That would be great

In my case, overclocking my i7 920 D0 to 4.5GHz was no problem and took me about 20 hours. Now I am in progress to go for 4.6GHz and this is far difficult.As for the expensive Chips like 950 or 975 THERE IS NO GUARANTY to overclock this babies higher then a 920! With my Xeon W3540 (same as a 950) I was not able to get this Chip past 4.4GHz. But if you put this chip on ice it will run with 5+GHz, but this is not for 24/7...By the way, a few people at our overclocking form recently gets their 975 and all of them where not able to go past 4.4-4.5GHz (on water).

So in other words just like I mentioned weeks ago from what I

Hi,Well, so far I have been able to reach 142x31=4402GHz. Temps are in the mid to upper 70s (still on air). I still have to keep the voltage at 1.60 for my memory.It took many hours trying to get this speed, but so-far-so-good. I don't think I can go any higher. I've kept all the settings on page one in the listed post and I've now maxed out Ultimate Traffic 2.http://forums1.avsim.net/index.php?showtopic=251512Looks like I'm done.

I still have to keep the voltage at 1.60 for my memory.

That is the "uncore" voltage (QPI/DRAM voltage). How about your RAM freq and timings? Could you post a couple of pictures from CPU-Z, the CPU and the Memory tabs? A QPI/DRAM voltage 1.6 seems way to much.

Hi,QPI/DRAM is set at 1.60. This is set as per Corsair. The system will not boot with anything lower. Memory timings are 7-8-7-20.

So in other words just like I mentioned weeks ago from what I've been reading, for the most part the Extreme Edition 975 doesn't overclock any higher than a D0 920/950.The extra $500 over the 950 is for the convenience of the un-locked multiplier, which to some might be worth it.

Higher clocks on air or water are indeed not possible with a 975. But apart from the open multi you also get 6.4GT/s instead of 4.8. This should give FSX more smoothness at the same cpu speed because of the memory bandwidth.Id like to test these but i think it is not worth the money. I will do some movies with my 920 at 4570MHz. Soon.

Higher clocks on air or water are indeed not possible with a 975. But apart from the open multi you also get 6.4GT/s instead of 4.8. This should give FSX more smoothness at the same cpu speed because of the memory bandwidth.Id like to test these but i think it is not worth the money. I will do some movies with my 920 at 4570MHz. Soon.

Thanks the movies should be interesting.The 6.4GT/s vs. 4.8 was brought up before but just how much that

Hi,Heat should not be a concern if you are not going to overclock. The 70 degree temps I'm getting is a result of overclocking this chip. This chip should be running at 3.3GHz, I'm running at 4.4GHz. I think 70 degree temps for a 1+GHz overclock is outstanding.As a true Flight Simmer, if an additional $500.00 gets me 6.4T vs 4.8T which results in smoother performance in FSX then so-be-it, I'm sold.If you are overclocking you will not see lower temps with a Ultra120 eXtreme heat sink. The designers of the Ultra120 eXtreme are the same ones who designed the Prolimatech Megahalems heatsink that I'm using.

Thanks the movies should be interesting.The 6.4GT/s vs. 4.8 was brought up before but just how much that’s going to make a difference in FSX performance or any other sim/game I think is in question. One other thing that concerns me is the temperatures that are being mentioned in this thread. “Temps are in the mid to upper 70s” is this really how hot these i7’s are getting? I just picked up an Ultra120 eXtreme 1366 RT for my i7 build but I hope I can see lower temps than that.

Hi,Heat should not be a concern if you are not going to overclock. The 70 degree temps I'm getting is a result of overclocking this chip. This chip should be running at 3.3GHz, I'm running at 4.4GHz. I think 70 degree temps for a 1+GHz overclock is outstanding.As a true Flight Simmer, if an additional $500.00 gets me 6.4T vs 4.8T which results in smoother performance in FSX then so-be-it, I'm sold.If you are overclocking you will not see lower temps with a Ultra120 eXtreme heat sink. The designers of the Ultra120 eXtreme are the same ones who designed the Prolimatech Megahalems heatsink that I'm using.

Thanks Mike.In my situation my hardware usually get sold after six months, so running a new CPU at 70C for any great duration is out of the question. If I can get a stable 3.8

Hi,My only concern was the voltage being used for the memory, 1.6. But as Nick pointed out earlier, I will probably end up with a reduced life span of about five years, I can live with that. I'll more-than-likely upgrade prior to that anyway.You should have no problem getting to 3.8 / 4.0 GHz staying within Intel's 1.35 volt limit. Your temps will be better than mine as long as your room temps are within reason.With a voltage of 1.35 and an overclock of 3.8/4.0, don't think you'll need liquid cooling.

Hi,My only concern was the voltage being used for the memory, 1.6. But as Nick pointed out earlier, I will probably end up with a reduced life span of about five years, I can live with that. I'll more-than-likely upgrade prior to that anyway.You should have no problem getting to 3.8 / 4.0 GHz staying within Intel's 1.35 volt limit. Your temps will be better than mine as long as your room temps are within reason.With a voltage of 1.35 and an overclock of 3.8/4.0, don't think you'll need liquid cooling.

I

Thanks the movies should be interesting.The 6.4GT/s vs. 4.8 was brought up before but just how much that's going to make a difference in FSX performance or any other sim/game I think is in question. One other thing that concerns me is the temperatures that are being mentioned in this thread. "Temps are in the mid to upper 70s" is this really how hot these i7's are getting? I just picked up an Ultra120 eXtreme 1366 RT for my i7 build but I hope I can see lower temps than that.

Those i7 goes much hotter than the E and Q ones. Mine is on water (strong pump and 9er (9x 120mm Fans) radiator. Under load in FSX I get 70-80 C @ 4570 MHz and with 1.42 VCore. For the new I7 you should not go over 95 C. Above 100 C the CPU will throttle automatically to save its live ;-)