Side by side comparison and review of Intel Core i7 7820X X-series (7th Gen) and Intel Core i5 7640X X-series (7th Gen). Compare overall performance, core and thread counts, cache memory, speed, power efficiency, dimensions, socket compatibility and other key specifications and features to simplify the choice of your perfect CPU. Our goal is to make it easier for you to decide on the processor that will best meet your expectations by revealing the main differences between the products.
| GENERAL | Intel Core i7 7820X X-series (7th Gen) | Intel Core i5 7640X X-series (7th Gen) |
|---|
| Product Type | Processor | Processor |
|---|
| PROCESSOR | Intel Core i7 7820X X-series (7th Gen) | Intel Core i5 7640X X-series (7th Gen) |
|---|
| Type | Intel Core i7 7820X X-series (7th Gen) | Intel Core i5 7640X X-series (7th Gen) |
|---|
| ARCHITECTURE |
|---|
| Processor Qty | 1 | 1 |
|---|---|---|
| Compatible Processor Socket | LGA2066 Socket | LGA2066 Socket |
| Manufacturing Process | 14 nm | 14 nm |
| Thermal Design Power | 140 W | 112 W |
| PCI Express Revision | 3.0 | 3.0 |
| PCI Express Configurations | - | 1x16, 2x8, 1x8+2x4 |
| PCI Express Lanes Qty | 28 | 16 |
| Architecture Features | Enhanced SpeedStep technology, Hyper-Threading Technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel Turbo Boost Technology 2.0, Intel AES New Instructions (AES-NI), Intel Virtualization Technology for Directed I/O (VT-d), Intel Advanced Vector Extensions 2 (AVX2.0), Intel Turbo Boost Max Technology 3.0, Intel Optane Memory Supported, Intel Advanced Vector Extensions 512 (AVX-512) | Intel Virtualization Technology, Intel 64 Technology, streaming SIMD extensions 4.1, streaming SIMD extensions 4.2, Intel Turbo Boost Technology 2.0, Intel AES New Instructions (AES-NI), Intel Virtualization Technology for Directed I/O (VT-d), Intel Advanced Vector Extensions 2 (AVX2.0), Intel Optane Memory Supported |
| PERFORMANCE |
|---|
| Number of Cores | 8-core | Quad-Core |
|---|---|---|
| Number of Threads | 16 threads | 4 threads |
| Clock Speed (Frequency) | 3.6 GHz | 4 GHz |
| Max Turbo Speed | 4.3 GHz | 4.2 GHz |
| CACHE MEMORY |
|---|
| Cache | 11 MB | 6 MB |
|---|---|---|
| Cache Memory Details | L3 - Smart Cache - 11 MB | L3 - Smart Cache - 6 MB |
| MISCELLANEOUS | Intel Core i7 7820X X-series (7th Gen) | Intel Core i5 7640X X-series (7th Gen) |
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| Service & Support | Limited warranty - 3 years | Limited warranty - 3 years |
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