Intel Core i7-3820 vs Intel Core i7-3820QM Full Specs
4 Cores 8 Threads 3.6GHz | 4 Cores 8 Threads 2.7GHz |
TDP 130W | TDP 45W |
Bandwidth 51.2GB/s DDR3 | Bandwidth 25.6GB/s · |
iGPU - | iGPU |
·· - | ·· 320 GFLOPSFP32 |
Socket | Socket |
4 Cores | 4 Cores |
8 Threads | 8 Threads |
Base Clock 3.6GHz | Base Clock 2.7GHz |
Boost Clock 3.8GHz | Boost Clock 3.7GHz |
Overclocking Locked | Overclocking Locked |
L1i 32KB | L1i 32KB |
L1d 32KB | L1d 32KB |
L2 256KB | L2 256KB |
L3 10MB | L3 8MB |
Type DDR3 | Type · |
Max Memory 64GB | Max Memory 32GB |
ECC No | ECC No |
Channels 4 | Channels 2 |
Bus Width 256-bit | Bus Width 128-bit |
Speed 1600MT/s | Speed 1600MT/s |
Bandwidth 51.2GB/s | Bandwidth 25.6GB/s |
Bandwidth Calculator Channels Transfer Rate ·· | Bandwidth Calculator Channels Transfer Rate ·· |
TDP 130W | TDP 45W |
Max Operating Temp - | Max Operating Temp 105°C Max |
T-Case 66.8°C Max | T-Case - |
Included Cooler 0 | Included Cooler - |
Bus Type DMI | Bus Type DMI |
Bus Config 4 lanes | Bus Config 4 lanes |
Bus Speed 5GT/s | Bus Speed 5GT/s |
Bus Bandwidth 2.5GB/s | Bus Bandwidth 2.5GB/s |
PCIe PCIe 2.0 x4020GB/sBandwidth | PCIe PCIe 3.0 x1615.8GB/sBandwidth |
iGPU - | iGPU |
Shaders - | Shaders 128 |
Boost Clock - | Boost Clock 1.25GHz |
·· - | ·· 320 GFLOPSFP32 |
Manufacturer | Manufacturer |
ISA x86-64 | ISA x86-64 |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename Sandy Bridge-E Sandy Bridge-EP-4Die Sandy Bridge-EP-4CVariant | Codename Gladden Ivy Bridge-HE-4Die Ivy Bridge-4C-GT2Variant |
Market Segment Workstation | Market Segment Laptop |
Release Date Feb 1, 2012 | Release Date Apr 1, 2012 |
Foundry Intel | Foundry Intel |
Fabrication Node 32nm | Fabrication Node 22nm |
Die Size 294mm² | Die Size 160mm² |
Transistor Count 1.3 Billion | Transistor Count 1.4 Billion |
Transistor Density 4 MTr/mm² | Transistor Density 9 MTr/mm² |
Laptops - | Laptops |
