-
DisplayPort	+	+
Execution Units	20	-
Execution units	20	-
FDI	+	+
GPU (Turbo)	1.25 GHz	-
GPU frequency	0.35 GHz	-
Generation	7.5	Core i7 (Haswell)
Graphics max frequency	1.25 GHz	1.2 GHz
HDMI	+	+
InTru 3D	+	+
Integrated Graphics	Intel HD Graphics 4600	Intel HD Graphics 4600
Integrated graphics	Intel HD Graphics 4600 (350 - 1250 MHz)	Intel HD 4600
Lithography	22 nm	22 nm
Max resolution over DisplayPort	3840x2160@60Hz	3840x2160@60Hz
Max resolution over HDMI 1.4	3840x2160@24Hz	4096x2304@24Hz
Max resolution over VGA	1920x1200@60Hz	1920x1200@60Hz
Max resolution over eDP	3840x2160@60Hz	3840x2160@60Hz
Max video memory	2 GB	2 GB
Max. displays	3	-
Number of displays supported	3	3
OpenGL	4.3	4.3
Quick Sync	+	+
eDP	+	+

Core i7-4790K vs Core i7-4771 Security Technologies

	Core i7-4790K	Core i7-4771
Anti-Theft	+	+
Bitcoin / BTC (SHA256)	53 Mh/s	45 Mh/s
EDB	+	+
Identity Protection	+	+
OS Guard	+	+
Secure Key	+	+
TXT	+	+

Core i7-4790K vs Core i7-4771 Technologies and Extensions

	Core i7-4790K	Core i7-4771
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Idle States	+	+
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Thermal Monitoring	+	+
vPro	+	+

Core i7-4790K vs Core i7-4771 Virtualization Technologies

	Core i7-4790K	Core i7-4771
AMD-V	+	-
EPT	+	+
VT-d	+	+
VT-x	+	+
Virtualization	VT-x, VT-x EPT, VT-d	-

Core i7-4790K vs Core i7-4771 Other

	Core i7-4790K	Core i7-4771
Packaging	Boxed	Boxed
VGA	+	+
	MMX SSE SSE2 SSE3 SSSE3 SSE4.2 AVX AVX2 EIST Intel 64 XD bit VT-x VT-d HTT AES-NI TSX TXT CLMUL FMA3 F16C BMI1 BMI2 Boost 2.0	MMX SSE SSE2 SSE3 SSSE3 SSE4.2 AVX AVX2 EIST Intel 64 XD bit VT-x VT-d HTT AES-NI TSX TXT CLMUL FMA3 F16C BMI1 BMI2 vPro Boost 2.0

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