Intel Core i5-1235U vs Intel Core i7-6800K

Comparative analysis of Intel Core i5-1235U and Intel Core i7-6800K processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Graphics image quality, Graphics API support, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Core i5-1235U

Intel Core i7-6800K

Differences

Reasons to consider the Intel Core i5-1235U

CPU is newer: launch date 5 year(s) 9 month(s) later
4 more cores, run more applications at once: 10 vs 6
Around 22% higher clock speed: 4.40 GHz vs 3.60 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm vs 14 nm
4.2x more L1 cache, more data can be stored in the L1 cache for quick access later
8.3x more L2 cache, more data can be stored in the L2 cache for quick access later
9.3x lower typical power consumption: 15 Watt vs 140 Watt
Around 40% better performance in PassMark - Single thread mark: 3171 vs 2261
Around 22% better performance in PassMark - CPU mark: 13060 vs 10734

Specifications (specs)
Launch date	23 Feb 2022 vs May 2016
Number of cores	10 vs 6
Maximum frequency	4.40 GHz vs 3.60 GHz
Manufacturing process technology	7 nm vs 14 nm
L1 cache	800 KB vs 32 KB (per core)
L2 cache	12.5 MB vs 256 KB (per core)
Thermal Design Power (TDP)	15 Watt vs 140 Watt
Benchmarks
PassMark - Single thread mark	3171 vs 2261
PassMark - CPU mark	13060 vs 10734

Reasons to consider the Intel Core i7-6800K

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 25% more L3 cache; more data can be stored in the L3 cache for quick access later
2x more maximum memory size: 128 GB vs 64 GB

Unlocked	Unlocked vs Locked
L3 cache	15360 KB (shared) vs 12 MB
Maximum memory size	128 GB vs 64 GB

Compare benchmarks

CPU 1: Intel Core i5-1235U
CPU 2: Intel Core i7-6800K

PassMark - Single thread mark

CPU 1

CPU 2

3171

2261

PassMark - CPU mark

CPU 1

CPU 2

13060

10734

Name	Intel Core i5-1235U	Intel Core i7-6800K
PassMark - Single thread mark	3171	2261
PassMark - CPU mark	13060	10734
Geekbench 4 - Single Core		918
Geekbench 4 - Multi-Core		5410
3DMark Fire Strike - Physics Score		3686
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		7.629
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		89.35
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.985
CompuBench 1.5 Desktop - Video Composition (Frames/s)		3.774
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		10.121

Compare specifications (specs)

	Intel Core i5-1235U	Intel Core i7-6800K
Essentials
Architecture codename	Alder Lake	Broadwell E
Launch date	23 Feb 2022	May 2016
Launch price (MSRP)	$340	$345
Place in performance rating	589	1791
Processor Number	i5-1235U	i7-6800K
Series	12th Generation Intel Core i5 Processors	Intel® Core™ X-series Processors
Vertical segment	Mobile	Desktop
Price now		$419.99
Status		Discontinued
Value for money (0-100)		9.53
Performance
64 bit support
L1 cache	800 KB	32 KB (per core)
L2 cache	12.5 MB	256 KB (per core)
L3 cache	12 MB	15360 KB (shared)
Manufacturing process technology	7 nm	14 nm
Maximum core temperature	100°C
Maximum frequency	4.40 GHz	3.60 GHz
Number of cores	10	6
Number of threads	12	12
Base frequency		3.40 GHz
Maximum case temperature (TCase)		72 °C
Unlocked
Memory
Max memory channels	2	4
Maximum memory size	64 GB	128 GB
Supported memory types	Up to DDR5 4800 MT/s Up to DDR4 3200 MT/s Up to LPDDR5 5200 MT/s Up to LPDDR4x 4267 MT/s	DDR4 2400/2133
Graphics
Device ID	0x46A8
Execution Units	80
Graphics max dynamic frequency	1.20 GHz
Intel® Quick Sync Video
Processor graphics	Intel Iris Xe Graphics eligible	None
Graphics interfaces
Number of displays supported	4
Graphics image quality
Max resolution over DisplayPort	7680 x 4320 @ 60Hz
Max resolution over eDP	4096 x 2304 @ 120Hz
Graphics API support
DirectX	12.1
OpenGL	4.6
Compatibility
Max number of CPUs in a configuration	1	1
Package Size	50 x 25
Sockets supported	FCBGA1744	FCLGA2011-3
Thermal Design Power (TDP)	15 Watt	140 Watt
Low Halogen Options Available
Peripherals
Max number of PCIe lanes	20	28
PCI Express revision		3.0
Scalability		1S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Secure Boot
Advanced Technologies
Instruction set extensions	Intel SSE4.1, Intel SSE4.2, Intel AVX2
Intel® AES New Instructions
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Volume Management Device (VMD)
Speed Shift technology
Thermal Monitoring
Enhanced Intel SpeedStep® technology
Idle States
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® Smart Response technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Turbo Boost Max 3.0
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)