oc trouble, stable cpu, ram issue

jasoncourt · 20 May 2012 at 17:56

hey ppl. new guy jason here, ill get to the point tho,

trying to overclock my system, cant seem to get the ram to overclock to well,

system specs are:

i7 920 d0 stepping / asus p6t se / 2x2gb g.skill ram 12800 1600,hz / nvidia gxt 260oc / wd hhd

my current (unstable oc) is at 3.6ghz, with ram at 1804mhz, if i underclock my ram it is stable, my bios setup is as follows.

oc xmp

1600mhz 9.9.9.24.2n 1.5v

cpu ratio 20
speedstep dis
bclk 180
pcie 100
dram 1804

cpu 1.225v
cpu ppl 1.9v
dram bus 1.64v

and disabled
cpu spreadspec
c1e
virt
cpu tm
speedstep
cstate

also ive been told to BCLK to 200 w/ the multiplier set to x18 = 3.6GHz w/ the x8 DRAM mult. = DDR3-1600. but then my ram is stock,
if anyone could work out were my problem is, would be greatfull cheers jason

RJC · 20 May 2012 at 17:59

Hello and welcome to the forum

I suspect your ram won't run much past 1600mhz, I am not sure on the performance gains the socket 1366 of running the ram any higher, I had my 920 @ 4ghz with the ram at 1600mhz.

setter · 20 May 2012 at 18:02

As RJC has said, the ram will be fine at 1600mhz, as you overclock it youll probably need a jump in qpi/vtt voltage.

jasoncourt · 20 May 2012 at 18:03

ok cheers, so what would be better,

cpu ratiox20 bclk180 with ram at 1440
or
cpu ratiox18 bclk200 with ram at 1603(bios came up with 1603)

i always got told higher cpu ratio is better,

cheers for the fast responce

RJC · 20 May 2012 at 18:06

You should be able to get 20 x 200 with the ram multiplier at 8x.

jasoncourt · 20 May 2012 at 18:08

setter said:
As RJC has said, the ram will be fine at 1600mhz, as you overclock it youll probably need a jump in qpi/vtt voltage.

so say i leave it at stock 1600mhz, do my voltages look ok

so how do my other voltages look,

cpu 1.225v
cpu ppl 1.9v
dram bus 1.64v

cheers

jasoncourt · 20 May 2012 at 18:09

RJC said:
You should be able to get 20 x 200 with the ram multiplier at 8x.

wouldnt that be 4ghz.. im on air coooled tuniq tower,

my idle is 45 and 15mins of prime hits 74c atm

setter · 20 May 2012 at 18:15

20x200, vcore will depend on your particular cpu
dram voltage at 1.66, this is fine as 1.65v isnt available in the drop down menu
qpi dram voltage, 1.300 ono, (ball park figure)
uncore clock, 2x ram speed +1, ie 2x1600 +1 = 3201
qpi link rate, keep below 800mts

This is a rough guide of how i oc'd my own 920 on the p6t deluxe v2 board.

jasoncourt · 20 May 2012 at 18:18

what bout the dram multiplyer, i think my temps will be to high for 20*200, whats the max i7 temp allowed?

wazza300 · 20 May 2012 at 18:20

you need more cpu imc voltage,esp if ocing the ram 1.3-1.35v is usually the norm

80c and under is fine on the cores

oh and manually set your uncore frequency,its ill be twice your memory multi and add one,so 8x mem multi would be 17x uncore freq and so on

setter · 20 May 2012 at 18:22

I hit 80c at 4ghz under 100% load, high but still fine. At 20x200, in the drop down dram speed menu, select 1600mhz, this is the x8 ram multi. A few screens of mine from a while back.

Note it states 21x multi, but ive since dropped to 20x, all settings are left as in the pics.

jasoncourt · 20 May 2012 at 18:28

cheers, looks like im getting somewere, whats cpu imc voltage, cheers ppl

setter · 20 May 2012 at 18:32

imc is qpi/dram voltage, different board manufacturers use different bios's so terms will have different names.

jasoncourt · 20 May 2012 at 18:37

ok ive done same as the pics, apart from cpu voltage is cpu 1.225v and qpi is a little higher than that, sould i be increaseing them? cheers

jasoncourt · 20 May 2012 at 18:40

oh blue screen, just inceased qpi and cpu volts to same at pics,

bluescreen was something todo with irq

setter · 20 May 2012 at 18:41

Cpu voltage will probably need a jump at 20x200, this of course will depend on your own particular cpu, set qpi at 1.300, same for vcore, test with a stress program such as prime95/LinX.

wazza300 · 20 May 2012 at 18:42

irq is usually memory

blue screen codes are at the end of a line of 0's

124=not enough qpi/vtt voltage
101=not enough cpu voltage

you can use cpu voltage offset,add a little at a time and cpu will downclock at idle then

jasoncourt · 20 May 2012 at 18:48

ok, so got the same setup as pics, and computer says no, it rebooted itself as i turned around. temps were at 82c when i last looked

jasoncourt · 20 May 2012 at 18:52

could it be going weird coz my pcie was set to 101. its alread overclocked edition?

wazza300 · 20 May 2012 at 18:52

if your trying to oc 1600mhz rated ram to 1800mhz you will need more qpi/vtt anything upto 1.4v+

youd be better off running ram at stock 1600mhz in my opinion,the voltage needed for 1800mhz just might not be worth it

pci-e freq should be fine at 100-103mhz