Overview
The Intel® Core™ i7-800 processor series has transitioned to the new Intel® P55 Express Chipset which is equipped with a new socket providing enhanced performance at a lower cost. These changes enable you to achieve an unparalleled balance of value and performance for your customers.
What's changing in the new platform
- New LGA 1156 socket
- Two Intel® Core™ i7-800 processors
(Intel® Core™ i7-870 processor, Intel® Core™ i7-860 processor) - Four Intel® Desktop Boards (DP55KG, DP55SB, DP55WG, DP55WB) with the Intel® P55 Express Chipset
Key benefits
- Increased performance with Intel® Turbo Boost Technology1
- Better performance on highly threaded apps with the multi-core, multi-threaded power of Intel® Hyper-Threading Technology2
- Lower platform cost
- Lower power usage
- Microsoft Windows* 7 ready
The differences between the LGA1366 socket (socket B) and the new LGA1156 socket (socket H) are summarized in the following comparison tables. You can print out the comparison sheet and check compatibility on the go.
Intel® Core™ i7 and i5 processors in the new LGA1156 package
LGA1156 (Socket-H) supports the latest release of Intel® Core™ i7-800 and i5-700 series processors (Lynnfield) and Intel® P55 Express Chipset based on desktop boards
- These products deliver intelligent performance for faster multi-tasking, digital media creation, and gaming
| Product Number | Cores/Threads | GHz | Max Turbo GHz° | Cache | Memory Speed (MHz) | Product Code |
| i7-870 | 4/8 | 2.93 | 3.60 | 8MB | 1333 | BX80605I7870 |
| i7-860 | 4/8 | 2.80 | 3.46 | 8MB | 1333 | BX80605I7860 |
| i5-750 | 4/4 | 2.66 | 3.20 | 8MB | 1333 | BX80605I5750 |
| °Intel® Turbo Boost Technology performance varies depending on hardware, software, and overall system configuration. See www.intel.com/technology/turboboost for more information. | ||||||
Intel® Core™ i7 processor in the LGA1366 package
LGA1366 (Socket-B) supports the Intel® Core™ i7-900 series processors (Bloomfield) and is found on Intel® X58 Express Chipset-based desktop boards
- The best choice for extreme gaming and enthusiast platforms
| Product Number | Cores/Threads | GHz | Max Turbo GHz° | Cache | Memory Speed (MHz) | Product Code |
| i7-975 | 4/8 | 3.33 | Yes | 8MB | 1066 | BX80601975 |
| i7-965 | 4/8 | 3.20 | Yes | 8MB | 1066 | BX80601965 |
| i7-950 | 4/8 | 3.06 | Yes | 8MB | 1066 | BX80601950 |
| i7-940 | 4/8 | 2.93 | Yes | 8MB | 1066 | BX80601940 |
| i7-920 | 4/8 | 2.66 | Yes | 8MB | 1066 | BX80601920 |
| °Intel® Turbo Boost Technology performance varies depending on hardware, software, and overall system configuration. See www.intel.com/technology/turboboost for more information. | ||||||
Intel® Desktop Boards with the new LGA1156 socket
| Product Number | Series/Form Factor |
Memory (2-channel) |
Gfx (PCIe* 2.0) | SATA/ eSATA |
Over-clocking Level |
Product Code/MM# |
| DP55KG | Extreme/ATX | 4 DDR3- 1600 |
1x16 or 2x8 | 8/2 | Extreme | BOXDP55KG /901527 |
| DP55SB | Extreme/ìATX | 4 DDR3- 1600 |
1x16 or 2x8 | 6/1 | Extreme | BOXDP55SB /901531 |
| DP55WG | Media/ATX | 4 DDR3- 1600 |
1x16 or 2x8 | 6/0 | Some | BOXDP55WG /901533 |
| DP55WB | Media/ìATX | 4 DDR3- 1333 |
1x16 | 6/0 | Low | BOXDP55WB /902435 |
Intel® Desktop Board with the LGA1366 socket
| Product Number | Series/Form Factor |
Memory (2-channel) |
Gfx (PCIe* 2.0) | SATA/ eSATA |
Over-clocking Level |
Product Code/MM# |
| DX58SO | Extreme/ATX | 4 DDR3-1600 | 2x16 | 6/2 | Extreme | BOXDX5850/ 899068 |
1Intel® Turbo Boost Technology requires a PC with a processor with Intel Turbo Boost Technology capability. Intel Turbo Boost Technology performance varies depending on hardware, software, and overall system configuration. Check with your PC manufacturer on whether your system delivers Intel Turbo Boost Technology. See www.intel.com/technology/turboboost for more information.
2Intel® Hyper-Threading Technology (Intel® HT Technology) requires a computer system with a processor supporting Intel HT technology and Intel HT technology-enabled chipset, BIOS, and operating system. Performance will vary depending on the specific hardware and software you use. For more information including details on which processors support Intel HT Technology, see www.intel.com/info/hyperthreading.