MaximusIV-Extreme Thread

[donmarkoni]

just got the maximus iv extreme-z, and I was wondering if there was anyway to run 2 video cards on x16/x16?, it seems for 3 cards I can do x16/x16/x8 but for 2 cards the manual says x8/x8 which I found kind of weird.

Put them in slots 2 & 4 to run both at 16x, but if you have time, test them in slots 1 & 3 at 8x both. You should get slightly better results.

If you want to run 3 graphic cards at 16x, you should use slots 1, 2 & 4.

What voltage should be change for overclocking i7 2600k for 5.0ghz+. I have Maximus IV Extreme-Z68? Where in the BIOS, the QPI Voltage
Thanks

Except obvious (vCore) you should try playing with VccSA & VccIO, which are something like QPI/VTT. Many say VccIO is the key, but I would not forget about VccSA. Don't forget DIGI+ VRM section.

[MonsterDK]

After all the faffing aroud. As soon as I disable Marvell in BIOS, windows will install and the immediate issues I was getting have gone.

Anyone any ideas why Marvell would do that?
I have Intel Sata as RAID for a Raid 0 setup.

thanks

[i_max2k2]

Put them in slots 2 & 4 to run both at 16x, but if you have time, test them in slots 1 & 3 at 8x both. You should get slightly better results.

If you want to run 3 graphic cards at 16x, you should use slots 1, 2 & 4.


Except obvious (vCore) you should try playing with VccSA & VccIO, which are something like QPI/VTT. Many say VccIO is the key, but I would not forget about VccSA. Don't forget DIGI+ VRM section.

Thank you! this is good info! I'll test it on both slots , and those are some good clocks on the 580, is it on water?

[i_max2k2]

Put them in slots 2 & 4 to run both at 16x, but if you have time, test them in slots 1 & 3 at 8x both. You should get slightly better results.

If you want to run 3 graphic cards at 16x, you should use slots 1, 2 & 4.

You were right! Ran 3D mark (Vantage/11) on both 2/4 and 1/3 configs with my 470 SLI, and 1/3 was better even being at x8 (by about 200-300 points), I'm guessing 1/3 is native Z68 Chipset lanes, and in 2/4 is it 16 lanes from P67 and 16 lanes from NF200?

Yesterday I tried overclocking my vanilla 580 (stock hsf), I was able to get upto 950/1900/4250 @ 1.15v, that was the max voltage I think evga's bios allowed, and for some weird reason, I dint have issues while doing artifact scanning at lower volts, but as soon as I ran 3D mark 11 the drivers crashed, this happened several times, I cleaned up my drivers, that dint help, then I tried increasing the voltage and thats when I realized the issue was lower voltage, but I would think in such circumstances I would artifacts atleast in Furmark or something, did something like this happen with your cards too?

The ambient temps were low and on max loads I wasnt going over 74c in Furmark/3D mark 11/ Vantage, so I think I have a little more headroom for slight higher voltage, and in 3d mark 11 I went from P6500 to ~ P7400, which I thought was pretty significant, this is my first experience with ocing the 500 series, and it seems fermi scales very well after 900Mhz. But I'm not sure what are safe voltages/temps for these cards for 24/7 use, how much voltage are your cards running on?

[deachus]

Lanes 1&3 are 8x each directly to the CPU. Lanes 2&4 are 16x each through the NF200 chip which adds latency causing the lower scores.

[i_max2k2]

Lanes 1&3 are 8x each directly to the CPU. Lanes 2&4 are 16x each through the NF200 chip which adds latency causing the lower scores.

Ok that makes sense, so now I'm wondering, in a TRI SLI situation, when we have cards split up between NF200 and P67/Z68, would the performance actually degrade because of this latency? Not sure how that would work, I'm just guessing that the some lanes will be going to the chipset some to NF200.

[donmarkoni]

You were right! Ran 3D mark (Vantage/11) on both 2/4 and 1/3 configs with my 470 SLI, and 1/3 was better even being at x8 (by about 200-300 points), I'm guessing 1/3 is native Z68 Chipset lanes, and in 2/4 is it 16 lanes from P67 and 16 lanes from NF200?

Yesterday I tried overclocking my vanilla 580 (stock hsf), I was able to get upto 950/1900/4250 @ 1.15v, that was the max voltage I think evga's bios allowed, and for some weird reason, I dint have issues while doing artifact scanning at lower volts, but as soon as I ran 3D mark 11 the drivers crashed, this happened several times, I cleaned up my drivers, that dint help, then I tried increasing the voltage and thats when I realized the issue was lower voltage, but I would think in such circumstances I would artifacts atleast in Furmark or something, did something like this happen with your cards too?

The ambient temps were low and on max loads I wasnt going over 74c in Furmark/3D mark 11/ Vantage, so I think I have a little more headroom for slight higher voltage, and in 3d mark 11 I went from P6500 to ~ P7400, which I thought was pretty significant, this is my first experience with ocing the 500 series, and it seems fermi scales very well after 900Mhz. But I'm not sure what are safe voltages/temps for these cards for 24/7 use, how much voltage are your cards running on?

We should not spam this thread, as there is dedicated thread for GTX 580 overclocking and stuff. You have PM.