Intel Core 2 Quad Q8400 vs. Intel Core i7 840QM

CPU Comparison, Reviews and Tests
Intel Core 2 Quad Q8400
Intel Core i7 840QM

In depth comparison and review of Intel Core 2 Quad Q8400 and Intel Core i7 840QM. Compare dimensions, performance, cache memory, number of cores, clock speed, RAM, power efficiency and other important specifications and features to easily choose the right CPU for you. Our goal is to help you uncover differences between the products and find the processor that will best fit your needs.

CPUs Specifications Comparison

Intel Core 2 Quad Q8400 vs. Intel Core i7 840QM Benchmark Chart
GENERAL Intel Core 2 Quad Q8400 Intel Core i7 840QM
Product Type Processor Processor (mobile)
PROCESSOR Intel Core 2 Quad Q8400 Intel Core i7 840QM
Type Intel Core 2 Quad Q8400 Intel Core i7 840QM
ARCHITECTURE
Processor Qty 1 1
Packaging Type - 988-pin Micro FCPGA
Compatible Processor Socket LGA775 Socket -
Manufacturing Process 45 nm 45 nm
Thermal Design Power 95 W 45 W
Thermal Specification 71.4 °C 100 °C
PCI Express Revision - 2.0
PCI Express Configurations - 1x16, 2x8
PCI Express Lanes Qty - 16
Architecture Features Enhanced SpeedStep technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, Enhanced Halt State (C1E), Intel Thermal Monitor 2 Enhanced SpeedStep technology, Hyper-Threading Technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel Turbo Boost Technology, Intel 64 Technology, Intel Trusted Execution Technology, Enhanced Halt State (C1E), streaming SIMD extensions 4.2
PERFORMANCE
Number of Cores Quad-Core Quad-Core
Number of Threads - 8 threads
Clock Speed (Frequency) 2.66 GHz 1.86 GHz
Max Turbo Speed - 3.2 GHz
Bus Speed 1333 MHz -
64-bit Computing Yes Yes
CACHE MEMORY
Cache 4 MB 8 MB
Cache Memory Details L2 - 4 MB L3 - 8 MB
Installed Size 4 MB 8 MB
EXPANSION & CONNECTIVITY Intel Core 2 Quad Q8400 Intel Core i7 840QM
Compatible Slots 1 x processor - LGA775 Socket 1 x processor
MISCELLANEOUS Intel Core 2 Quad Q8400 Intel Core i7 840QM
Service & Support Limited warranty - 3 years Limited warranty - 3 years
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