Intel Core 2 Extreme X7900 vs Celeron 3855U

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Combined performance score

Celeron 3855U
0.83
+15.3%

Celeron 3855U outperforms Core 2 Extreme X7900 by 15% in our combined benchmark results.

General info

Comparing Celeron 3855U and Core 2 Extreme X7900 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking24412549
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel CeleronIntel Core 2 Extreme
Architecture codenameSkylake (2015−2016)Merom (2006−2008)
Release date15 August 2015 (8 years old)1 September 2007 (16 years old)
Launch price (MSRP)$107$851
Current price$315 (2.9x MSRP)$170 (0.2x MSRP)

Technical specs

Celeron 3855U and Core 2 Extreme X7900 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)2 (Dual-core)
Threads22
Base clock speed1.6 GHz2.8 GHz
Boost clock speed1.6 GHz2.8 GHz
Bus support4 GT/s800 MHz
L1 cache128 KB128 KB
L2 cache512 KB4 MB
L3 cache2 MB0 KB
Chip lithography14 nm65 nm
Die size98.57 mm210.3 mm × 9.57 mm143 mm2
Maximum core temperature100 °C100 °C
Number of transistors1750 Millionno data
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo
VID voltage rangeno data1.1V-1.375V

Compatibility

Information on Celeron 3855U and Core 2 Extreme X7900 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
SocketFCBGA1356PPGA478
Power consumption (TDP)15 Watt44 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 3855U and Core 2 Extreme X7900. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2no data
AES-NI+no data
Enhanced SpeedStep (EIST)++
My WiFi+no data
Turbo Boost Technology--
Hyper-Threading Technology--
TSX-no data
Idle States+-
Thermal Monitoring+no data
Flex Memory Access+no data
SIPP-no data
Smart Response+no data
Demand Based Switchingno data-
AMTno data+
FSB parityno data-
StatusDiscontinuedDiscontinued

Security technologies

Celeron 3855U and Core 2 Extreme X7900 technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Key+no data
MPX-no data
Identity Protection+no data
SGXYes with Intel® MEno data
OS Guard-no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 3855U and Core 2 Extreme X7900 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 3855U and Core 2 Extreme X7900. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-1866, DDR4-2133, LPDDR3-1600, LPDDR3-1866, DDR3L-1333, DDR3L-1600DDR1
Maximum memory size32 GBno data
Max memory channels2no data
Maximum memory bandwidth34.1 GB/sno data
ECC memory support-no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel HD Graphics 510no data
Max video memory32 GBno data
Quick Sync Video+no data
Clear Video HD+no data
Graphics max frequency900 MHzno data

Graphics interfaces

Available interfaces and connections of Celeron 3855U and Core 2 Extreme X7900 integrated GPUs.

Number of displays supported3no data
eDP+no data
DisplayPort+no data
HDMI+no data
DVI+no data

Graphics image quality

Maximum display resolutions supported by Celeron 3855U and Core 2 Extreme X7900 integrated GPUs, including resolutions over different interfaces.

4K resolution support+no data
Max resolution over HDMI 1.44096x2304@24Hzno data
Max resolution over eDP4096x2304@60Hzno data
Max resolution over DisplayPort4096x2304@60Hzno data
Max resolution over VGAN/Ano data

Graphics API support

APIs supported by Celeron 3855U and Core 2 Extreme X7900 integrated GPUs, sometimes API versions are included.

DirectX12no data
OpenGL4.4no data

Peripherals

Specifications and connection of peripherals supported by Celeron 3855U and Core 2 Extreme X7900.

PCIe version2.0no data
PCI Express lanes10no data

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.

Celeron 3855U 0.83
+15.3%
Core 2 Extreme X7900 0.72

Celeron 3855U outperforms Core 2 Extreme X7900 by 15% in our combined benchmark results.


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.

Benchmark coverage: 68%

Celeron 3855U 1274
+15.4%
Core 2 Extreme X7900 1104

Celeron 3855U outperforms Core 2 Extreme X7900 by 15% in Passmark.

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 42%

Celeron 3855U 379
Core 2 Extreme X7900 387
+2.1%

Core 2 Extreme X7900 outperforms Celeron 3855U by 2% in GeekBench 5 Single-Core.

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 42%

Celeron 3855U 686
+9.8%
Core 2 Extreme X7900 625

Celeron 3855U outperforms Core 2 Extreme X7900 by 10% in GeekBench 5 Multi-Core.

Gaming performance

Advantages and disadvantages


Performance score 0.83 0.72
Recency 15 August 2015 1 September 2007
Cost $107 $851
Chip lithography 14 nm 65 nm
Power consumption (TDP) 15 Watt 44 Watt

The Celeron 3855U is our recommended choice as it beats the Core 2 Extreme X7900 in performance tests.


Should you still have questions on choice between Celeron 3855U and Core 2 Extreme X7900, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Celeron 3855U
Celeron 3855U
Intel Core 2 Extreme X7900
Core 2 Extreme X7900

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