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syndicot
12-01-09, 12:05 PM
Just got a Q9550. Love it. OC's well. Have it running at 3.6 with no voltage added to cpu. Right now I am limited, I believe, by my Corsair XMS6400. The mem is running at 425. Is it worth it to get some 1066 stuff (around $100) to see it the chip can get to 4 ghz? Would love to see it running at 4ghz but not sure how common that is on the Q9550s.

Any input is appreciated.

If you have the E0 stepping its very common. Mine is at 4ghz right now with just a meager 1.26VC and is prime 95 stable. I have had it as high as 4.3ghz but backed it down to 4ghz because it didnt make a difference in any of my apps or games.
Maverick123w
12-01-09, 12:58 PM
If you have the E0 stepping its very common. Mine is at 4ghz right now with just a meager 1.26VC and is prime 95 stable. I have had it as high as 4.3ghz but backed it down to 4ghz because it didnt make a difference in any of my apps or games.

But it increases E-Peen significantly....
balex99
12-01-09, 04:16 PM
Mine is the EO stepping. The guys over at Xtremesystems think it is my board that is holding me back and not the mem. What do yall think? Is there any way I can test this without buying the memory?

I tried loosening the timings and upping the FSB voltage but couldn't get it to run at anything higher than 430mhz. That is with the cpu multi lowered to test the memory. Also I am running with all slots populated. I've got 4x1gb sticks. If any of that info helps.

Oh, and thanks for the replies.
syndicot
12-01-09, 05:00 PM
Mine is the EO stepping. The guys over at Xtremesystems think it is my board that is holding me back and not the mem. What do yall think? Is there any way I can test this without buying the memory?

I tried loosening the timings and upping the FSB voltage but couldn't get it to run at anything higher than 430mhz. That is with the cpu multi lowered to test the memory. Also I am running with all slots populated. I've got 4x1gb sticks. If any of that info helps.

Oh, and thanks for the replies.

It likely is your board, my last board was a gigabyte p35 board and it could not clock my Q9550 anywhere near as high as my gigabyte p45 board.