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EVGA 750i FTW Overclock Thread - Page 247

post #2461 of 2885
I finally got my psu back from rma,so I'm oc'ing now.What would you guys recommend I set my multi at to find my fsb max,6,7?
 
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post #2462 of 2885
Ok, I need some serious help. As of my current OC, I get slight video corruption (BSOD sometimes watching youtube videos, college humor videos, and sometimes during gaming). I've tried overclocking higher, or at least achieving the same CPU frequency through a different multi and FSB, but it simply won't work. Any help is appreciated.

In settings 1, 2, 3, etc., I bolded the values that I changed from the previous OC settings.

Current BIOS: SZ17
Thermal Management: Disabled
Intel Speedstep: Auto
C1E Function: Auto

Current OC: Stable, but video corruption from time to time
CPU Frequency - 3.0 GHz
Multiplier - 9x
FSB Memory - Linked
FSB Memory Ratio - Auto
FSM MHz - 1333
Actual Memory MHz - 1000

CPU Core - 1.343
CPU FSB - 1.30
Memory - 1.95
nForce SPP - 1.4
NF200 - Auto (1.2)

Attempt 2: BSOD on Windows loadup, "IRQL_NOT_LESS_OR_EQUAL" and "MACHINE_CHECK_EXCEPTION"
CPU Frequency - 3.2 GHz
Multiplier - 8x
FSB Memory - Linked
FSB Memory Ratio - Synced
FSB MHz - 1600
Actual Memory MHz - 800


CPU Core - 1.45
CPU FSB - 1.4
Memory - 2.1
nForce SPP - 1.5

NF200 - Auto (1.2)

Attempt 3: Hangs at Post (EVGA Logo), Post code 4E
CPU Frequency - 3.0 GHz
Multiplier - 8x
FSB Memory - Linked
FSB Memory Ratio - 3:2
FSB MHz - 1500
Actual Memory MHz - 1000


CPU Core - 1.45
CPU FSB - 1.4
Memory - 2.1
nForce SPP - 1.5
NF200 - Auto (1.2)

Attempt 4: Hangs at post during "Memory Testing" (Disabled the EVGA Logo), Post code 52
CPU Frequency - 3.0 GHz
Multiplier - 8x
FSB Memory - Linked
FSB Memory Ratio - Synced
FSB MHz - 1500
Actual Memory MHz - 750


CPU Core - 1.45
CPU FSB - 1.4
Memory - 2.1
nForce SPP - 1.5
NF200 - Auto (1.2)

Attempt 5: Loud constant beep on post, holds at Code 41, beep ceases and code flashes between 03 & FF
CPU Frequency - 3.2 GHz
Multiplier - 8x
FSB Memory - Linked
FSB Memory Ratio - 3:2
FSB MHz - 1600
Actual Memory MHz - 1066


CPU Core - 1.45
CPU FSB - 1.4
Memory - 2.1
nForce SPP - 1.5
NF200 - Auto (1.2)

__________________________________________________ ___________
Judging from the successful OC settings in the OP for the Q6600, all the voltages should be more than enough. I would try flashing the BIOS, but I don't have a floppy or any blank CDs (guess I'll have to go pick some up or borrow from a friend). Also, if I were to flash BIOS, do they keep an archive of all BIOS releases in case I want to downgrade back to SZ17?

So, any ideas?
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post #2463 of 2885
Just leave your memory unlinked and at or below stock. 1.45v SPP should be enough to get you up to 1800. As for your q6600, you're going to need to tweak those GTL lanes. This 750i and 780i boards have issues with GTLs and quads. Especially q6600s.

Check out this thread
http://www.evga.com/forums/tm.asp?m=...&mpage=1&key=&

It's a bit complicated so here's a post by me helping another member understand how to test the lanes.
http://www.overclock.net/intel-cpus/...ml#post6898193

I really need to quit putting off making a thread on GTL lane adjustments......
    
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post #2464 of 2885
Quote:
Originally Posted by PizzaMan View Post
Just leave your memory unlinked and at or below stock. 1.45v SPP should be enough to get you up to 1800. As for your q6600, you're going to need to tweak those GTL lanes. This 750i and 780i boards have issues with GTLs and quads. Especially q6600s.

Check out this thread
http://www.evga.com/forums/tm.asp?m=...&mpage=1&key=&

It's a bit complicated so here's a post by me helping another member understand how to test the lanes.
http://www.overclock.net/intel-mothe...ml#post6898193

I really need to quit putting off making a thread on GTL lane adjustments......
Thanks, +rep.

Could you please find the correct link for the 2nd link there, it just takes me back to OCN's front page.

*EDIT* Ok, so I read the EVGA thread, and I think I know what I'm doing, but not completely sure.

He said a FSB voltage of 1.2 should take you to at least 400 (which is what I am trying to accomplish right now), so I downed my FSB to 1.2v. Also, since I'm upping my CPU from 3.0 to 3.2 GHz, I upped the voltage from 1.343 to 1.39 I believe, to make sure I'm getting enough voltage.

I set all the GTL lanes to +50, and I'm booted right now at 3.2 GHz (FSB of 1600) with Linked & Synced RAM running at 800 MHz.

So now, I guess I am supposed to run Prime 95 (how long?) til the core(s) fail(s), and then continue to increase the GTL lanes by 5 or 10 until I can run Prime95 stable. Record these numbers.

Then I continue to keep adding 5 mV until the core(s) fail(s) in prime95 again. Record these numbers. Then I find the mid point (rounded up) between the 2 recorded GTL values, and thats my final GTL value.

Correct?

And after all of that is done, I guess I should try lowering my CPU voltage as running Prime95 to find the lowest, yet still stable, voltage possible. Correct?
Edited by RapidFireGT - 9/18/09 at 11:11pm
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post #2465 of 2885
Quote:
Originally Posted by RapidFireGT View Post
Thanks, +rep.

Could you please find the correct link for the 2nd link there, it just takes me back to OCN's front page.

*EDIT* Ok, so I read the EVGA thread, and I think I know what I'm doing, but not completely sure.

He said a FSB voltage of 1.2 should take you to at least 400 (which is what I am trying to accomplish right now), so I downed my FSB to 1.2v. Also, since I'm upping my CPU from 3.0 to 3.2 GHz, I upped the voltage from 1.343 to 1.39 I believe, to make sure I'm getting enough voltage.

I set all the GTL lanes to +50, and I'm booted right now at 3.2 GHz (FSB of 1600) with Linked & Synced RAM running at 800 MHz.

So now, I guess I am supposed to run Prime 95 (how long?) til the core(s) fail(s), and then continue to increase the GTL lanes by 5 or 10 until I can run Prime95 stable. Record these numbers.

Then I continue to keep adding 5 mV until the core(s) fail(s) in prime95 again. Record these numbers. Then I find the mid point (rounded up) between the 2 recorded GTL values, and thats my final GTL value.

Correct?

And after all of that is done, I guess I should try lowering my CPU voltage as running Prime95 to find the lowest, yet still stable, voltage possible. Correct?
You got the idea.

After you run thru the GTLs try lowering vFSB first. Most likely the vcore will not change.

Here's the link I broke eariler. http://www.overclock.net/intel-cpus/...ml#post6898193
    
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post #2466 of 2885
Quote:
Originally Posted by PizzaMan View Post
You got the idea.

After you run thru the GTLs try lowering vFSB first. Most likely the vcore will not change.

Here's the link I broke eariler. http://www.overclock.net/intel-cpus/...ml#post6898193
Thanks for the link

So I was wrong in assuming that all lanes get the same mV value? I need to test each one individually?
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post #2467 of 2885
Quote:
Originally Posted by RapidFireGT View Post
Thanks for the link

So I was wrong in assuming that all lanes get the same mV value? I need to test each one individually?
yeah. they all acomplish different things for different cores so their values will vary on what is needed on each lane.
    
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post #2468 of 2885
hey guys i have a problem....i cant go over 3.4Ghz,and even the BOOT post doesnt show if i go over 3.4Ghz....should i update my BIOS?i still have the same bios that came with the mobo(SZ1G)
    
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post #2469 of 2885
Quote:
Originally Posted by computerfreak09 View Post
hey guys i have a problem....i cant go over 3.4Ghz,and even the BOOT post doesnt show if i go over 3.4Ghz....should i update my BIOS?i still have the same bios that came with the mobo(SZ1G)
New BIOS wouldn't hurt.

You might need to do like posted above and tweak the GTL lanes.

Also, I see in your sig you are having issues with FSB holes(straps). The 7 series boards doesn't normally have to many issues with straps like the 6 series did. What FSBs are you having issues with?

Also, would you post your BIOS settings?
    
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post #2470 of 2885
isnt GTL dangerous?

well like in the range of 3.5Ghz-3.8Ghz i cant pick cuz of instablity

alright hold on
    
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