Ultra 9 285K vs Xeon Platinum 8256

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Aggregate performance score

Xeon Platinum 8256
2018
4 cores / 8 threads, 105 Watt
10.57
Core Ultra 9 285K
2024
24 cores / 24 threads, 125 Watt
43.06
+307%

Core Ultra 9 285K outperforms Xeon Platinum 8256 by a whopping 307% based on our aggregate benchmark results.

Primary details

Comparing Xeon Platinum 8256 and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking74153
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.6974.28
Market segmentServerDesktop processor
SeriesIntel Xeon Platinumno data
Power efficiency9.4832.43
Architecture codenameCascade Lake-SP (2018)Arrow Lake-S (2024−2025)
Release date11 December 2018 (6 years ago)24 October 2024 (less than a year ago)
Launch price (MSRP)$7,007$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Ultra 9 285K has 4295% better value for money than Xeon Platinum 8256.

Detailed specifications

Xeon Platinum 8256 and Core Ultra 9 285K 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 cores4 (Quad-Core)24 (Tetracosa-Core)
Threads824
Base clock speed3.8 GHz3.7 GHz
Boost clock speed3.9 GHz5.7 GHz
Bus rateno data250 MHz
Multiplier38no data
L1 cache64 KB (per core)112 KB (per core)
L2 cache1 MB (per core)3 MB (per core)
L3 cache16.5 MB (shared)36 MB (shared)
Chip lithography14 nm3 nm
Die sizeno data243 mm2
Maximum core temperature72 °Cno data
Number of transistors8,000 million17,800 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier-+

Compatibility

Information on Xeon Platinum 8256 and Core Ultra 9 285K 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 configuration8 (Multiprocessor)1
SocketFCLGA36471851
Power consumption (TDP)105 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 8256 and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX++
vPro++
Enhanced SpeedStep (EIST)++
Speed Shift+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX++
Turbo Boost Max 3.0-no data
Deep Learning Boost+-

Security technologies

Xeon Platinum 8256 and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 8256 and Core Ultra 9 285K are enumerated here.

VT-d++
VT-x++
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8256 and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2933DDR5 Depends on motherboard
Maximum memory size1 TBno data
Max memory channels6no data
Maximum memory bandwidth140.8 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AArc Xe-LPG Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Xeon Platinum 8256 and Core Ultra 9 285K.

PCIe version3.05.0
PCI Express lanes4820

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.

Xeon Platinum 8256 10.57
Ultra 9 285K 43.06
+307%

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.

Xeon Platinum 8256 16787
Ultra 9 285K 68403
+307%

Gaming performance

Pros & cons summary


Performance score 10.57 43.06
Recency 11 December 2018 24 October 2024
Physical cores 4 24
Threads 8 24
Chip lithography 14 nm 3 nm
Power consumption (TDP) 105 Watt 125 Watt

Xeon Platinum 8256 has 19% lower power consumption.

Ultra 9 285K, on the other hand, has a 307.4% higher aggregate performance score, an age advantage of 5 years, 500% more physical cores and 200% more threads, and a 366.7% more advanced lithography process.

The Core Ultra 9 285K is our recommended choice as it beats the Xeon Platinum 8256 in performance tests.

Be aware that Xeon Platinum 8256 is a server/workstation processor while Core Ultra 9 285K is a desktop one.


Should you still have questions on choice between Xeon Platinum 8256 and Core Ultra 9 285K, ask them in Comments section, and we shall answer.

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Intel Xeon Platinum 8256
Xeon Platinum 8256
Intel Core Ultra 9 285K
Core Ultra 9 285K

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

Here you can ask a question about Xeon Platinum 8256 or Core Ultra 9 285K, agree or disagree with our judgements, or report an error or mismatch.