Isn't sata normally connected to PCI frequency? (= 33.33MHz)
So PCI-E frequency has nothing to do with this
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Isn't sata normally connected to PCI frequency? (= 33.33MHz)
So PCI-E frequency has nothing to do with this
If you want to overclock your CPU you decrease your HTT so it is not an issue so you can see what the cpu limit is. If you use x5 multiplier on an nforce3 board and then start using 250x10 then the HTT will cause the problem and you will never max out your cpu or memory.Quote:
Originally Posted by HiJon89
If you want to overclock your FX nvidia video card and avoid throttling you ease off the RAM so the gpu can be maxed out ( or conversely with a bandwidth starved card such as 6600 you ease off the gpu and go for the memory)
Do you get my drift ?
With overclocking the gpu on Pcie you would not want normally the Pcie bus being overclocked so as to limit you. But the reverse is the case this time.
Regards
Andy
If you guys hit a wall where you stop seeing gains or functionality around 122-124mhz pci-x in SLI, it because there is a limitation on the nf4 chipset. The cards just don't work over 930-940 core in SLI. Never tried on a dual 16x nf4 board, but I suspect there may be less problems with the increased lanes. With single card, you should be able to run pci-x around 134-136mhz without issues on nf4.
Of course on am2 the pci-x issues are completely gone but you can still work around it on nf4 when benching from air to SS cooling. NVIDIA directly addressed this issue with am2 :)
Million dollar question is if this issue will exist on conroe/merom setups when trying to push the cards on ln2 on an "officially" unsupported dual vga mobo.
Whats the mhz sweetspot with 7900gtx in sli
on the Foxconn C51XEM2AA ? :)
I'snt PCIe frequency used for clock generation on the GPU? Perhaps the higher or lower frequency is easier for the GPU to lock on to?
I have no idea if this is true, just a guess :)
Tom
Linkboost locks it down at 125mhz and your good for well over 900 before you have to start messing with anything.Quote:
Originally Posted by Dynasty
1050mhz@ -100c SLI is my new sweet spot. That speed likes around 139mhz.
k|ngp|n, do you use SATA drives and if so have you noticed any corruption at frequencies that high?
i dont think he has sata drives??
i dont know
saw to gain for me. but my asus mobo has PEG link set to auto so it may auto bump the pci-E speed up?
increasing pci freq--->increasing bandwidth i don't understand how this can make performance go up if pci ex its not used completely by gfx cards!improvements must be somewhere else.. waht do u think?
You increase the speed of a bus, thus the data gets elsewhere faster.