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1055T 4 GHz, Northbridge Problems

post #1 of 9
Thread Starter 
Hey guys

Well I got my hands on an H70 today, and I'm very impressed with the cooling. My maximum load temperatures at 1.45v were ~45-46c. Anyway, the whole reason I bought it was to get to 4 GHz, which I have been assured is possible.

My CPU multiplier is at 14x and won't go any higher (due to it not being a black edition). My memory timings are 9-9-9-24 @ 1333 MHZ, and the DIMMs are all G.Skill 2 GB modules (8 GB in total).





These are two screenshots of my BIOS voltage/clock settings, and for the most part, the settings are stock.

I had the CPU voltage set to 1.45v which should be round about enough to get me to 4 GHz. Since I was assuming it would at least post and boot properly at that voltage even if it was unstable (only slightly), I figured the NorthBridge was holding me back since the PC beep was issuing error codes signalling a failed boot.

Problem is, the overclocks I've done have always been minor ones which never had a significant raise on the FSB. 286 MHz on the FSB is what I need to get to hit 4 GHz, but it's not stable. My first thought was to raise the 'NB voltage' in the picture to 1.4v which is what people with my chipset were using roughly. The system still failed to post and it gave an error code beep.

Here's where I'm in the dark: that voltage should be plenty for the NB, but I have no idea how voltages with the HT link work, and I can't figure out what the 'CPU NB VID voltage control' setting is in the BIOS. Do I need to raise this too as well as the 'NB voltage'?

It'd be great if someone could explain these different voltages/settings to me, and give me some settings to try. This is my first attempt to get 4 GHz
post #2 of 9
Considering your RAM is 1333 RAM, I have a very hard time believing it'll even POST at 1907 (you're using the 1333 divider, which is 6.67x..... 286 x 6.67 = 1907). Lower your memory as low as it'll go, then try.

Have your NB ratio at 9x, and your HT at 7x. Just to start it out. You can always clock them up from there later.
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Junkyard
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NAStradamous
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HTPC01
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CPUMotherboardGraphicsRAM
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Crucial MX100 256GB WD Green 2TB DVDRW Corsair H50 Push / Pull 
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NZXT 120mm fans strapped to stock 7970 cooler Windows 10 Pro Dell 3007WFP Dell 2007FP 
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post #3 of 9
Thread Starter 
Oh wow, this whole time I had no idea that the RAM went up with the FSB too... thanks so much. I'll give 'em a go now and edit this post.

EDIT: where are these 'ratios'? In the screenshots there are only voltage control settings for the HT and NB.
post #4 of 9
You'll have to OC via the ref clock.
The generic 1333 CL9 memory may hold back OC-ing via the ref clock or present you with some complicated options. i.e. to reach 4Ghz you need a 286Mhz ref clock. At that ref clock there is no way you can get to 1333Mhz; you will have to either run 333x4 [if your board can handle it, this is around the area most boards max out at] or 250x6.67 or otherwise run RAM at lower speed (tighten the timings to compensate). You may be able to get your RAM to run at a higher speed, but considering most of the ICs used on 4GB DIMMs are in their infancy and aren't made to overclock well in most cases, you might not even be able to make it there.
post #5 of 9
Thread Starter 
I am prepared to send 1.6v through the RAM now, because I have a RAM cooler which I can install, as long as the 1.6v won't make it too hot/ruin its lifetime..

As for the voltages, nothing needs to be touched?
What clocks/voltages do I need to change if I can get the RAM to run at a decent speed?
Also, what kind of speed would be needed for this from the RAM..
post #6 of 9
You can push up to 1.65V safely, without any heatspreaders, on most RAM
post #7 of 9
now im worried that giving 2.192 to my ram is a bad idea lol
on topic though lowering the ht and htt and knocking the ram down to the next "set memory clock" setting should allow your 4ghz fix
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post #8 of 9
Thread Starter 
So it's definitely my RAM holding me back on this one and stopping the system from being stable?

Also, I'd really appreciate it if you guys could give me settings next to the directive name in the BIOS, I get confused really easily with HT/NB voltages and I don't want to bump up the wrong voltage. I need the exact name of the setting in the BIOS screenshots I posted, thanks.
post #9 of 9
Quote:
Originally Posted by MightyMission View Post
now im worried that giving 2.192 to my ram is a bad idea lol
on topic though lowering the ht and htt and knocking the ram down to the next "set memory clock" setting should allow your 4ghz fix
You are on ddr2 RAM. different voltages. I've had my tracers up to 2.36 chasing higher clocks.
    
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