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| Price | $999.99 to $1,230.74 | Check Prices | $1,019.99 to $1,204.95 | $184.99 to $280.64 | $319.90 to $410.00 |
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| Release date | November 12, 2007 | November 14, 2006 | March 27, 2008 | ||
| The Bottom Line | 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. | 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. | The quad-core Core 2 Extreme QX6850 keeps the desktop CPU performance belt tied firmly around Intel's waist at a price that helps offset the lack of sizable performance gains. New products at the end of the year may outclass this new chip when they arrive, but for now, the QX6850 reigns supreme. | AMD's new Phenom X4 9850 is overpriced and outclassed compared with its Intel-based quad-core competition. If PC vendors can use this chip to make cheap systems (as they did with older Phenoms), we might have nicer things to say, but as a DIY part at this price, we can't recommend AMD's latest quad-core CPU. | |
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| Features | |||||
| 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 |
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 Intelligent Power Capability Intel Smart Memory Access |
HyperTransport technology AMD Virtualization AMD Cool'n'Quiet Technology Enhanced Virus Protection |
Intel Advanced Digital Media Boost Intel 64 Technology Intel Wide Dynamic Execution Intel Trusted Execution Technology Enhanced SpeedStep technology Execute Disable Bit capability Intel Virtualization Technology Intel Advanced Smart Cache Intel Smart Memory Access |
| 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 Advanced Smart Cache - 8 MB ( 2 x 4MB (4MB per core pair) ) |
L2 - 4 x 512 KB - L3 cache 2 MB |
L2 cache Advanced Smart Cache - 12 MB ( 2 x 6MB (6MB per core pair) ) |
| Bus Speed |
1333 MHz |
1066 MHz |
1333 MHz |
Info unavailable |
1333 MHz |
| Compatible Slots |
1 x Processor - LGA775 Socket |
1 x Processor - LGA775 Socket |
1 x Processor - LGA775 Socket |
1 x Processor - Socket AM2+ |
1 x Processor - LGA775 Socket |
| Manufacturing Process |
45 nm |
65 nm |
65 nm |
65 nm |
45 nm |
| Multi-Core Technology |
Quad-Core |
Quad-Core |
Quad-Core |
Quad-Core |
Quad-Core |
| Processor Qty |
1 |
1 |
1 |
1 |
1 |
| Product Description |
Intel Core 2 Extreme QX9650 / 3 GHz Processor |
Intel Core 2 Extreme QX6700 / 2.66 GHz Processor |
Intel Core 2 Extreme QX6850 / 3 GHz Processor |
AMD Black Edition AMD Phenom X4 9850 / 2.5 GHz Processor |
Intel Core 2 Quad Q9550 / 2.83 GHz Processor |
| 64-bit Computing |
Yes |
Yes |
Yes |
Yes |
Yes |
| Product Type |
Processor |
Processor |
Processor |
Processor |
Processor |
| Compatible Processor Socket |
LGA775 Socket |
LGA775 Socket |
LGA775 Socket |
Socket AM2+ |
LGA775 Socket |
| Clock Speed |
3 GHz |
2.66 GHz |
3 GHz |
2.5 GHz |
2.83 GHz |
| Manufacturer Warranty |
3 years warranty |
3 years warranty |
3 years warranty |
3 years warranty |
3 years warranty |
| Processor Type |
Intel Core 2 Extreme QX9650 |
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