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E6750, not impressed

Justintime

Justintime

Justintime

Soldato
Joined
24 Jul 2006
Posts
8,876
Location
Hoddesdon, London, UK
Have tried 4 so far and none would even POST 3.4GHz on the same volts that my old L629B E6600s would run rock solid which is 1.3v, all needed at least 1.35v to POST and 1 needed 1.425v to run stable (orthos etc..) and two did better with 1.3675v while the last was a stinker at 1.485v needed. Thought G0 was supposed to be better? :D Seems the rumor is true about the speed binning, the one 6850 i've had my hands on only needed 1.275 for 3.4Ghz and quite comfortably did 3.7Ghz on 1.365v
 
truebluecfc said:
Well my E6600 needed 1.55 to get to 3.6GHz.
Click to expand...

The 2 L629B E6600 i have will do 3.6 on about 1.35v and 1.375v, they're hot runners though so i keep em at 1.3125v and 1.3v for 3.4GHz (weird that one cpu will do 3.6Ghz on less volts but need more than the other for 3.4Ghz eh? :D)
 
Justintime said:
Have tried 4 so far and none would even POST 3.4GHz on the same volts that my old L629B E6600s would run rock solid which is 1.3v, all needed at least 1.35v to POST and 1 needed 1.425v to run stable (orthos etc..) and two did better with 1.3675v while the last was a stinker at 1.485v needed. Thought G0 was supposed to be better? :D Seems the rumor is true about the speed binning, the one 6850 i've had my hands on only needed 1.275 for 3.4Ghz and quite comfortably did 3.7Ghz on 1.365v
Click to expand...


4GB on E6850 here, wound back to 3.9GB as of cooling aint extreme its high quiet air. (*Noctua NH-U12F with a my own fan fitted)

Whats your mobo, you may have volts droop.
 
I was tempted to sell my L629B E6300 in favour of an E6750. If the speedbinning between the 6750 and 6850 is that substantial, I think I'll leave it :eek:
 
helmutcheese said:
Whats your mobo, you may have volts droop.
Click to expand...

Bad Axe, Bad Axe 2, DS4 rev1, P5B, DS3 rev1, P35 DS3, Striker extreme

pick your choice :D Different psus too. All exhibit the same. Also if Vdroop was to blame, why would the E6600s clock so well? Its obviously something with the 6750s and i aree that 4 is not a big amount and it could be bad luck but it seems is not only me.
 
Striker E as I have, you have major volts drop, simple pencil mod stops this and volts will be solid.

I could not get past 3.9GB at AUTO or any manual volts setting up and at 1.6V it would droop to 1.55V on load, now there is no droop from idle to load, but I aint verified volts in bios is same as actual volts on my multimeter read from measuring point on mobo as its still set to AUTO, would need set to say 1.3/1.4/1.5/1.6 and verify each.

Well as to your last point, I did get to 3.8GB+ stable with droop but lot of messing about, you may have bad CPU but do the volts droop mod to be fair.
 
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Yep but thats just one of a few boards, same result with all :) They run the E6600s fine with no notable vdroop including the Striker, what're u using to monitor voltages?
 
Justintime said:
Yep but thats just one of a few boards, same result with all :) They run the E6600s fine with no notable vdroop including the Striker, what're u using to monitor voltages?
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CPU has nothing to do with it, that Mobo and others are known to have voltage droop only the new Blitz's have a Anti Droop setting in bios.

You cant trust software unless verified by a multimeter but you can use as a guide and still see droop even if scale is not accurate.

Use Speedfan latest Beta (supports these mobos now) or Asus Probe II, just look at CPU volts with Othos open, then run stress test and see volts droop (takes few seconds depending on APP's update rate, normally 4secs).

Its all over Google if you search for these Asus mobos and Volts Droop, same mod for ours as the P5K models.
 
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I get you mate, but even with a Vdroop, the point i'm making is that the silicon is not on par with my older E6600s, if it was actually better then obviously it'd oc better and at least run the speeds my older Conroes did. Its all down to luck but i would've expected better especially with 4 cpus lol. as i said, this result is across the board with all the mobos in question, different psus video cards and RAM as well in all so nothing remains the same, the older E6600s just OC much better. Hopefully this is a one off bad batch but it seems its not only me seeing rubbish ocs with the 6750 and lower.
 
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np probs here with my 6750, runs 24/7 3.6ghz, had it @ 3.8ghz orthos 8hr+ stable, but that was with 1.50v on cpu, 2.2 on ram . didnt like temps when was running, cpu was 63-68c full load, pmw was 65c+. need to try it again as have added another 120 mm fan that blows over cooler & pwn.
*** mine :D
 
How were you taking the temps? Might be higher than you think mate, not sure if TAT or Coretemp etc.. is fixed to read them right yet. Got one atm at 3.2Ghz and its saying 39C loaded at 1.35v and a Big typhoon sink (TAT load) :D
 
temps @ 3.6 are reading 29-31c @ idle, full load never goes over 53c, but as said when running @ 3.8 had to increase the volts, that saw temp get high :( taking readings from everest, abit guru & coretemp, all within 1-2 degrees of each other
cooling with a sycthe, then 3 x 120mm fans in case.
played around with fans on lain li case, added one to the side. the now trying it with the front & bak sucking air in & side fan blowing out. temsp have droped about 2 degrees on cpu, but on the pwm has drop 5c, realy happy with that, so gonna try 3.8 again & see what temps like then :)

edit: i know about temps not getting read right, latest bios for my abit pro
seems to be reading right now, so mainly been going with temps from the uguru
 
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Justintime said:
Its all down to luck but i would've expected better especially with 4 cpus lol
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Yeah you certainly stacked the odds in your favour, did your homework and bought four CPU's, unlucky m8!

In your shoes I would have been expecting some 3.6GHz action from one of them?

What are the codes from the CPU? are they all from the same batch/factory etc?
 
Client rigs, just testing out the ability of the cpus before they live as stock runners :D Would've kept a good clocker though.

3x L719A, L722A
 
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