Ultra 5 245KF vs i7-7800X

VS

Aggregate performance score

Core i7-7800X
2017
6 cores / 12 threads, 140 Watt
8.11
Core Ultra 5 245KF
2024
14 cores / 14 threads, 125 Watt
27.54
+240%

Core Ultra 5 245KF outperforms Core i7-7800X by a whopping 240% based on our aggregate benchmark results.

Primary details

Comparing Core i7-7800X and Core Ultra 5 245KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking934176
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation3.3681.94
Market segmentDesktop processorDesktop processor
SeriesIntel Core i7no data
Power efficiency5.4520.74
Architecture codenameSkylake (server) (2017−2018)Arrow Lake-S (2024−2025)
Release date26 June 2017 (7 years ago)24 October 2024 (less than a year ago)
Launch price (MSRP)$383$294

Cost-effectiveness evaluation

Performance per price, higher is better.

Ultra 5 245KF has 2339% better value for money than i7-7800X.

Detailed specifications

Core i7-7800X and Core Ultra 5 245KF 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 cores6 (Hexa-Core)14 (Tetradeca-Core)
Threads1214
Base clock speed3.5 GHz4.2 GHz
Boost clock speed4 GHz5.2 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
Multiplier35no data
L1 cache64 KB (per core)112 KB (per core)
L2 cache1 MB (per core)3 MB (per core)
L3 cache8.25 MB (shared)24 MB (shared)
Chip lithography14 nm3 nm
Die sizeno data243 mm2
Maximum core temperature100 °Cno data
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data17,800 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Core i7-7800X and Core Ultra 5 245KF 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 configuration1 (Uniprocessor)1
SocketFCLGA20661851
Power consumption (TDP)140 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7800X and Core Ultra 5 245KF. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX++

Security technologies

Core i7-7800X and Core Ultra 5 245KF technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7800X and Core Ultra 5 245KF are enumerated here.

VT-d++
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7800X and Core Ultra 5 245KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2400DDR5
Maximum memory size128 GBno data
Max memory channels4no data
Maximum memory bandwidth85.33 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AN/A

Peripherals

Specifications and connection of peripherals supported by Core i7-7800X and Core Ultra 5 245KF.

PCIe version3.05.0
PCI Express lanes2820

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.

i7-7800X 8.11
Ultra 5 245KF 27.54
+240%

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.

i7-7800X 12883
Ultra 5 245KF 43751
+240%

Gaming performance

Pros & cons summary


Performance score 8.11 27.54
Recency 26 June 2017 24 October 2024
Physical cores 6 14
Threads 12 14
Chip lithography 14 nm 3 nm
Power consumption (TDP) 140 Watt 125 Watt

Ultra 5 245KF has a 239.6% higher aggregate performance score, an age advantage of 7 years, 133.3% more physical cores and 16.7% more threads, a 366.7% more advanced lithography process, and 12% lower power consumption.

The Core Ultra 5 245KF is our recommended choice as it beats the Core i7-7800X in performance tests.


Should you still have questions on choice between Core i7-7800X and Core Ultra 5 245KF, 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.


Intel Core i7-7800X
Core i7-7800X
Intel Core Ultra 5 245KF
Core Ultra 5 245KF

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Community ratings

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


3.9 185 votes

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Questions & comments

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