Core i7-620UM vs Core 2 Quad Q8400

#ad 
Buy on Amazon
Core 2 Extreme QX9650 Core 2 Extreme QX9770 Core 2 Extreme QX9775 Core 2 Quad Q8200 Core 2 Quad Q8300 Core 2 Quad Q8400 Core 2 Quad Q9300 Core 2 Quad Q9400 Core 2 Quad Q9450 Core 2 Quad Q9505 Core 2 Quad Q9550s Core 2 Quad Q9650
VS
Core i3-330M Core i3-350M Core i3-370M Core i3-380M Core i5-430M Core i5-460M Core i5-480M Core i5-520M Core i5-560M Core i7-620M Core i7-640M Pentium P6200

Aggregate performance score

Core 2 Quad Q8400
2009
4 cores / 4 threads, 95 Watt
1.30
+88.4%
Core i7-620UM
2010
2 cores / 4 threads, 18 Watt
0.69

Core 2 Quad Q8400 outperforms Core i7-620UM by an impressive 88% based on our aggregate benchmark results.

Contents

Core 2 Quad Q8400 Core 2 Quad Q8400
i7-620UM i7-620UM

Primary details

Comparing Core 2 Quad Q8400 and Core i7-620UM processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking22682715
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataIntel Core i7
Power efficiency1.303.63
Architecture codenameYorkfield (2007−2009)Arrandale (2010−2011)
Release date19 April 2009 (15 years ago)7 January 2010 (14 years ago)
Launch price (MSRP)no data$278

Detailed specifications

Core 2 Quad Q8400 and Core i7-620UM 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 cores4 (Quad-Core)2 (Dual-core)
Threads44
Base clock speed2.66 GHz1.06 GHz
Boost clock speed0.67 GHz2.13 GHz
Bus typeno dataDMI 1.0
Bus rate1333 MHz1 × 2.5 GT/s
Multiplierno data8
L1 cache64 KB (per core)64 KB (per core)
L2 cache4 MB (shared)256 KB (per core)
L3 cache0 KB4 MB (shared)
Chip lithography45 nm32 nm
Die size2x 82 mm281+114 mm2
Maximum core temperatureno data105 °C
Maximum case temperature (TCase)71 °Cno data
Number of transistors456 million382+177 Million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.3625Vno data

Compatibility

Information on Core 2 Quad Q8400 and Core i7-620UM 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)
SocketFCLGA775,LGA775BGA1288
Power consumption (TDP)95 Watt18 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Core i7-620UM. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2
AES-NI-+
FMA-+
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology-+
Hyper-Threading Technology-+
Idle States++
Thermal Monitoring++
Flex Memory Accessno data+
Demand Based Switching-no data
PAEno data36 Bit
FDIno data+
Fast Memory Accessno data+
FSB parity-no data

Security technologies

Core 2 Quad Q8400 and Core i7-620UM technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Core i7-620UM are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Core i7-620UM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR3-800
Maximum memory sizeno data8 GB
Max memory channelsno data2
Maximum memory bandwidthno data12.799 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardOn certain motherboards (Chipset feature)Intel® HD Graphics for Previous Generation Intel® Processors
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data500 MHz

Graphics interfaces

Available interfaces and connections of Core 2 Quad Q8400 and Core i7-620UM integrated GPUs.

Number of displays supportedno data2

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Core i7-620UM.

PCIe version2.02.0
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 Quad Q8400 1.30
+88.4%
i7-620UM 0.69

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 Quad Q8400 2067
+89.5%
i7-620UM 1091

Gaming performance

Pros & cons summary

Performance score 1.30 0.69
Recency 19 April 2009 7 January 2010
Physical cores 4 2
Chip lithography 45 nm 32 nm
Power consumption (TDP) 95 Watt 18 Watt

Core 2 Quad Q8400 has a 88.4% higher aggregate performance score, and 100% more physical cores.

i7-620UM, on the other hand, has an age advantage of 8 months, a 40.6% more advanced lithography process, and 427.8% lower power consumption.

The Core 2 Quad Q8400 is our recommended choice as it beats the Core i7-620UM in performance tests.

Note that Core 2 Quad Q8400 is a desktop processor while Core i7-620UM is a notebook one.

Should you still have questions on choice between Core 2 Quad Q8400 and Core i7-620UM, 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 Quad Q8400
Core 2 Quad Q8400
Intel Core i7-620UM
Core i7-620UM
Like
Like

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Core 2 Quad Q8400 Core 2 Quad Q8400
vs
A6-3650 A6 3650
i7-620UM Core i7 620UM
vs
E2-9010 E2 9010
Core 2 Quad Q8400 Core 2 Quad Q8400
vs
Phenom II X4 830 Phenom II X4 830
i3-2100 Core i3 2100
vs
Phenom X4 9750 (95W) Phenom X4 9750 (95W)
Celeron Dual-Core T3500 Celeron Dual Core T3500
vs
Atom N2600 Atom N2600
FX-4100 FX 4100
vs
Core 2 Duo E6850 Core 2 Duo E6850
Celeron E3300 Celeron E3300
vs
i3-1215U Core i3 1215U
i5-4430 Core i5 4430
vs
Ryzen 9 7940HS Ryzen 9 7940HS
i7-7740X Core i7 7740X
vs
i5-4460 Core i5 4460
E-300 E 300
vs
Atom D2550 Atom D2550
i5-3340M Core i5 3340M
vs
A4-4300M A4 4300M
Athlon 64 X2 3600+ Athlon 64 X2 3600+
vs
Celeron G5905 Celeron G5905
Xeon L5638 Xeon L5638
vs
i3-4160 Core i3 4160

Community ratings

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

4 1340 votes

Rate Core 2 Quad Q8400 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.1 12 votes

Rate Core i7-620UM on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core 2 Quad Q8400 or Core i7-620UM, agree or disagree with our judgements, or report an error or mismatch.