Buy Intel Core 2 Extreme QX6700 HH80562PH0678MIntel Core 2 Extreme QX6700 HH80562PH0678M Product Description:
- Frequency (MHz): 2667
- Bus speed (MHz): 1066
- Core steppings: B0,B1
- Level 2 cache size: 8MB
- Socket: LGA775
Product Description
Intel Core Extreme Processor QX6700 (SL9UL)2.66GHz 8M 1066MHz OEM CPU
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Intel Core 2 Extreme QX6700
By Roger
I paid and extra $3.00 for express shipping. It was ordered on Monday evening and I received it Thursday morning. Packaging was more than expected for a used product. The CPU very clean contained in case, placed in Mylar bag and shipped in bubble bag. Most importantly of all it worked and continues to work great.I have a Dell XPS 700 that I purchased in December of 2006. The original CPU was a Intel E6400 2.13GHz and achieved a respectable Windows Experience Index (WEI) of 5.1. Because the XPS 700 has a NVIDIA N590 chipset, I was able to "overclock" (OC) the E6400 to 2.66 GHz by flashing the BIOS to 1.4. and using the "N-Tune" utility from NVIDIA's website. The E6400 with the OC now has a WEI of 5.3. Note that N-Tune is an operating system (OS) utility and some games act abnormal in this mode. Examples are over talking or acting like they are on massive steroids. A nice work around is to use the command line "bcdedit /set useplatformclock TRUE". This will give the overclock benefit and cause the game programs to behave.The XPS has (x2) GTX 550ti video cards. One is a PNY XLR8 and the other MSI Cyclone-II. The game bottleneck, even with the OC is the CPU, which is why I decided to upgrade.In my research, I discovered that I could add a quad CPU up to a QX6800. It was an obscure statement on one of Dell's forums that went something like, unlike other XPS motherboards (MB), the H2C does NOT support the following…. and a list of CPUs followed. One enterprising user took a leap of faith and decided that the Dell tech meant that the XPS 700 would support the CPUs in the list and plopped one in and it worked. So, I decided to try.I didn't go with the QX6800 because it was $200 (used) and I didn't want to spend that much on something that might not work. I decided to go with the QX6700. I figured I could overclock it to the 6800 speed.I was fortunate to keep my user manuals, which went into great detail on how to replace the CPU. In addition, there are many instructions, comments, experiences, on the internet on how to replace a CPU. I knew what products to get, what products not to get and how to precisely to remove, clean, and exchange a CPU on any MB ever produced; it's just amazing the amount of material. Because of this, swapping out the CPU was brilliantly easy. The longest amount of time was cleaning my old case of 5 1/2 years of dust.I had already uninstalled the nTune utility because I had no idea what that would do with the new CPU. I turned on the computer and got caught off guard because the BIOS was squawking about the CPU, windows had booted. I had to go back and reboot to get into the BIOS. I had read that a multiplier parameter would appear in the BIOS when an "X" chip was installed in the motherboard and sure enough the multiplier was there. I immediately upped the clock to 2.92 GHz. The system worked perfect. No BSOD, lockups or instability.I then increased the CPU speed to 3.2 GHz and again system worked great. The issue I have with this speed is the core temp increased to 72º at 100%. Now, core temp says the Tj. Max is 85º. I also read that 64.5º was the max temp I should be running this processor. So, I wanted to get the core temperature down. The CPU fan was not at max speed so I installed nTune to see if I could increase the CPU cooler fan. I thought I would be able to control the MB fans, which is an option in nTune, and not adjust CPU frequency. This was not the case. The computer did not like nTune. After several BSODs and lock ups, I uninstalled nTune and throttled back the CPU to 2.92. At this frequency and voltage the core rarely goes above 60º and my "real-world" applications are really not affected. In other words I didn't take a performance hit by lowering the CPU frequency to 2.92 GHz.
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