Ultra 9 285 vs i9-9900KS

Primary details

Comparing Core i9-9900KS and Core Ultra 9 285 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	634	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	10.84	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i9	no data
Power efficiency	9.08	no data
Architecture codename	Coffee Lake-R (2018−2019)	Arrow Lake-S (2024−2025)
Release date	28 October 2019 (5 years ago)	January 2025
Launch price (MSRP)	$513	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-9900KS and Core Ultra 9 285 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	8 (Octa-Core)	24 (Tetracosa-Core)
Threads	16	24
Base clock speed	4 GHz	2.5 GHz
Boost clock speed	5 GHz	5.6 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	40	no data
L1 cache	64 KB (per core)	112 KB (per core)
L2 cache	256 KB (per core)	3 MB (per core)
L3 cache	16 MB (shared)	36 MB (shared)
Chip lithography	14 nm	3 nm
Die size	180 mm2	243 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	17,800 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-9900KS and Core Ultra 9 285 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 (Uniprocessor)	1
Socket	FCLGA1151	1851
Power consumption (TDP)	127 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900KS and Core Ultra 9 285. 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	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
SIPP	+	-

Security technologies

Core i9-9900KS and Core Ultra 9 285 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900KS and Core Ultra 9 285 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 i9-9900KS and Core Ultra 9 285. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5 Depends on motherboard
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 630	Arc Xe2 Graphics 64EU
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
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 i9-9900KS and Core Ultra 9 285 integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Core i9-9900KS and Core Ultra 9 285 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096 x 2304@24Hz	no data
Max resolution over eDP	4096 x 2304@60Hz	no data
Max resolution over DisplayPort	4096 x 2304@60Hz	no data

Graphics API support

APIs supported by Core i9-9900KS and Core Ultra 9 285 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i9-9900KS and Core Ultra 9 285.

PCIe version	3.0	5.0
PCI Express lanes	16	20

Pros & cons summary

---

Physical cores	8	24
Threads	16	24
Chip lithography	14 nm	3 nm
Power consumption (TDP)	127 Watt	125 Watt

---

Should you still have questions on choice between Core i9-9900KS and Core Ultra 9 285, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---