Core Ultra 5 125U vs Core 2 Duo E8400

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Aggregate performance score

Core 2 Duo E8400
2008
2 cores / 2 threads, 65 Watt
0.73
Core Ultra 5 125U
2023
12 cores / 14 threads, 15 Watt
10.97
+1403%

Core Ultra 5 125U outperforms Core 2 Duo E8400 by a whopping 1403% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo E8400 and Core Ultra 5 125U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2685716
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataIntel Meteor Lake-U
Power efficiency1.0669.17
Architecture codenameWolfdale (2008−2010)Meteor Lake-P (2023)
Release date1 January 2008 (16 years ago)14 December 2023 (1 year ago)
Launch price (MSRP)no data$363

Detailed specifications

Core 2 Duo E8400 and Core Ultra 5 125U 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)12 (Dodeca-Core)
Threads214
Base clock speed3 GHz1.3 GHz
Boost clock speed3 GHz4.3 GHz
Bus rate1333 MHzno data
L1 cache64 KB (per core)112 KB (per core)
L2 cache6 MB (shared)2 MB (per core)
L3 cache0 KB12 MB (shared)
Chip lithography45 nmIntel 4 nm
Die size104 mm2no data
Maximum core temperatureno data110 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistors410 millionno data
64 bit support++
Windows 11 compatibility-no data
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Duo E8400 and Core Ultra 5 125U 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
SocketLGA775FCBGA2049
Power consumption (TDP)65 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E8400 and Core Ultra 5 125U. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI-+
AVX-+
vProno data+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology-no data
Hyper-Threading Technology-+
TSX-+
Idle States+no data
Thermal Monitoring++
Flex Memory Accessno data+
Demand Based Switching-no data
Turbo Boost Max 3.0no data-
FSB parity-no data
Deep Learning Boost-+
Supported AI Software Frameworks-OpenVINO™, WindowsML, ONNX RT

Security technologies

Core 2 Duo E8400 and Core Ultra 5 125U technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Keyno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E8400 and Core Ultra 5 125U are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Core Ultra 5 125U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR5
Maximum memory sizeno data96 GB
Max memory channelsno data2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)Intel® Graphics
Quick Sync Video-+
Graphics max frequencyno data1.85 GHz

Graphics interfaces

Available interfaces and connections of Core 2 Duo E8400 and Core Ultra 5 125U integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by Core 2 Duo E8400 and Core Ultra 5 125U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)
Max resolution over eDPno data3840x2400 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core 2 Duo E8400 and Core Ultra 5 125U integrated GPUs, sometimes API versions are included.

DirectXno data12.2
OpenGLno data4.6

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E8400 and Core Ultra 5 125U.

PCIe version2.04.0
PCI Express lanesno data12
PCI supportno data4.0

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.

Core 2 Duo E8400 0.73
Ultra 5 125U 10.97
+1403%

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.

Core 2 Duo E8400 1165
Ultra 5 125U 17428
+1396%

Gaming performance

Pros & cons summary


Performance score 0.73 10.97
Recency 1 January 2008 14 December 2023
Physical cores 2 12
Threads 2 14
Power consumption (TDP) 65 Watt 15 Watt

Ultra 5 125U has a 1402.7% higher aggregate performance score, an age advantage of 15 years, 500% more physical cores and 600% more threads, and 333.3% lower power consumption.

The Core Ultra 5 125U is our recommended choice as it beats the Core 2 Duo E8400 in performance tests.

Note that Core 2 Duo E8400 is a desktop processor while Core Ultra 5 125U is a notebook one.


Should you still have questions on choice between Core 2 Duo E8400 and Core Ultra 5 125U, ask them in Comments section, and we shall answer.

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Intel Core 2 Duo E8400
Core 2 Duo E8400
Intel Core Ultra 5 125U
Core Ultra 5 125U

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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 Core 2 Duo E8400 or Core Ultra 5 125U, agree or disagree with our judgements, or report an error or mismatch.