Intel Core i7-990X vs Intel Core i7-975 Full Specs
6 Cores | 4 Cores |
12 Threads | 8 Threads |
Base Clock 3.46GHz | Base Clock 3.33GHz |
Boost Clock 3.73GHz | Boost Clock 3.6GHz |
Overclocking Locked | Overclocking Locked |
L1i 32KB | L1i 32KB |
L1d 32KB | L1d 32KB |
L2 256KB | L2 256KB |
L3 12MB | L3 8MB |
Type DDR3 | Type DDR3 |
Max Memory 24GB | Max Memory 24GB |
ECC No | ECC No |
Channels 3 | Channels 3 |
Bus Width 192-bit | Bus Width 192-bit |
Speed 1066MT/s | Speed 1066MT/s |
Bandwidth 25.6GB/s | Bandwidth 25.6GB/s |
Bandwidth Calculator Channels Transfer Rate ·· | Bandwidth Calculator Channels Transfer Rate ·· |
TDP 130W | TDP 130W |
T-Case 67.9°C Max | T-Case 67.9°C Max |
Voltage Range - | Voltage Range - |
Included Cooler 1 | Included Cooler 1 |
Bus Type QPI | Bus Type QPI |
Bus Config 16-bit | Bus Config 16-bit |
Bus Speed 6.4GT/s | Bus Speed 6.4GT/s |
Bus Bandwidth 12.8GB/s | Bus Bandwidth 12.8GB/s |
Manufacturer | Manufacturer |
ISA x86-64 | ISA x86-64 |
Architecture | Architecture |
Family | Family |
Branding  | Branding  |
Codename Gulftown | Codename Bloomfield |
Market Segment Workstation | Market Segment Workstation |
Release Date Feb 1, 2011 | Release Date Jun 1, 2009 |
Foundry Intel | Foundry Intel |
Fabrication Node 32nm | Fabrication Node 45nm |
Die Size 240mm² | Die Size 263mm² |
Transistor Count 1.2 Billion | Transistor Count 731 Million |
Transistor Density 5 MTr/mm² | Transistor Density 3 MTr/mm² |
