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SB-E [C2] Stepping

I'm finding my C2 is having a hard time holding anything above 4Ghz on a H100... It's much more suseptable to board / VRM temps I've found. I'm looking into moving the cpu and board over to a custom water option to get the higher clocks and cooler overall temps.
 
What motherboard you got Elric?

I'm leaning towards a 3820 now then and putting the rest towards a GPU, beats having a hex core hindered by heat I think.

My case is a Silverstone FT-02.
 
Mine is the Sabertooth X79. I wasn't looking to get the R4E as I wasn't chasing high clocks, Around the 4.4-4.5 would be fine.

Bear in mind, I could just have a stinker of a chip, with the biggest bow curved IHS and my H100 and board may also be the friday afternoon builds...

EDIT: If you're looking for this to be just a game PC, then honestly, just stick with a SB 2500/2600/2700K or wait for Ivy. These Hex core units are completely overkill for a game PC.
 
Ye I've had a 2700K (decent one too) but I've wanted a LGA2011 setup for a while the platform itself is much better imo and I was all set for 3930K until the 3820 appeared.

My main goal was to move away from watercooling, I thought 4.2-4.4 would be possible on air though tbh.

I'm surprised you're suffering with heat on the Sabertooth doesn't it have 2 fans? I've only got the standard P9X79. :o
 
From what I can see of it the southbridge chipset / fan is not a problem, it's just that VRM area seems to be the issue for me, the included fan to fit on the VRM cooler from what I can see of it is a bit of a gimmick.

I've put the board back to stock settings for the moment until I decide what I want to do with the cooling options. Running Prime95 the VCORE rises pretty rapid up to 60+ deg and will slowly climb up from there.

It could be that the VRM contact for the board heatsink is a bad contact point, and maybe worth me reseating it. Options... Options...
 
i had my 3930k at 4.6ghz on air, temps were around 65-70, using the frio advanced cooler that came with my msi motherboard, but it was way way way too noisy, mostly down to the fans on that cooler but even when i changed them to akasa vipers, which were massivly quieter than the previous fans, it was still much louder than i would have liked, ended up going watercooling.
 
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I've managed to get the chip running quite happily at 4.5/6/7 and running Prime seems ok for as long as I've dared let it run. for me the issue seems to be heat soak at the VCORE / VRM's.

Does anyone know what VCORE temps are the "limit"? My board complains like mad at me whne I get close to 80.
 
80c is way too scary for my liking this H100 gets 4.5Ghz mid 60's under torture testing and between high 20's & low thirties idle.

The performance to heat ratio nose dives at frequencies above this point regardless of what cooling system.

If you're happy with 4.5 or 4.6 you'd be fine under a very high performing aircooler.
 
Ghøst said:
If you're happy with 4.5 or 4.6 you'd be fine under a very high performing aircooler.
Click to expand...

OK nice one I might give a 3930K a try then, I suppose I'll just lock it at stock volts and see how high it goes. :)

I need to save up a bit more first though I'll report back in a week or two. ;)

What is the stock volts of these btw? I'm guessing anything up to 1.3V should be manageable on air.
 
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Also from what I read having a fan blowing directly at the x79 VRAM's is helpful for combating overall temps & possible resulting CPU choking regardless of CPU cooling method..
 
mmj_uk said:
OK nice one I might give a 3930K a try then, I suppose I'll just lock it at stock volts and see how high it goes. :)

I need to save up a bit more first though I'll report back in a week or two. ;)

What is the stock volts of these btw? I'm guessing anything up to 1.3V should be handleable on air.
Click to expand...

Auto VCORE was pulling 1.105 Volts at stock frequency whilst in the BIOS.


*Edit

1.305 Volts gets this chip 4.5Ghz, temps have increased by about 25% at 1.400 that should give you a rough indication of an average chip.
 
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mmj_uk said:
Wow that's really low, what does it go to under turbo? (3.8ghz?)
Click to expand...

3.2Ghz is stock & Turbo 2.0 Mode on this board is 4.0Ghz but I've never checked how many volts it pulls & there is also an eco mode but haven't tried that either.

The powerdraw scalling works very well idles about 46Watts and ups to 167 at 4.5Ghz when being tortured at 1.3Volts.
 
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Are all of the OCUK stock C2 stepping now? I don't want to go ordering and receive a C1 I'd have to DSR it and wait for a refund. :(
 
I picked one up and am delighted with it so far. :)

Straight in at 1.2V (seemed like a good low number) and 4.2ghz, the temps are peaking in the late 50's under full load in IBT which has surprised me, I was expecting to be struggling to keep it under 70 but I'm guessing it's only when you wack up the volts to 1.3V+ that temps get out of hand? my memory controller is only at 1.35V which might be helping. I might try 4.4 in a few days once things have settled in.

Overall I really like the X79 platform, next on the list a new top end graphics card. ;)
 
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