i7 950 + Asus Rampage III Gene + Corsair Vengeance 12GB

[sliice]

hi guys,

Quick system info - windows 7 64bit - i7 950 - Asus Rampage III Gene - Corsair Vengeance 12GB

seem to be having a little bit of a nightmare overclocking my cpu and getting to run stable,

How i started the process;

1. Changed the ai overclock tuner in the extreme tweaker menu from auto to manual.

2. Changed the cpu multiplier [cpu ratio] to 20.

3. Disabled the cpu turbo power limit.

4. Changed the qpi [bclk freq.] to 200. [to get a the cpu to 4ghz]

5. Changed the dram freq. to as close to 1600mhz as possible, to which the ram is rated at.

6. Enabled cpu load line.

7. Set the vcore [cpu volage] to 1.3875.

8. Set the cpu-pll to 1.8.

9. Set the qpi-dram core voltage to 1.5.

10. Set the ioh voltage to 1.2.

11. Set the ich voltage to 1.5.

12. Set the dram-bus voltage to 1.6.

13. Disabled cpu spread spectrum + pcie spread spectrum.

With these changes the the computer boots up fine, but fails in prime95 stress test after about 5 minites, and crashs to the blue screen, or black and then restarts.

I have over clocked before so have a limited knowledge of doing it, but using this much ram with such a high overclock seems to be a little to challenging.

Please advice the changes that i need to do to get it running stable.

Oh one more thing a what is the maximum 100% load temp that would be exceptable.

If any more infomation is required then pls ask me for it...

 

[cbiltsouris]

the cpu voltage seems really high, ive got mine on 1.28v, you do have alot of ram, what temps are you getting? my max load temp is 51 degrees and min is 36-34 degrees

 

[Sihastru]

vCore 1.3 - 1.375, you still have TURBO, HT and C-states on so you need a high voltage for those, you should first try to get it stable with TURBO, HT and C-states off (EIST included)

CPU PLL 1.84

QPI DRAM ~1.335, absolute MAX 1.4

QPI PLL 1.8 - 1.22

IOH Core 1.18

ICH Core 1.14 (1.5 is reeeeeeeeeaaaaaaly high)

ICH I/O 1.5

DRAM Voltage 1.5 - 1.65, you should be fine closer to 1.5, depends on the RAM here, and you have the low voltage kind

VERY IMPORTANT: Uncore Clock Speed >= 2x SPD, meaning for 1600MHz RAM, you'll need at least 3200MHz Uncore

What is the rated SPD @ 1600 for the RAM? You need to adjust those manually.

 

[sliice]

the cpu voltage seems really high, ive got mine on 1.28v, you do have alot of ram, what temps are you getting? my max load temp is 51 degrees and min is 36-34 degrees

Thanks for the response,

From what i can remember the temps were something like;

max load 75 degrees

idle load 45 degrees

Using a Corsair Hydro H50-1 High-Performance CPU Watercooler (Socket LGA775/1156/1366/AM2/AM3) [CWH50-1] cpu cooler.

 

[sliice]

vCore 1.3 - 1.375, you still have TURBO, HT and C-states on so you need a high voltage for those, you should first try to get it stable with TURBO, HT and C-states off (EIST included)

CPU PLL 1.84

QPI DRAM ~1.335, absolute MAX 1.4

QPI PLL 1.8 - 1.22

IOH Core 1.18

ICH Core 1.14 (1.5 is reeeeeeeeeaaaaaaly high)

ICH I/O 1.5

DRAM Voltage 1.5 - 1.65, you should be fine closer to 1.5, depends on the RAM here, and you have the low voltage kind

VERY IMPORTANT: Uncore Clock Speed >= 2x SPD, meaning for 1600MHz RAM, you'll need at least 3200MHz Uncore

What is the rated SPD @ 1600 for the RAM? You need to adjust those manually.

Thanks for the response,

My ram info as requested;

- Each three module set is tested at 1600MHz

- Vengeance heat spreader for styling and performance

- Packaged together immediately following system test

- Tested together at 1600MHz, Vdimm = 1.50V, at latency settings of 9-9-9-24 on Intel X58 DDR3-based motherboards.

- SPD programmed at: JEDEC standard 9-9-9-24 values at 1333MHz.

- XMP 9-9-9-24 values at 1600MHz, 1.50V

- 6144 Megabytes of DDR3 memory

- Three matched 4GB modules

- 100% tested at 1600MHz in X58-based motherboards

- Supports Intel Extreme Memory Profiles (XMP)

- Lifetime Warranty

I will amend the to the voltages that you have suggested, and will turn off the TURBO, HT and C-states features, and try again.

Will keep you posted.

 

[sliice]

Revised process;

c-state, c1e support + speedstep tech set to disable.

ht tech set to enable.

1. Changed the ai overclock tuner in the extreme tweaker menu from auto to manual.

2. Changed the cpu multiplier [cpu ratio] to 20.

3. Disabled the cpu turbo power limit.

4. Changed the qpi [bclk freq.] to 200. [to get a the cpu to 4ghz]

5. Changed the dram freq. to as close to 1603mhz.

5a. Changed uclk freq. to 3208mhz.

5b. spd 9-9-9-24

6. Enabled cpu load line.

7. Set the vcore [cpu volage] to 1.28.

8. Set the cpu-pll to 1.855.

9. Set the qpi-dram core voltage to 1.4.

10. Set the ioh voltage to 1.2.

10a. ioh pcie 1.508 [auto setting]

11. Set the ich voltage to 1.2.

11a. ich pcie 1.51050 [auto setting]

12. Set the dram-bus voltage to 1.6.

13. Disabled cpu spread spectrum + pcie spread spectrum.

booted-up but failed less than 10 seconds in prime95.

 

[kilobravo]

Revised process;

c-state, c1e support + speedstep tech set to disable.

ht tech set to enable.

1. Changed the ai overclock tuner in the extreme tweaker menu from auto to manual.

2. Changed the cpu multiplier [cpu ratio] to 20.

3. Disabled the cpu turbo power limit.

4. Changed the qpi [bclk freq.] to 200. [to get a the cpu to 4ghz]

5. Changed the dram freq. to as close to 1603mhz.

5a. Changed uclk freq. to 3208mhz.

5b. spd 9-9-9-24

6. Enabled cpu load line.

7. Set the vcore [cpu volage] to 1.28.

8. Set the cpu-pll to 1.855.(you may need as high as 1.9)

9. Set the qpi-dram core voltage to 1.4.(you need to go 1.48>1.55)

10. Set the ioh voltage to 1.2.

10a. ioh pcie 1.508 [auto setting]

11. Set the ich voltage to 1.2.

11a. ich pcie 1.51050 [auto setting]

12. Set the dram-bus voltage to 1.6.

13. Disabled cpu spread spectrum + pcie spread spectrum.(set to enabled)

booted-up but failed less than 10 seconds in prime95.

And you seriously need cpu-z and realtemp to monitor vcore-voltage and realtemp to read temps.

And what cooler sits on your cpu?

 

[sliice]

And you seriously need cpu-z and realtemp to monitor vcore-voltage and realtemp to read temps.

And what cooler sits on your cpu?

Seriously.......... i know i said that i had "limited knowledge" of overclocking but pls dont take me for some kind of noob!

I have all the appropriate software to mointor my system thanks!

Oh and im using a Corsair Hydro H50-1 High-Performance CPU Watercooler (Socket LGA775/1156/1366/AM2/AM3) [CWH50-1] cpu cooler as stated above!

 

[sliice]

Update,

I have given up for today, but this is what i found so far;

If i use a higher cpu multiplier like 22-23, with a lower bclk freq like 180-190 the system becomes far more stable. However the system still crash to blue screen after 4-5 minites on prime95.

Any ideas...

Right now the systems running very stable @;

CPU - 3.531mhz 160.5x22

RAM - 802.5mhz [2:10] 9-9-9-24-128-1t

Voltage;

CPU - 1.250v

CPU PLL - 1.852v

QPI/DRAM Core 1.336v

IOH - 1.224v

IOH PCIE - 1.508v

ICH - 1.217v

DRAM Bus - 1.607v

Temperature;

CPU - 31c idle + 63c max load

MB - 27c

ICH - 49c

IOH - 67c

 

[sliice]

Last update of tonight,

Right now the systems running very stable @;

CPU - 3.712.5mhz 161.4x23

RAM - 807.1mhz [2:10] 9-9-9-24-128-1t

Voltage;

CPU - 1.316v

CPU PLL - 1.905v

QPI/DRAM Core 1.369v

IOH - 1.263v

IOH PCIE - 1.508v

ICH - 1.257v

DRAM Bus - 1.607v

Temperature;

CPU - 46c idle + 71c max load

MB - 27c

ICH - 51c

IOH - 73c

Thanks for all your help so far, lol!

might hit 4000mhz one day.

 

[Sihastru]

The reason for instability is the fact that you have HT/TURBO on, with insufficient voltage. It just needs a lot of extra voltage for those, especially TURBO, that will increase the CPU FREQ multiplier to 24 or even 25. x25 not so often, but x24 every time there is higher load.

Also note that HT on will increase your full load temperatures considerably.

But you do seem to be on the right track. So good luck

 

[Pyr0]

drop your ram to 1.5v, as that's what it's rated for

cpu pll shouldn't need touching from default 1.8

do you really need to bump the ich and ioh voltages that much for stability?

 

[sliice]

The reason for instability is the fact that you have HT/TURBO on, with insufficient voltage. It just needs a lot of extra voltage for those, especially TURBO, that will increase the CPU FREQ multiplier to 24 or even 25. x25 not so often, but x24 every time there is higher load.

Also note that HT on will increase your full load temperatures considerably.

But you do seem to be on the right track. So good luck

Firstly thanks for continuing input to my thread, it's really appreciated.

But;

If i turn hyper treading off doesnt that reduce the power of the cpu?

I have disabled the cpu turbo power limit option, is this what you refer to as the "TURBO"?

 

[sliice]

drop your ram to 1.5v, as that's what it's rated for

cpu pll shouldn't need touching from default 1.8

do you really need to bump the ich and ioh voltages that much for stability?

I will try dropping DRAM Bus to 1.5v + change the cpu pll to 1.8v, i have ago at lowering the ich + ich voltages will post results.

 

[sliice]

Latest update,

Right now the systems running stable @;

CPU - 3.712.5mhz 161.4x23

RAM - 807.1mhz [2:10] 9-9-9-24-128-1t

Voltage;

CPU - 1.316v

CPU PLL - 1.799v

QPI/DRAM Core 1.369v

IOH - 1.118v

IOH PCIE - 1.508v

ICH - 1.111v

DRAM Bus - 1.515v

Temperature;

CPU - 42c idle + 68c max load

MB - 20c

ICH - 43c

IOH - 57c

Wow, after adjusting voltages as recommended by pyro the system stills runs stable but the temperatures have drop drastically.

Will leave prime95 running tonight.

Will update tomorrow.

 

[tinytomlogan]

You do not need to turn off HT but turbo will need to be disabled. I think if you turn speedstep off it will get disabled automagically on that mobo.

 

[sliice]

Latest update,

Right now the systems running stable @;

CPU - 3.712.5mhz 161.4x23

RAM - 807.1mhz [2:10] 9-9-9-24-128-1t

Voltage;

CPU - 1.316v

CPU PLL - 1.799v

QPI/DRAM Core 1.369v

IOH - 1.144v

IOH PCIE - 1.508v

ICH - 1.111v

DRAM Bus - 1.515v

Temperature;

CPU - 42c idle + 68c max load

MB - 26c

ICH - 49c

IOH - 64c

On the last settings system wasnt stable it had passed few hours of prime95 but failed in game with memory crash to blue screen i slighted rasied the the ioh to 1.144v from 1.118v, and seems to be running fine now!

 

[sliice]

You do not need to turn off HT but turbo will need to be disabled. I think if you turn speedstep off it will get disabled automagically on that mobo.

Having alittle trouble trying to find the intel speedstep option, but am going to have a look for it now! [new mobo]

with it off hopefully be able to lower the cpu voltage...

 

[sliice]

Having alittle trouble trying to find the intel speedstep option, but am going to have a look for it now! [new mobo]

with it off hopefully be able to lower the cpu voltage...

Ok found the intel speedstep was diasabled ages ago long with c1e + c-state options.

Lowered cpu voltage to 1.263v from 1.316v passed prime95 for hour's test, will test longer tonight. Maximum temp under load was 70c, idle is now down in the low 40's.

Will have a play tomorrow and update!.

 

[sliice]

General Update,

Right now the systems running stable @;

CPU - 3.712.5mhz 161.4x23

RAM - 807.1mhz [2:10] 9-9-9-24-128-1t

Voltage;

CPU - 1.197v

CPU PLL - 1.799v

QPI/DRAM Core 1.323v

IOH - 1.144v

IOH PCIE - 1.508v

ICH - 1.111v

DRAM Bus - 1.515v

Temperature;

CPU - 37c idle + 58c max load

MB - 23c

ICH - 42c

IOH - 50c

Having trouble getting the cpu to run any faster than 3.712.5mhz 161.4x23, if i change the cpu multiplier the system becomes very unstable regardless to how much voltage i run though it. Changing the bclk freq [bus speed] to anything over 161.4mhz has the same effect, the ram however is very strong be able to run 60-100mhz over the recommended 1600mhz good going for 12gb at factory voltage.

So im looking for some ideas on what you guys think would help me raise the cpu to a high clock. Really wanna aim for 4000mhz.

Thanks..