I clocked her to 4.8 and Prime 95, stable temps where mid 60C during the test. I set the vCore to 1.35 and OCed to 5.0 and primed it for 4 hours and I got a blue screen saying WIndows needed to shut down or something. How do I knopw what happened, I need to know if it was my temps or what. Should I shy away from 5.0 ghz with this chip, seems very very high though I'd like to have 5.0. Im running XFX 750 Single Rail PSU, 8 gig DDR3 Ram 9 9 9 9 24 @ 1600 mhz + GTX 480 and the Noctuna D-14 HS. let know what u guys think, thanks!

It's more than likely not enough vcore.

More vcore and/or cpu pll will do the trick... unless your cpu hits a multiplier wall. My 2600k doesn't really like 51 all the time, so I've got it back at 50 for now. To get it that high I have to have a vcore around 1.45. Not too worried about degradation. These chips are cool and cheap to replace, so no biggy if it dies in a few months, although I doubt that will happen.

- and the temps are?

Same here, had a first chip which hit a wall at 48, vcore for stable prime95 operation was needed 1.45v.So I decided to order a 2nd one, while returning first, and behold:5ghz with 1.48 or 1.45. I can even hit 5.2, but right now priming at 5.0. See my own thread just on this forum.I don't really care about degradation too, if it dies in couple of months, I will buy a new one, who cares... I can tell my missus it just broke - things break :)As long as my temps are not hitting 80c, I'm ok with it. Got watercooling which is really cooling the chip down well, and I try staying around 72-73c max.I would like to run HT-on, but the question is what temps am I going to be hitting. And if I need more vcore for ht-on...All in the test phase now.As for yours - crank that vcore up!! :Applause: (and watch the temps)

K higher vCore + watch temps GOT IT !cheers

Good timing on this thread. I just ran OCCT for 1+ hr to make sure my non oced system is stable. No errors, temps around 50 max.Ron, did you just change the vcore to 1.35 and upped the multiplier? Is it that easy?

Oh and btw. see that you keep Load Line Calibration on one below Extreme, I think its Ultra High.Going extreme is going to shoot temps up.Ryan, I see you have Gigabyte board, but this might help you understand what goes under the hood:http://www.xtremesystems.org/forums/showthread.php?t=265398

Good timing on this thread. I just ran OCCT for 1+ hr to make sure my non oced system is stable. No errors, temps around 50 max.Ron, did you just change the vcore to 1.35 and upped the multiplier? Is it that easy?

Ya man, I'd set the RAM manually and for good measure Prime 95 it stock just to make sure everything is good then go say vCore @1.40 Mult @ 50 and Prime 95 it, watch those temps though.

1.4 is probably cutting it way too short for 5Ghz. Expect something like 1.45-1.5 for 5Ghz and stable. (according to many forums)

I'm now at 1.38 for 4.8, but I only did IBT for stress testing. It's stable for everything so far, including long sessions of FSX. Temps are good and Hwinfo 32 is reporting vcore of about 1.352 at full load with IBT. I'll probably try Prime95, but even if it fails at 1.38 I might leave it there anyway if everything else is working good. Maybe we could post some of the settings we're using to achieve our OC to give some references.

OK guys, I have vcore @ 1.415 @ 5.0ghz and I've been running Prime95 and my max temp under load is 78C.......too high right. should I just keep her at 4.8 or 4.9, I can't burn this CPU!

OK guys, I have vcore @ 1.415 @ 5.0ghz and I've been running Prime95 and my max temp under load is 78C.......too high right. should I just keep her at 4.8 or 4.9, I can't burn this CPU!

A tad warm... My comfort zone is around 70C with these SB chips.Also, I was able to get 4.5 GHz with just a few settings different from standard. I'm noticing a huge difference between stock and 4.5 lol! I doubt the extra 500mhz would do anything so im just gonna sit at 4.5 with 60C temps and be happy!Some other fun things I've been doing are loading LOD of 6.5 and 8.5 - wow those make a big difference in texture loading. 8.5 takes a long time to load, not too bad with my shiny SSD though ;)

After more testing I went back to 4.7 with 1.355 vcore. Passes prime and IBT with quite a bit lower temps than 1.38 and 4.8(actually failed prime95 after a few minutes). I also went in FSX to check the difference, and the temps were at least 5 degrees cooler at 4.7 and I couldn't see any visual differences at all with the fps locked at 30.Max temp at 4.7 with prime is about 60. I guess I'll stay there, I'm guessing the lower the vcore and temps the better, especially that the difference between 4.7 and 4.8 is pretty much non existent for me in FSX. Tweaking and overclocking was fun though...Now time to do some flying.

OK guys, I have vcore @ 1.415 @ 5.0ghz and I've been running Prime95 and my max temp under load is 78C.......too high right. should I just keep her at 4.8 or 4.9, I can't burn this CPU!

Ron, if your Priming gives you 78c, then you are getting not more than 65c in FSX, which is OK! Don't forget: Priming is a really hard test for the CPU, and I always give it a lot of leverage when it comes to temps. I say hardlimit 80c, above that even with WC I don't allow it... if it crosses, go down or try tweaking CPU PLL Voltage to lower the temp - also lower LLC a bit to see if it stays stable, this will also give you a degree or two.I turned off HT so it doesn't heat up as much, and since then it's great.Look at the latest result in my thread... 53fps on FSXMark11, which I find really good for this CPU.I will make myself two profiles in EFI, one for HT-on 4.8Ghz, and 2nd HT-off 5Ghz, when I find stable numbers for both.Now this I call fun!