Compare to most popular Processors
| Product name |  Intel Core 2 Extreme QX9650 |
 Intel Core 2 Quad Q6600 / 2.4 GHz processor |
 Intel Core 2 Duo E8400 / 3 GHz processor |
 Intel Core i7-965 Extreme Edition |
 Intel Core i7 920 (2.66GHz) |
| Price range | $1029-1245 from 12 stores |
$189-245 from 15 stores |
$164-219 from 13 stores |
$1011-1144 from 12 stores |
$293-373 from 13 stores |
| Review summary | The CPU market is due for a lot of upheaval over the next 12 months, so you might be wise to wait for a clearer picture before plunking down $1,000 or so on Intel's new Core 2 Extreme QX9650 quad-core desktop processor. But if you want to claim ownership of the fastest multicore CPU around today, look no further. | Info unavailable | Info unavailable | Thanks to an expensive new motherboard requirement, Intel's new Core i7 desktop processors will remain enthusiast and professional-level parts until more affordable complementary hardware comes out later next year. Speed never comes cheap, however, and if you're willing to spend for it now, you'll find yourself in possession of the fastest CPU on the market. | Info unavailable |
| Release date | October 28, 2007 | January 11, 2007 | January 24, 2008 | November 3, 2008 | November 25, 2008 |
| Basic Specs | |||||
| Product Description | Intel Core 2 Extreme QX9650 / 3 GHz Processor | Intel Core 2 Quad Q6600 / 2.4 GHz Processor | Intel Core 2 Duo E8400 / 3 GHz Processor | Intel Core i7 965 / 3.2 GHz Processor | Intel Core i7 920 / 2.66 GHz Processor |
| Product Type | Processor | Processor | Processor | Processor | Processor |
| Processor Type | Intel Core 2 Extreme QX9650 | Intel Core 2 Quad Q6600 | Intel Core 2 Duo E8400 | Intel Core i7 965 | Intel Core i7 920 |
| Multi-Core Technology | Quad-Core | Quad-Core | Dual-Core | Quad-Core | Quad-Core |
| 64-bit Computing | Yes | Yes | Yes | Yes | Yes |
| Compatible Processor Socket | LGA775 Socket | LGA775 Socket | LGA775 Socket | LGA1366 Socket | LGA1366 Socket |
| Processor Qty | 1 | 1 | 1 | 1 | 1 |
| Clock Speed | 3 GHz | 2.4 GHz | 3 GHz | 3.2 GHz | 2.66 GHz |
| Bus Speed | 1333 MHz | 1066 MHz | 1333 MHz | Info unavailable | Info unavailable |
| Manufacturing Process | 45 nm | 65 nm | 45 nm | 45 nm | 45 nm |
| Cache Memory | L2 cache Advanced Smart Cache - 12 MB | L2 cache Advanced Smart Cache - 8 MB ( 2 x 4MB (4MB per core pair) ) | L2 cache 6 MB | L3 cache Advanced Smart Cache - 8 MB | L3 cache Advanced Smart Cache - 8 MB |
| Features | Intel Advanced Digital Media Boost , Intel 64 Technology , Intel Wide Dynamic Execution , Enhanced SpeedStep technology , Streaming SIMD extensions 4 , Execute Disable Bit capability , Intel Virtualization Technology , Intel Advanced Smart Cache , Intel Smart Memory Access | Intel Advanced Digital Media Boost , Intel 64 Technology , Intel Wide Dynamic Execution , Enhanced SpeedStep technology , Execute Disable Bit capability , Intel Virtualization Technology , Intel Advanced Smart Cache , Intel Smart Memory Access | Enhanced Halt State (C1E) , Intel 64 Technology , Intel Thermal Monitor 2 , Intel Trusted Execution Technology , Enhanced SpeedStep technology , Execute Disable Bit capability , Intel Virtualization Technology | Hyper-Threading Technology , Enhanced Halt State (C1E) , Intel 64 Technology , Intel Thermal Monitor 2 , Enhanced SpeedStep technology , Execute Disable Bit capability , Intel Virtualization Technology | Hyper-Threading Technology , Enhanced Halt State (C1E) , Intel 64 Technology , Intel Thermal Monitor 2 , Enhanced SpeedStep technology , Execute Disable Bit capability , Intel Virtualization Technology |
| Compatible Slots | 1 x Processor - LGA775 Socket | 1 x Processor - LGA775 Socket | 1 x Processor - LGA775 Socket | 1 x Processor - LGA1366 Socket | 1 x Processor - LGA1366 Socket |
| Manufacturer Warranty | 3 years warranty | 3 years warranty | 3 years warranty | 3 years warranty | 3 years warranty |
| Product name | Intel Core 2 Extreme QX9650 | Intel Core 2 Quad Q6600 / 2.4 GHz processor | Intel Core 2 Duo E8400 / 3 GHz processor | Intel Core i7-965 Extreme Edition | Intel Core i7 920 (2.66GHz) |
| Price range | $1029-1245 from 12 stores | $189-245 from 15 stores | $164-219 from 13 stores | $1011-1144 from 12 stores | $293-373 from 13 stores |