Need help: can't get past 2600MHz

[Manga]

On my LANPARTY UT nF4 SLI-D I can't get my Venice 3200 further than 2600MHz prime stable. It'll boot up to 2700MHz, but it gives an early error in Prime, even with 1.7V. Now I'm running 2.6GHz @ 1.56V. Other voltages are default. Can anybody help me getting this chip go faster?

[Praz]

That might be as far as it will go. We have the same processor and memory. Mine is stable at 2660/1.53v At 2700 I get errors in Prime95 after 8 1/2 to 9 hours. I've had my memory stable to 280.

[teamxrsx]

unless you have some dram settings that are not perfect, this might be the limit for your chip.

 

CJ

[adreno]

Manga, similar story here and if you check my sig I am using very similar components as yours including Samsung UCCC. I could acutally get into windows at 2750 but no way could I get it stable beyond about 2625Mhz. You might try lowering your multiplier to 9x, and then OC from there as I had some success with that getting higher OC. Also try different memory dividers as sometimes that can get you a better OC.

 

My theory is that the memory controller on my chip was quite good, but the floating point proc was not as good, and since Prime95 stress tests both heaviliy it would fail from time to time. Its just a theory though.

[blick]

It may help if you increase LDT and Chipset voltage a little bit.

[Reimannian]

You don't need to increase the LDT voltage, but what is the LDT multi set at?

 

It should be set so that you don't exceed HTT 2000.

 

e.g. if your LDT is set at default (x5) then your current HTT speed is 260 x 2 (for DDR) x 5 = 2600, which would be way too high.

 

I'm guessing that this isn't the case?

[Manga]

When overclocking the cpu, the memory was scaled lower so it couldn't be a problem. LDT is auto, I've tried as well 2 and 3. I've tried already with a multiplier of 9, but that didn't get me even near 2600MHz. The limit of my chip i guess than?

[stugatz]

were you using the DRAM/FSB divider when you dropped the multiplier and raised the FSB?

[Manga]

HTT frequency, but yes I did.

[madu]

Raising LDT voltage can give performace..it did for me... also it is said to keep the HTT below 2000.. But when I put my HTT at x3 it gives me about 1600 something..and had boot problems.. when I switched to x4 it was 2160 something HTT but worked fine.. I think going a couple of hudred mhz over in htt is ok as long as you keep it low..think its better than going a lot below.. dont know, thats how it worked for me..

also i recommend not to keep the LDT multi at auto.. I dont know the explanation but when mine was at auto, I couldnt get pass 2.84.. when changed to x4 and abit more voltages here and there I could get here.. so try playing around in the genio bios..

[Manga]

No, that doesn't work either. I came till 2700MHz with 1.73V and LDT 0.1V higher and set to 4. That;s too much of a voltage raise for so little speedgain. But thanks anyway for thinking with me!

[sgogeta4]

what CPU revision do u have? (E3, E6, etc) and what's your voltage setting ie. 1.500V * 110%? My Venice is Prime stable 10+ hours at 250x10 at 1.425V * 104% = 1.482V, I need to up the voltage quite a bit up to get stable at 260x10 - 1.525V * 104% = 1.586V, since I'm on stock, I'd rather stick with what I have then push the voltage too high.