Core i7-1255U vs Core 2 Duo E6850

VS

Aggregate performance score

Core 2 Duo E6850
2007
2 cores / 2 threads, 65 Watt
0.72
Core i7-1255U
2022
10 cores / 12 threads, 15 Watt
8.53
+1085%

Core i7-1255U outperforms Core 2 Duo E6850 by a whopping 1085% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo (Desktop) E6850 and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2701896
Place by popularitynot in top-10074
Market segmentDesktop processorLaptop
SeriesCore 2 Duo (Desktop)Intel Alder Lake-M
Power efficiency1.0553.78
Architecture codenameConroe (2006−2007)Alder Lake-U (2022)
Release dateno data23 February 2022 (2 years ago)

Detailed specifications

Core 2 Duo (Desktop) E6850 and Core i7-1255U 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)10 (Deca-Core)
Threads212
Base clock speedno data1.7 GHz
Boost clock speed3 GHz4.7 GHz
Bus rate1333 MHzno data
L1 cache64 KB80K (per core)
L2 cache4 MB1.25 MB (per core)
L3 cache0 KB12 MB (shared)
Chip lithography65 nm10 nm
Die size143 mm2no data
Maximum core temperatureno data100 °C
Number of transistors291 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Core 2 Duo (Desktop) E6850 and Core i7-1255U 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
Socket775Intel BGA 1744
Power consumption (TDP)65 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo (Desktop) E6850 and Core i7-1255U. You'll probably need this information if you require some particular technology.

AES-NI-+
FMA-+
AVX-+
Enhanced SpeedStep (EIST)++
TSX-+

Security technologies

Core 2 Duo (Desktop) E6850 and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo (Desktop) E6850 and Core i7-1255U are enumerated here.

VT-dno data+
VT-xno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo (Desktop) E6850 and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR4, DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel Iris Xe Graphics G7 96EUs ( - 1250 MHz)

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo (Desktop) E6850 and Core i7-1255U.

PCIe versionno data4.0
PCI Express lanesno data20

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 E6850 0.72
i7-1255U 8.53
+1085%

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 E6850 1147
i7-1255U 13544
+1081%

Gaming performance

Pros & cons summary


Performance score 0.72 8.53
Physical cores 2 10
Threads 2 12
Chip lithography 65 nm 10 nm
Power consumption (TDP) 65 Watt 15 Watt

i7-1255U has a 1084.7% higher aggregate performance score, 400% more physical cores and 500% more threads, a 550% more advanced lithography process, and 333.3% lower power consumption.

The Core i7-1255U is our recommended choice as it beats the Core 2 Duo E6850 in performance tests.

Note that Core 2 Duo E6850 is a desktop processor while Core i7-1255U is a notebook one.


Should you still have questions on choice between Core 2 Duo E6850 and Core i7-1255U, 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 2 Duo E6850
Core 2 Duo E6850
Intel Core i7-1255U
Core i7-1255U

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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 E6850 or Core i7-1255U, agree or disagree with our judgements, or report an error or mismatch.