Overclocking my E6750 - 3.8GHz so far :D

[Dadofamunky]

Originally posted by: sebfrost
Well switching it over certainly made a difference - about 25 to 50% noticable increase in framerate, and score now up to 11623.
(running at 3.7GHz, 3.8 turned out not to be stable so I'm back to 3.7 for now)

Bingo! Hey, mine's faster but not for long

 

[mrdavidpham]

hey phunkone, are you overclocking your video card at all? I overclock my GT and it maxed out at 13700 in 3Dmark06 with a e6750@3.8

 

[Phunk0ne]

Originally posted by: mrdavidpham
hey phunkone, are you overclocking your video card at all? I overclock my GT and it maxed out at 13700 in 3Dmark06 with a e6750@3.8

Yup, Overclocked it, but because of WHQL 169.25 drivers, I cannot use rivatuner to independently overclock the shaders, so all I could overclock with the help of nTune was the GPU's CPU and RAM
Stock CPU @ 670MHz - OC @ 785MHz
Stock RAM @ 1944MHz - OC @ 2100MHz

the GPU's ram still has some OC room left, but I felt that this is more than sufficient for an overclock. the GPU's CPU already reached its limit, @ 790MHz, 3DMark06 would show artifacts. But I am more than happy. Upgraded from a X1900XT 512MB.

 

[mrdavidpham]

ok i lied, haha cpu is at 3.6 ghz. So I guess the difference between a 8800gt and a 8800gts isn't much of a difference then. My GPU is at 740mhz and Ram is at 2100Mhz and shader is 1840.

My results

 

[mrdavidpham]

oh yeah another problem I'm having, I can prime all day at 3.6ghz and its stable but when I start to game. The computer just freezes after an hour of intense gaming. I touch my northbridge heatsink and its really hot to the core. So P35 northbridge passive heatsink just isn't good enough huh?

My specs:
Abit IP35-E & E6750
Corsair 2x1GB 12-4-4-4
8800GT @ 740/2100

 

[Phunk0ne]

my northbridge wont get any warmer than 41C. But I did remove the NB heatsink when I reworked the internals of my pc and removed the gunk that came attached with it, cleaned and re-applied AS5 onto it.

 

[j0j081]

this cpu ocs to 3.2 ghz like it ain't no thing. Doesn't even seem to have increased my temps any. So looks like 3.4 is the max you can do on stock voltage?

 

[Tweakin]

Originally posted by: sebfrost
I've already got the ram as slow as it goes (2 x 425MHz = 850Mhz).

The memory I bought is this stuff http://www.overclockers.co.uk/...t.php?prodid=MY-019-GS (G.Skill 4GB DDR2 PQ PC2-6400C5 (2x2GB) CAS5 F2-6400CL5D-4GBPQ)

I tried bumping the DDR2 voltage up 0.20v and it made no difference. I'm adding a complete log of my progress to the original post in this thread.

Here's a dull observation - Core Temp refuses to return a temp of 53°C, I'm seeing a lot of 52 in my logs, and the occasional 54, but never 53. Told you it was dull

I don't think your memory is a problem...I have the same memory but a different board, IP35-E. and have taken it to 900 @ 5-5-5-15 2t. I'm currently running it at 850 with an e6750. My temps are way different then yours but I'm only pushing 1.300 into the chip.

 

[Tweakin]

Originally posted by: mrdavidpham
oh yeah another problem I'm having, I can prime all day at 3.6ghz and its stable but when I start to game. The computer just freezes after an hour of intense gaming. I touch my northbridge heatsink and its really hot to the core. So P35 northbridge passive heatsink just isn't good enough huh?

My specs:
Abit IP35-E & E6750
Corsair 2x1GB 12-4-4-4
8800GT @ 740/2100

I wouldn't call that a stable system then....

 

[Dadofamunky]

Originally posted by: Yoxxy
Seems like 3.6 is a hardwall for these chips. You can get a bit past but you start to see diminishing returns where you have to add serious vcore to take it any higher.

He's right, that's exactly what occurred for me. I did get a 3.7 GHz stable under OCCT and Prime, but decided to throttle it back to 3.6 because a) I wanted to run voltage within spec; b) I want decent temps; c) I'm upgrading to 8 GB of RAM and need to keep it solid. So yeah, 3.7-3.8 appears to be the max unless you do phase-change cooling or some other ridiculous solution, and then why wouldn't you just buy an E8400?

 

[Dadofamunky]

Originally posted by: j0j081
this cpu ocs to 3.2 ghz like it ain't no thing. Doesn't even seem to have increased my temps any. So looks like 3.4 is the max you can do on stock voltage?

Yeah, 3.2 on 6750s is pure theft.

 

[bryanW1995]

I haven't heard of an e6750 yet that wouldn't do 3.2 on all stock settings

 

[bobjc]

also a newb to o'clocking .built system last month and as soon as I had vista installed o/c to 3.2 and was stable with stock cooling.added acf7 pro and clocked to 3.6 stock volts but but a glitch gaming and backed down to 3.4 and is stable / ran prime 95 9 hours and no issues.will try 3.6 again with a bump in volts and test with prime95 again.whats the limit with these procs?

 

[OCGuy]

I dont give too much credibility when people say "stock voltages." Many people who are new to the OC world dont realize that even though all they change is FSB, the default AUTO settings are on. :/

 

[Dadofamunky]

Originally posted by: bobjc
also a newb to o'clocking .built system last month and as soon as I had vista installed o/c to 3.2 and was stable with stock cooling.added acf7 pro and clocked to 3.6 stock volts but but a glitch gaming and backed down to 3.4 and is stable / ran prime 95 9 hours and no issues.will try 3.6 again with a bump in volts and test with prime95 again.whats the limit with these procs?

Nice job. Bump the northbridge voltage a notch or two as well, it stabilizes the 3.6 GHx OC effectively. Assuming your memory can do it. I think others may have mentioned this; it seems the 6750s hit a wall at 3.7-3.8. I found mine strictly limited to 3.7 GHz stable. I throttled it back to 8x450 because I'm installing another 4 GB of RAM tomorrow and wanted to limit the heat and voltage and run completely within specs. But heck, a 38% OC ain't bad for a $200 CPU. Mine punches way above its weight now at 3.6. If I was gonna get greedier I'd get an e8400/e3110. But I'm not complaining.

 

[badnewcastle]

Originally posted by: bryanW1995
I haven't heard of an e6750 yet that wouldn't do 3.2 on all stock settings

Mine won't...

There you just heard of an e6750 that won't do it at stock...

 

[j0j081]

Originally posted by: badnewcastle

Originally posted by: bryanW1995
I haven't heard of an e6750 yet that wouldn't do 3.2 on all stock settings

Mine won't...

There you just heard of an e6750 that won't do it at stock...

looks like it does in your sig.

 

[bobjc]

Thanks for the info, havn't had time to tinker yet - have to wait for the weekend. Will let you know what happens.

 

[badnewcastle]

Originally posted by: j0j081

Originally posted by: badnewcastle

Originally posted by: bryanW1995
I haven't heard of an e6750 yet that wouldn't do 3.2 on all stock settings

Mine won't...

There you just heard of an e6750 that won't do it at stock...

looks like it does in your sig.

My sig is only representing what CPU-Z says, the NB is actually manually set 1.4v and the Core Voltage is set to +.0500v I have changed my sig.

 

[j0j081]

well just as the OP's mine works at 3.4 on stock voltage. Think I'm gonna keep it at 3.2 though because didn't see much improvement in anything I was doing but my temps were a couple degrees higher.

 

[Rubycon]

It's akin to stealing candy from a baby but once you realize intel is no baby. When AMD kicks the bucket intel will come back with severe revenge against all that stole from them. The machines will be rising soon just like Sarah Connor said. Terminators will have Intel Inside! :Q

:laugh: