Core i7-820QM vs Core 2 Duo T9900

Aggregate performance score

Core 2 Duo T9900
2009
2 cores / 2 threads, 35 Watt
0.75
Core i7-820QM
2009
4 cores / 8 threads, 45 Watt
1.12
+49.3%

Core i7-820QM outperforms Core 2 Duo T9900 by a considerable 49% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo T9900 and Core i7-820QM processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking26692408
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core 2 DuoIntel Core i7
Power efficiency2.032.36
Architecture codenamePenryn (2008−2011)Clarksfield (2009−2010)
Release date2 June 2009 (15 years ago)23 September 2009 (15 years ago)
Launch price (MSRP)$530$546

Detailed specifications

Core 2 Duo T9900 and Core i7-820QM 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)4 (Quad-Core)
Threads28
Base clock speed3.06 GHz1.73 GHz
Boost clock speed0.07 GHz3.06 GHz
Bus typeno dataDMI 1.0
Bus rate1066 MHz2.5 GT/s
Multiplierno data13
L1 cache64 KB (per core)64 KB (per core)
L2 cache6 MB (shared)256 KB (per core)
L3 cache6 MB L2 Cache8 MB (shared)
Chip lithography45 nm45 nm
Die size107 mm2296 mm2
Maximum core temperature105 °C100 °C
Number of transistors410 million774 million
64 bit support++
Windows 11 compatibility--
VID voltage range1.05V-1.2125Vno data

Compatibility

Information on Core 2 Duo T9900 and Core i7-820QM 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 (Uniprocessor)
SocketBGA479,PGA478FCPGA988,PGA988
Power consumption (TDP)35 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T9900 and Core i7-820QM. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.2
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology-1.0
Hyper-Threading Technology-+
Idle Statesno data+
Thermal Monitoring-+
Demand Based Switching-no data
PAEno data36 Bit

Security technologies

Core 2 Duo T9900 and Core i7-820QM technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo T9900 and Core i7-820QM are enumerated here.

VT-dno data+
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo T9900 and Core i7-820QM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR2, DDR3DDR3-1066, DDR3-1333
Maximum memory sizeno data8 GB
Max memory channelsno data2
Maximum memory bandwidthno data21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)None

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo T9900 and Core i7-820QM.

PCIe versionno data2
PCI Express lanesno data16

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 T9900 0.75
i7-820QM 1.12
+49.3%

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 T9900 1189
i7-820QM 1775
+49.3%

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.

Core 2 Duo T9900 399
+4.5%
i7-820QM 382

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.

Core 2 Duo T9900 641
i7-820QM 978
+52.6%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Core 2 Duo T9900 3538
+8.1%
i7-820QM 3272

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Core 2 Duo T9900 7094
i7-820QM 8559
+20.7%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Core 2 Duo T9900 2787
i7-820QM 3149
+13%

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Core 2 Duo T9900 25.1
+67.5%
i7-820QM 42.04

Gaming performance

Pros & cons summary


Performance score 0.75 1.12
Recency 2 June 2009 23 September 2009
Physical cores 2 4
Threads 2 8
Power consumption (TDP) 35 Watt 45 Watt

Core 2 Duo T9900 has 28.6% lower power consumption.

i7-820QM, on the other hand, has a 49.3% higher aggregate performance score, an age advantage of 3 months, and 100% more physical cores and 300% more threads.

The Core i7-820QM is our recommended choice as it beats the Core 2 Duo T9900 in performance tests.


Should you still have questions on choice between Core 2 Duo T9900 and Core i7-820QM, ask them in Comments section, and we shall answer.

Vote for your favorite

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Intel Core 2 Duo T9900
Core 2 Duo T9900
Intel Core i7-820QM
Core i7-820QM

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Community ratings

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


4.3 136 votes

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Questions & comments

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