O'Ced QX6700 to 3.5 Ghz, but got LOWER scores in 3DMARK05? ( 2 Views )

1. Hey Guys - I was able to experiment with overclocking my eVGA 680i (A1 - P29 Bios), QX6700 and Corsair DDR21066 Memory. I got to the point where I found the spot which my CPU was acting stable when I got my FSB to 356 (1424 QDR). I ran stable with Orthos for 4 hours with no errors.
   
   Geeked with the results, I went to benchmark my system via 3DMARK05 to see what the impact would be on my scores. I typically score around 14400 with my setup running at stock speeds (BFG 7950 GX2 at stock). When I ran it the first time, I saw a lot of choppiness that was blatently slower than when I run under stock, and I scored around 8000? Since I thought it was the ya-yo speaking to me, I ran it again and scored 7900.
   
   Now, I must admit that although I am not an expert at o'cing, I was pretty confident about how to oc the cpu. All of the usual suspects were set to disabled (All Spread Spectrums, CPU Thermal Control, Intel Speedstep, C1E Halt State), as well as unlinking my Corsair Memory (disable SLI-Ready Memory, UNLINK FSB-Mmory Clock Mode, and manually set the memory timings/voltage on my modules) to match stock speeds for the mem. Also, my volts were set as follows (1.35 CPU Core, 1.3 CPU FSB, 2.2 Memory, 1.4 SPP, 1.5 MCP, 1.45 HT Nforce). Again, I was running stable via Orthos, and temps were in good range via SpeedFan. Basically, I was manipulating the QDR and modifying voltages and monitoring temps.
   
   Finally, my question - what would cause my performance to go down sooooo much? I think it has to be something that is so simple, I overlooked it. Outside of the Spread Spectrums, I did not change anything else on the System Clocks screen while O'cing, so my gut is telling me that the Mhz for PCIe may be involved, but I am not sure. Any thoughts, suggestions, guidance would be greatly appreciated.
   
   
   (KEMAL, Sudan)


2. Increase your CPU and RAM voltage by .1v
   
   Also, monitor your temps with a better program just to be sure... intelTAT or Coretemp if you can!
   
   
   (pýnar, Egypt)


3. This is just a guess, but if the stuff in charge of branch prediction and prefetching is the first to fail when you overclock, you could see a performance decrease before you see instability.
   
   OR it could just be thermal throttling. Check your temps.
   
   
   (büþra, Brunei Darussalam)


4. Quote:

   Originally Posted by sammy5gs (Post 1031232724) Since I thought it was the ya-yo speaking to me

   No.. that was probably just sleep.
   
   
   (murat, Jamaica)


5. Wait, you overclocked a QX6700 Quad-Core CPU to 3.5Ghz with an Arctic Cooling Freezer 7? Isn't that kind of high? I thought you could barely get 3.4Ghz on the Tuniq Tower, to the Arctic Cooling Freezer 7??
   
   
   (gözde, Portugal)


6. Maybe he was doing it in the arctic ;)
   
   
   (erbil, Myanmar)


7. I've seen scores drop when a core fails, make sure all of them are running.
   
   
   (murat, Hungary)


8. Well you can try to match with me.
   
   
   
   
   
   (FAHRÝ, Central African Republic)


9. Q6600 @ 3.5Ghz with Watercooling.
   Now that makes more sense.
   
   
   (emre, Sri Lanka)


10. I upped my PCIe to 115mhz....seemed to help a bit with my scores...
    
    
    (erbil, Myanmar)


11. Your temp sensor is obviously wrong, because it says the core is the same temperature as the system. Try feeling the heatsink with your finger. I bet it's a thermal throttling thing, because that shitty heatsink could not handle a quad at 3.5ghz.
    
    Also, 2T command rate on your ram is very bad for performance. Change it to 1T if you can.
    
    
    (onur can, Kuwait)


12. Quote:

    Originally Posted by Mr. Headshot (Post 1031237655) Your temp sensor is obviously wrong, because it says the core is the same temperature as the system. Try feeling the heatsink with your finger. I bet it's a thermal throttling thing, because that shitty heatsink could not handle a quad at 3.5ghz. Also, 2T command rate on your ram is very bad for performance. Change it to 1T if you can.

    2T won't hurt performance more than 1-5%, hardly noticeable in anything but synthetic benchmarks. I agree that temperatures are probably the problem, not many quads get to over 3.2~3.4 without watercooling at safe temperatures.
    
    

    Quote:

    Originally Posted by Crosshairs (Post 1031237088) I upped my PCIe to 115mhz....seemed to help a bit with my scores...

    If anything, you would want to lock your PCI-E to the standard setting so that your overclock can't mess it up. Running at 115 may help boost bandwidth but eventually you will get errors and crashed because of it.
    
    
    (rümeysa, Myanmar)


13. The Ultra 120 extreme beats the crap out of your heatsink: http://www.anandtech.com/casecooling...spx?i=2981&p=3
    
    
    (seniha, Seychelles)


14. Quote:

    Originally Posted by -=Antimatter=- (Post 1031237715) If anything, you would want to lock your PCI-E to the standard setting so that your overclock can't mess it up. Running at 115 may help boost bandwidth but eventually you will get errors and crashed because of it.

    
    
    I was told by Viper John, who did my card, to run it at 115....I had it at 100 and was having problems..the 115 setting seemed to fix that..I cant explain it, but it worked for me :)
    
    
    (bilal, Brunei Darussalam)

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