In depth comparison and review of Intel Core i7 620M 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.
| GENERAL | Intel Core i7 620M | Intel Core i7 840QM |
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| Product Type | Processor (mobile) | Processor (mobile) |
|---|
| PROCESSOR | Intel Core i7 620M | Intel Core i7 840QM |
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| Type | Intel Core i7 620M | Intel Core i7 840QM |
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| ARCHITECTURE |
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| Processor Qty | 1 | 1 |
|---|---|---|
| Packaging Type | 1288-ball BGA | 988-pin Micro FCPGA |
| Manufacturing Process | 32 nm | 45 nm |
| Thermal Design Power | 35 W | 45 W |
| Thermal Specification | 105 °C | 100 °C |
| PCI Express Revision | 2.0 | 2.0 |
| PCI Express Configurations | 1x16 | 1x16, 2x8 |
| PCI Express Lanes Qty | 16 | 16 |
| Architecture Features | Enhanced SpeedStep technology, Hyper-Threading Technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel Turbo Boost Technology, Intel 64 Technology, Intel Trusted Execution Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel Fast Memory Access, Intel Flex Memory Access, Intel AES New Instructions (AES-NI), Thermal Monitoring Technologies, Intel Virtualization Technology for Directed I/O (VT-d), Intel vPro Technology, Idle States, Intel VT-x with Extended Page Tables (EPT) | 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 | Dual-Core | Quad-Core |
|---|---|---|
| Number of Threads | 4 threads | 8 threads |
| Clock Speed (Frequency) | 2.66 GHz | 1.86 GHz |
| Max Turbo Speed | 3.33 GHz | 3.2 GHz |
| Bus Speed | 667 MHz | - |
| 64-bit Computing | Yes | Yes |
| CACHE MEMORY |
|---|
| Cache | 4 MB | 8 MB |
|---|---|---|
| Cache Memory Details | Smart Cache - 4 MB | L3 - 8 MB |
| Installed Size | 4 MB | 8 MB |
| RAM |
|---|
| Installed RAM Size | 4 MB | - |
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| INTEGRATED GRAPHICS (GPU) | Intel Core i7 620M | Intel Core i7 840QM |
|---|
| Type | Intel HD Graphics with Dynamic Frequency | - |
|---|---|---|
| Base Frequency | 500 MHz | - |
| Max Dynamic Frequency | 766 MHz | - |
| Features | Dual Display Capable, Intel FDI, Intel Clear Video Technology, Intel Clear Video HD Technology | - |
| EXPANSION & CONNECTIVITY | Intel Core i7 620M | Intel Core i7 840QM |
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| Compatible Slots | 1 x processor | 1 x processor |
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| MISCELLANEOUS | Intel Core i7 620M | Intel Core i7 840QM |
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| Service & Support | - | Limited warranty - 3 years |
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