Originally Posted by Majin SSJ Eric
So I got my 4930K installed today and will be shipping off my RMA 3960X tomorrow. Been playing around with the OC all evening and am somewhat disappointed. As it sits right now I can do 4.6GHz at 1.375V and 4.7GHz at 1.48V but 4.8GHz ain't happening. Instant BSOD at 1.5V and I don't really want to go beyond that. ANyway, I've been running a 5GHz 3960X for two years almost and the 4930K is definitely slower at 4.7GHz which is killing my bench scores (I lost 1k points on my 3dmark11 physics score). I'm running the IB-E 4403 BIOS on my RIVE already so that's not the problem and my temps are fine even at 1.48V (mid-60C's under full load) but the performance just isn't there at this clock speed. Looking like I may have to keep the new 3960X Intel sends me and return this 4930K to Amazon...
Bummer, that's disappointing to hear.
I think the delta is around 200 mhz, so you'd probably have to hit 4.8ghz to match your 3960 at 5.0 -- and we've already seen that almost nobody hits 4.8ghz on IB-e. That said, if I'm not mistaken, a SB-e that can do 5.0ghz on reasonable voltage is sort of a rarity, too, no? Why would you upgrade when you already hit the silicon lottery last time? Lightning rarely strikes twice in the same place.
It sounds like your 4960 is practically identical to my 4930. I'm currently cooling it with a H80i, but it gets pretty warm at 4.6, and too hot to even run at 4.7, so I'm probably going to build custom watercooling for it in a few weeks. Though it surely feels like a disappointment to you, I do believe we're in the top half of the curve -- you even more than me, as I'm pretty sure 4960X has been shown to clock even worse than 4930K.
When you get your 3960X, maybe you could run a few benchmarks with exactly the same setup and memory clock so we can compare apples to apples? Like Cinebench 3960X @4.7ghz vs 4960K @5.0ghz -- that's the sort of head to head comparison I've been seeking everywhere but have yet to find.Edited by chrisnyc75 - 10/10/13 at 6:48am