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| Price | $1,027.95 | $1,110.95 to $1,194.99 | Check Prices | Check Prices | $397.95 |
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| Release date | November 14, 2006 | November 02, 2008 | July 13, 2006 | November 12, 2007 | July 13, 2006 |
| The Bottom Line | If you thought dual cores were over the top, get ready. Intel presents the Core 2 Extreme QX6700, a single CPU with four distinct processing cores. At $999, the first quad-core CPU will remain an enthusiast part for a while, but as a glimpse of the future, it's clear that clock speed is out and core counts are in. | 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. | AMD's Athlon 64 FX line has worn the desktop CPU performance crown for over a year. The king is dead. Intel's new flagship Core 2 Extreme X6800 not only hands AMD a defeat on all of our benchmarks, but it's also a more efficient, better designed chip overall. | 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. | Intel's Core 2 Duo E6700 offers the best price-to-performance ratio we've seen in a desktop chip. For half the cost of AMD's top-of-the-line chip, you get identical if not superior performance and better power efficiency. AMD surprised us last year with its completely dominant dual-core chips, but Intel regains the crown with Core 2 Duo. |
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| Features | Intel 64 Technology Intel Smart Memory Access Intel Advanced Smart Cache Intel Wide Dynamic Execution Enhanced SpeedStep technology Execute Disable Bit capability Intel Virtualization Technology Intel Advanced Digital Media Boost | Intel 64 Technology Demand Based Switching Intel Thermal Monitor 2 Enhanced Halt State (C1E) Hyper-Threading Technology Enhanced SpeedStep technology Execute Disable Bit capability Intel Virtualization Technology | Intel 64 Technology Enhanced SpeedStep technology Execute Disable Bit capability Intel Virtualization Technology | Intel 64 Technology Intel Smart Memory Access Intel Advanced Smart Cache Streaming SIMD extensions 4 Intel Wide Dynamic Execution Enhanced SpeedStep technology Execute Disable Bit capability Intel Virtualization Technology Intel Advanced Digital Media Boost | Intel 64 Technology Enhanced SpeedStep technology Execute Disable Bit capability Intel Virtualization Technology |
| Cache Memory | L2 cache Advanced Smart Cache - 8 MB ( 2 x 4MB (4MB per core pair) ) | L3 cache Advanced Smart Cache - 8 MB | L2 cache Advanced Smart Cache - 4 MB | L2 cache Advanced Smart Cache - 12 MB | L2 cache Advanced Smart Cache - 4 MB |
| Bus Speed | 1066 MHz | Info unavailable | 1066 MHz | 1333 MHz | 1066 MHz |
| Compatible Slots | 1 x Processor - LGA775 Socket | 1 x Processor - LGA1366 Socket | 1 x Processor - LGA775 Socket | 1 x Processor - LGA775 Socket | 1 x Processor - LGA775 Socket |
| Manufacturing Process | 65 nm | 45 nm | 65 nm | 45 nm | 65 nm |
| Multi-Core Technology | Quad-Core | Quad-Core | Dual-Core | Quad-Core | Dual-Core |
| Processor Qty | 1 | 1 | 1 | 1 | 1 |
| Product Description | Intel Core 2 Extreme QX6700 / 2.66 GHz Processor | Intel Core i7 Extreme Edition I7-965 / 3.2 GHz Processor | Intel Core 2 Extreme X6800 / 2.93 GHz Processor | Intel Core 2 Extreme QX9650 / 3 GHz Processor | Intel Core 2 Duo E6700 / 2.66 GHz Processor |
| 64-bit Computing | Yes | Yes | Yes | Yes | Yes |
| Product Type | Processor | Processor | Processor | Processor | Processor |
| Compatible Processor Socket | LGA775 Socket | LGA1366 Socket | LGA775 Socket | LGA775 Socket | LGA775 Socket |
| Clock Speed | 2.66 GHz | 3.2 GHz | 2.93 GHz | 3 GHz | 2.66 GHz |
| Packaging Type | Info unavailable | FC-LGA8 | Info unavailable | Info unavailable | Info unavailable |
| Manufacturer Warranty | 3 years warranty | 3 years warranty | 3 years warranty | 3 years warranty | 3 years warranty |
| Processor Type | Intel Core 2 Extreme QX6700 | Intel Core i7 Extreme Edition I7-965 | Intel Core 2 Extreme X6800 | Intel Core 2 Extreme QX9650 | Intel Core 2 Duo E6700 |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Intel Core 2 Extreme QX6700 comparison
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