Xeon Platinum 8558U vs i9-9900KS

Primary details

Comparing Core i9-9900KS and Xeon Platinum 8558U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	623	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	10.38	no data
Market segment	Desktop processor	Server
Series	Intel Core i9	no data
Power efficiency	9.14	no data
Architecture codename	Coffee Lake-R (2018−2019)	Emerald Rapids (2023)
Release date	28 October 2019 (5 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$513	$3,720

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-9900KS and Xeon Platinum 8558U 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)	48 (Octatetraconta-Core)
Threads	16	96
Base clock speed	4 GHz	2 GHz
Boost clock speed	5 GHz	4 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)	80 KB (per core)
L2 cache	256 KB (per core)	2 MB (per core)
L3 cache	16 MB (shared)	260 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	180 mm2	2x 763 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	78 °C
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-9900KS and Xeon Platinum 8558U 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	FCLGA4677
Power consumption (TDP)	127 Watt	300 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900KS and Xeon Platinum 8558U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
SIPP	+	-
Deep Learning Boost	-	+

Security technologies

Core i9-9900KS and Xeon Platinum 8558U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900KS and Xeon Platinum 8558U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-9900KS and Xeon Platinum 8558U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5 @ 4800 MT/s (1 DPC)
Maximum memory size	128 GB	4 TB
Max memory channels	2	8
Maximum memory bandwidth	42.671 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 630	N/A
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 Xeon Platinum 8558U integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Core i9-9900KS and Xeon Platinum 8558U 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 Xeon Platinum 8558U 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 Xeon Platinum 8558U.

PCIe version	3.0	5.0
PCI Express lanes	16	80

Pros & cons summary

---

Recency	28 October 2019	14 December 2023
Physical cores	8	48
Threads	16	96
Power consumption (TDP)	127 Watt	300 Watt

---

Should you still have questions on choice between Core i9-9900KS and Xeon Platinum 8558U, 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.

---