Haswell & Overclocking

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I recently built a computer based on the new Intel Haswell Architecture. If anyone remembers me asking whether I should choose the FX-8350, 3770k or wait for haswell, I decided to wait for haswell because I didn't have much time to dedicate into building and testing a new machine.

Recently, out of the blue, I ordered the components and built the PC:Processor:
Intel Core i7-4770k w/ H100i Liquid Cooling
Motherboard: GIGABYTE Z87X-UD3H
Memory: 2 x 8GB Corsair Veng. @ 1600Mhz CL10
Case: Corsair Carbide 300R (BARELY just enough space to fit the H100i)
HDD1: 256GB OCZ Vertex 4 SSD
HDD2: 1TB WDC Black

Was pretty much my first time building a new computer from stratch, and was pretty fun. (I did have experience refurbishing and putting together components when I worked as a computer service technician for a short while)

Everything is fine, and I've ran a couple Memtest86 tests to make sure my system memory is working as expected, and have ran AIDA64 stress tests, and Prime95 stress tests (monitoring HW sensors/temps and voltages via AIDA64).

Everything is fine and stable at stock settings, which is 3.5GHz (3.9GHz Turbo). That's when I decided to see if I had a decent overclockable chip, because I've read reviews of Haswell being a bad overclocker and having bad temps.

I just tried out some basic overclocks, to see if it would overclock, but seems like I'm having a horrible time finding my hotspot

Question: Does anyone have a Haswell chip, and have you tried overclocking?
What cooling do you have? I think my H100i is working fine (maybe a little bit hotter than expected, but never reaching over 70C on synthetic tests)

I've tried the following dirty overclock settings:
45*100 w/ 1.2 Vcore
46*100 w/ 1.25 Vcore
45*100 w/ 1.25 Vcore (seemed stable for amount 30 minutes before BSOD in Prime95)

I didn't have much time to overclock, so I want to ask around before trying again (I've reset CMOS and am running on stock speeds ATM). Prefer not to go past 1.3V, especially because haswell runs hot already. I did try 4.6 w/ 1.3V at one point, but I remember it did not boot.

I understand that this is a silicon lotery, and that not all chips will perform identically, but damn, these chips are really shitty overclockers

I've also tried disable C states, and IEST; No luck. Keeping Uncore/cache ratio slightly lower than the multiplier seems to help stabilize a little bit (my bios recommends a 1:1 or higher ratio though)

I may have gotten my chip for a shitty batch (Malaysia). Too bad I can't exchange, as my processor doesn't have any real defects
 
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I don't want to void my warranty just yet. I plan on delidding in the future, but temps are not a big problem for me currently, since I'm using a some-what decent all-in-one liquid cooler

I get a stable 5,1GHz after delidding with 1.35vcore, before delidding I couldn't even manage 4,6 because of the temps, even with my zalman reserator 3 the temps were at 80c, after delidding the temps are now about 35 idle and max 55 with IBT


But if you don't delid then 4,5 is about all you get before the chip melts unless you use liquid nitrogen to cool
 
I get a stable 5,1GHz after delidding with 1.35vcore, before delidding I couldn't even manage 4,6 because of the temps, even with my zalman reserator 3 the temps were at 80c, after delidding the temps are now about 35 idle and max 55 with IBT


But if you don't delid then 4,5 is about all you get before the chip melts unless you use liquid nitrogen to cool

That's not even remotely accurate, but points for trying.
 
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It's probably a joke ya know :rolleyes:

I agree with Slayhhh though. If you can delid, do it. A friend of mine has done it and his temps went down significantly.

Can you find out what kind of TIM he applied between the chip and the heat spreader?

I really don't want to risk it this early, but maybe later on when I really need the performance increase or I see temps being a problem.
 
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