i9-9900KS vs i5-5257U

VS

Aggregate performance score

Core i5-5257U
2015
2 cores / 4 threads, 28 Watt
1.77
Core i9-9900KS
2019
8 cores / 16 threads, 127 Watt
12.26
+593%

Core i9-9900KS outperforms Core i5-5257U by a whopping 593% based on our aggregate benchmark results.

Primary details

Comparing Core i5-5257U and Core i9-9900KS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2016622
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data10.37
Market segmentLaptopDesktop processor
SeriesIntel Core i5Intel Core i9
Power efficiency5.989.14
Architecture codenameBroadwell-U (2015)Coffee Lake-R (2018−2019)
Release date1 March 2015 (9 years ago)28 October 2019 (5 years ago)
Launch price (MSRP)$315$513

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i5-5257U and Core i9-9900KS 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 cores2 (Dual-core)8 (Octa-Core)
Threads416
Base clock speed2.7 GHz4 GHz
Boost clock speed3.1 GHz5 GHz
Bus typeno dataDMI 3.0
Bus rate5 GT/s4 × 8 GT/s
Multiplierno data40
L1 cache64K (per core)64 KB (per core)
L2 cache256K (per core)256 KB (per core)
L3 cache3 MB (shared)16 MB (shared)
Chip lithography14 nm14 nm
Die size133 mm2180 mm2
Maximum core temperature105 °C100 °C
Maximum case temperature (TCase)105 °C72 °C
Number of transistors1900 Millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+

Compatibility

Information on Core i5-5257U and Core i9-9900KS 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 configuration11 (Uniprocessor)
SocketFCBGA1168FCLGA1151
Power consumption (TDP)28 Watt127 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-5257U and Core i9-9900KS. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX-+
Idle States++
Thermal Monitoring++
Flex Memory Access+no data
SIPP-+
Smart Response+no data
FDI+no data
Fast Memory Access+no data

Security technologies

Core i5-5257U and Core i9-9900KS technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Key++
MPX-+
Identity Protection++
SGXno dataYes with Intel® ME
OS Guard++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-5257U and Core i9-9900KS are enumerated here.

AMD-V++
VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-5257U and Core i9-9900KS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4
Maximum memory size16 GB128 GB
Max memory channels22
Maximum memory bandwidth25.6 GB/s42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel Iris Graphics 6100Intel UHD Graphics 630
Max video memory16 GB64 GB
Quick Sync Video++
Clear Video++
Clear Video HD++
Graphics max frequency1.05 GHz1.2 GHz
InTru 3D++

Graphics interfaces

Available interfaces and connections of Core i5-5257U and Core i9-9900KS integrated GPUs.

Number of displays supported33
eDP+no data
DisplayPort+-
HDMI+-

Graphics image quality

Maximum display resolutions supported by Core i5-5257U and Core i9-9900KS integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.42560X1600@60Hz4096 x 2304@24Hz
Max resolution over eDPno data4096 x 2304@60Hz
Max resolution over DisplayPort3840x2160@60Hz4096 x 2304@60Hz

Graphics API support

APIs supported by Core i5-5257U and Core i9-9900KS integrated GPUs, sometimes API versions are included.

DirectX11.2/1212
OpenGL4.34.5

Peripherals

Specifications and connection of peripherals supported by Core i5-5257U and Core i9-9900KS.

PCIe version2.03.0
PCI Express lanes1216

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


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.

i5-5257U 1.77
i9-9900KS 12.26
+593%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i5-5257U 2813
i9-9900KS 19470
+592%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i5-5257U 900
i9-9900KS 1812
+101%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i5-5257U 1710
i9-9900KS 8638
+405%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i5-5257U 4825
i9-9900KS 8183
+69.6%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i5-5257U 10674
i9-9900KS 51779
+385%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i5-5257U 4190
i9-9900KS 14884
+255%

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

i5-5257U 3
i9-9900KS 23
+577%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

i5-5257U 316
i9-9900KS 2058
+551%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

i5-5257U 124
i9-9900KS 216
+74.2%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

i5-5257U 1.42
i9-9900KS 2.45
+72.5%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

i5-5257U 1.9
i9-9900KS 12.2
+539%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

i5-5257U 20
i9-9900KS 123
+507%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

i5-5257U 107
i9-9900KS 279
+160%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

i5-5257U 2608
i9-9900KS 8353
+220%

Gaming performance

Pros & cons summary


Performance score 1.77 12.26
Integrated graphics card 2.32 3.09
Recency 1 March 2015 28 October 2019
Physical cores 2 8
Threads 4 16
Power consumption (TDP) 28 Watt 127 Watt

i5-5257U has 353.6% lower power consumption.

i9-9900KS, on the other hand, has a 592.7% higher aggregate performance score, 33.2% faster integrated GPU, an age advantage of 4 years, and 300% more physical cores and 300% more threads.

The Core i9-9900KS is our recommended choice as it beats the Core i5-5257U in performance tests.

Be aware that Core i5-5257U is a notebook processor while Core i9-9900KS is a desktop one.


Should you still have questions on choice between Core i5-5257U and Core i9-9900KS, ask them in Comments section, and we shall answer.

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Intel Core i5-5257U
Core i5-5257U
Intel Core i9-9900KS
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Community ratings

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