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Kougar
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How many have had terrible Haswell K chips?

Wed Nov 20, 2013 8:30 pm

Just posing a random question to see how many Gerbils have personally experienced useless 4770K chips?

It's sort of ironic. Knowing how good "Core" was going to be, I bought one of the launch day E6300's. Those turned out to be very leaky chips, but leaky chips also make for great OCers and I took that 1.86 Ghz chip to a 24/7 stable 3.8Ghz under water. I figured why not repeat that, so I bought a launch day 4770K... Not sure about leakiness and it took a great deal of testing, but I figured out "the wall" was 4.3Ghz, so I left it at 4.2Ghz. A month later, the chip had degraded to the point it no longer was stable at anything above 4Ghz! I now regret not buying a vanilla 4770 given this is basically a 4770 with features I could use disabled, but such is hindsight.

Any similar tales with Haswell K chips out there?
 
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Re: How many have had terrible Haswell K chips?

Wed Nov 20, 2013 9:14 pm

TR's reviews have said that both Ivy Bridge and Haswell were poor overclockers; the last good OCers from Intel were Sandies like my 2500K.
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Re: How many have had terrible Haswell K chips?

Wed Nov 20, 2013 11:30 pm

Mine runa just fine at 4.7GHz and while moar hutrz is always good, I can't complain about the performance, stability or even temps. Even 8 core real-world heavy workloads barely get the temps up to 60C)
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Re: How many have had terrible Haswell K chips?

Wed Nov 20, 2013 11:55 pm

22nm process need a ton of volts to keep themselves stable at high clock speeds. The said volts turn the silicon into a blast furnace which is made worse by the thermal paste that is used to bind the heatspreader instead of the older thermal epoxy found in previous generation of LGA chips.

In short, overclockers got spoiled by how well 32nm scaled with overclocking and 22nm doesn't yield anywhere near the returns. I'm not holding my breath for 14nm process, but we will have to wait and see.
Last edited by Krogoth on Thu Nov 21, 2013 12:20 am, edited 1 time in total.
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Re: How many have had terrible Haswell K chips?

Wed Nov 20, 2013 11:59 pm

Where did those 6 extra nm come from Krogoth? :P
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 12:00 am

MadManOriginal wrote:
Where did those 6 extra nm come from Krogoth? :P


Don't pick on old guys, we know what he means 8).
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 12:12 am

That's why you replace the thermal paste or something ... maybe a polish or is it a hot wax and buff job.

The first time I overclocked it involved replacing multiple chips on an IBM motherboard that had an 8088 processor.
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 1:39 am

I do recall reading TR's Haswell review that they got very poor overclocking results. As bthylafh said, the last "good" overclocking chips was the Sandy Bridge.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 4:28 am

bthylafh wrote:
TR's reviews have said that both Ivy Bridge and Haswell were poor overclockers; the last good OCers from Intel were Sandies like my 2500K.


Yep, you don't see many people getting all that much out of their 4770's yet people like up have 2500/2600k's jacked up in the 4.5/6/8 range.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 5:02 am

keltor wrote:
That's why you replace the thermal paste or something ... maybe a polish or is it a hot wax and buff job.

The first time I overclocked it involved replacing multiple chips on an IBM motherboard that had an 8088 processor.


Delidders still run into the same problems. A direct contact solution does help allievate the thermal paste issue, but Ivy Bridge and Haswell do get very toasty when you feed it the volts needed for high clockspeeds. It is hard to keep it cool with air when you go beyond 4.5Ghz. Water and Vapor-chilling are the only viable cooling solutions at 5.0Ghz and beyond.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 10:08 am

Fry's had sealed from-Corsair refurbished H80is for $45 the other day, which was too good to pass up. Wonder how that'd fair, given that it dispatches the heat from my 4.5GHz 2500k with ease at it's lowest setting.
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 10:12 am

Airmantharp wrote:
Fry's had sealed from-Corsair refurbished H80is for $45 the other day, which was too good to pass up. Wonder how that'd fair, given that it dispatches the heat from my 4.5GHz 2500k with ease at it's lowest setting.



I currently have a H80i for my 920 and it rocks. On my new build I'm going to get the H100i.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 11:01 am

Philldoe wrote:
Yep, you don't see many people getting all that much out of their 4770's yet people like up have 2500/2600k's jacked up in the 4.5/6/8 range.

I'd take a 4770K at 4.2 GHz over a 4.6 GHz 2600K any day.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 11:15 am

My 4.3GHz 4770k (undervolted to 1.2V) seems to be fine so fine *crosses fingers*
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 11:20 am

The 4770K in my test rig does 4.4 GHz at 1.2 volts, btw. The rest of the 4770Ks (5 of them) do about the same in other reviewers rigs.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 11:27 am

Kougar wrote:
Just posing a random question to see how many Gerbils have personally experienced useless 4770K chips?

It's sort of ironic. Knowing how good "Core" was going to be, I bought one of the launch day E6300's. Those turned out to be very leaky chips, but leaky chips also make for great OCers and I took that 1.86 Ghz chip to a 24/7 stable 3.8Ghz under water. I figured why not repeat that, so I bought a launch day 4770K... Not sure about leakiness and it took a great deal of testing, but I figured out "the wall" was 4.3Ghz, so I left it at 4.2Ghz. A month later, the chip had degraded to the point it no longer was stable at anything above 4Ghz! I now regret not buying a vanilla 4770 given this is basically a 4770 with features I could use disabled, but such is hindsight.

Any similar tales with Haswell K chips out there?


here is the thing. be it my opinion overvolting haswell is a mixed bag. and possibly detrimental.

it was engineered to fight arm and not overclock, this is NOT a surprise as tr and every other site noted. the IPC and draw (amp) trimming resulted in a chip that will normally not hit 4.5+ due to it being designed to be better..

the bad part. overvolting SB or older cpus was fine.. it was designed to ramp. and designed to handle higher draw(amp)/voltages. with overvolting you are actually putting more "wear" on the silicon. (thermal magnetizing, electron scaring, excessive gate wearing at increased load.. and more) i think we will see "badly" tuned cpus fail after a few years of abuse instead of 5-6+ years for badly tuned (overclocked) setups from the socket 1156/1155 days.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 2:19 pm

chuckula wrote:
Mine runs just fine at 4.7GHz and while moar hutrz is always good, I can't complain about the performance, stability or even temps. Even 8 core real-world heavy workloads barely get the temps up to 60C)

Didn't you also uncap yours? Not a fair comparison IMO.

Airmantharp wrote:
Fry's had sealed from-Corsair refurbished H80is for $45 the other day, which was too good to pass up.

Not as good a deal as the Cooler Master Seidon 120M I got (new) from Newegg for $25 after MIR a month or two ago.
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 2:46 pm

bthylafh wrote:
TR's reviews have said that both Ivy Bridge and Haswell were poor overclockers; the last good OCers from Intel were Sandies like my 2500K.

My 3570K runs just fine at 44/45/46/47 turbo mults. IVB instead of Hassie, but still.

I think the OP's "degradation" has more to do with motherboard, power supply, or some other factor than the CPU.

But then, I've always said problems with Intel 22nm overclocking were PEBKAC.
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 5:27 pm

22nm parts aren't that great at overclocking. There's a reason why the overclocker arenas are going the extra mile to get a Sandy Bridge chip over Haswell/Ivy Bridge if possible. 22nm and 3D transistor tech wasn't build for handling volts and scaling stupidly high. It was build to make the silicon to cheaper to make and reduce the voltage at lower clockspeeds. This make sense perfect business sense for Intel.

The crazy overclocks with 22nm parts are using LN2 and a stupid amount of volts to keep the chips stable far more than their 32nm predecessors. The whole thermal paste issue adds another variable to the whole thing. This annoys overclockers who aren't as adventurous and aren't willing to delid the heatspreader. Delidding just gives you more thermal headroom to deal with the overvolting.
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Kougar
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 6:56 pm

I guess I could've phrased myself better. To be clear, I never did "expect" good OCing from Haswell as I knew about the thermal goop and Ivy. I figured I had decent odds of 4.4Ghz and I would've been very happy to get that out of my chip. I use a triple 140mm radiator so cooling the hotheaded chip was not a big deal either, I kept coretemps to 75c or less during regular use.

What I did NOT expect, was that the chip would require 1.26v to hit 4.2Ghz. That I could at least live with. What I can't live with is that it now requires 1.20v to remain stable at 4Ghz, basically a little over its max turbo freq!

ChronoReverse wrote:
My 4.3GHz 4770k (undervolted to 1.2V) seems to be fine so fine *crosses fingers*


Keep 'em crossed. My 4770K requires 1.20vCore just to remain stable at 4Ghz. 1.18v will crash within minutes. By comparison this chip used to be stable at stock voltage @ 4ghz, but has degraded considerably.
 
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Re: How many have had terrible Haswell K chips?

Thu Nov 21, 2013 7:45 pm

OK, I rebooted my machine just to help y'all out and here are the pertinent settings:

1. CPU Core Voltage offset +0.150 volts. That puts maximum theoretical voltage at just shy of 1.3V given the base. That's nothing to be terrified of.
2. CPU Cache Voltage offset: +0.150 volts. Don't forget the cache! Separate voltage plane.
3. System Agent Voltage offset: +0.1 volts. This was critical to maintaining stability even when the CPU wasn't necessarily maxed out doing computations. During the system stabilization process I had more lockups when the CPU cores were under 60C doing compile jobs than I had when I was torture-testing the cores with AVX2-enabled Linpack.

Note: I'm doing all of this with full 32GB of RAM that is clocked at 2133 and 1.5 volts, that probably hurts my overclocking potential to some degree.

None of these settings are particularly aggressive, but Haswell is a more complex beast than previous chips. It took testing and awareness of what to be worried about and what not to be worried about before I arrived at my current configuration. Frankly, I've had a *bunch* more issues with one of my Samsung SSDs that I just RMA'd than I've had with my CPU.
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Re: How many have had terrible Haswell K chips?

Fri Nov 22, 2013 1:42 am

@maxxcool - WTF are "thermal magnetizing" and "electron scaring"? Never heard of either of those effects.
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Re: How many have had terrible Haswell K chips?

Fri Nov 22, 2013 8:49 am

I haven't modified the voltage on my 4770K, and it's in a Define R4 with 3 intake fans... gets anywhere from 68 to 72 C while folding 24/7. I've gotten higher temps with different workloads, so I feel like I can't push it much farther.
 
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Re: How many have had terrible Haswell K chips?

Fri Nov 22, 2013 10:37 am

Krogoth wrote:
22nm process need a ton of volts to keep themselves stable at high clock speeds. The said volts turn the silicon into a blast furnace which is made worse by the thermal paste that is used to bind the heatspreader instead of the older thermal epoxy found in previous generation of LGA chips.

In short, overclockers got spoiled by how well 32nm scaled with overclocking and 22nm doesn't yield anywhere near the returns. I'm not holding my breath for 14nm process, but we will have to wait and see.


My guess for clockspeeds is around the same we have now just less power use at stock speeds. As for unlocked chips I would have to think it is going to stay around the same as haswell possibly/probably get worse not better. "hope I am wrong"

I would think the biggest performance enhancer is going to be ddr4 and memory bandwidth intensive tasks where we will see the most improvement.

I doubt they will, but i truly hope they do not ditch the LGA setup and start soldering the chips to motherboards....that would stink unless they are dramatically improved from what we have now with less of a lottery when it comes to Overclocking.

Also If I had the choice of a 4.2ghz 4770k and my fine 2600k chip I will keep my 4705mhz 2600k since it overclocks so good and will run at 5.1ghz with a better cooler. I am currently using a 3 year old not very good 120mm AIO cooler and my temps average between 60-70c with the chip being overclocked for 3 years now. With this chip degradation I am hearing about with the Haswell chips, it makes me wonder what they are going to be like in a year or 2. That kinda freaks me out and makes me wonder if it has something to do with the tiny power regulation hardware under Haswell's hood since I have not heard anything about chip degradation on 22nm IVY chips that have been around for a while.
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Re: How many have had terrible Haswell K chips?

Tue Nov 26, 2013 7:17 pm

chuckula wrote:
OK, I rebooted my machine just to help y'all out and here are the pertinent settings:

1. CPU Core Voltage offset +0.150 volts. That puts maximum theoretical voltage at just shy of 1.3V given the base. That's nothing to be terrified of.
2. CPU Cache Voltage offset: +0.150 volts. Don't forget the cache! Separate voltage plane.
3. System Agent Voltage offset: +0.1 volts. This was critical to maintaining stability even when the CPU wasn't necessarily maxed out doing computations. During the system stabilization process I had more lockups when the CPU cores were under 60C doing compile jobs than I had when I was torture-testing the cores with AVX2-enabled Linpack.

Note: I'm doing all of this with full 32GB of RAM that is clocked at 2133 and 1.5 volts, that probably hurts my overclocking potential to some degree.

None of these settings are particularly aggressive, but Haswell is a more complex beast than previous chips. It took testing and awareness of what to be worried about and what not to be worried about before I arrived at my current configuration. Frankly, I've had a *bunch* more issues with one of my Samsung SSDs that I just RMA'd than I've had with my CPU.


I've never gone anywhere near that high on the system agent voltage, so just for kicks I tried it. It didn't change anything, the CPU will still BSoD under Prime95 at 4.2Ghz 1.26vcore, 1.24v Ring, and using that +0.1 SysAgent offset voltage.

The CPU can't even run a stable 4Ghz at stock voltages, that should impress upon you how much it has degraded and I never even used voltages as high as you've listed.
 
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Re: How many have had terrible Haswell K chips?

Tue Nov 26, 2013 7:34 pm

Waco wrote:
Philldoe wrote:
Yep, you don't see many people getting all that much out of their 4770's yet people like up have 2500/2600k's jacked up in the 4.5/6/8 range.

I'd take a 4770K at 4.2 GHz over a 4.6 GHz 2600K any day.


http://techreport.com/forums/viewtopic.php?f=2&t=90747

I wouldn't.
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Re: How many have had terrible Haswell K chips?

Tue Nov 26, 2013 7:54 pm

keltor wrote:
That's why you replace the thermal paste or something ... maybe a polish or is it a hot wax and buff job.


Didn't Chuckula or someone else do a test with delidding a Haswell and replacing the TIM with paste? Seems like I recall it made some difference but still didn't allow the sort of overclocking that people were experiencing with Sandy Bridge.
 
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Re: How many have had terrible Haswell K chips?

Tue Nov 26, 2013 7:59 pm

I'm down to 1.175V now, still at 4.3GHz. Slowly working it down and going for long-term stability (besides merely passing IBT and Prime95AVX).
 
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Re: How many have had terrible Haswell K chips?

Tue Nov 26, 2013 8:06 pm

Philldoe wrote:
Waco wrote:
Philldoe wrote:
Yep, you don't see many people getting all that much out of their 4770's yet people like up have 2500/2600k's jacked up in the 4.5/6/8 range.

I'd take a 4770K at 4.2 GHz over a 4.6 GHz 2600K any day.


http://techreport.com/forums/viewtopic.php?f=2&t=90747

I wouldn't.


I can think of one application where Haswell is a big win over Sandy or Ivy bridge even without recompiling... Dolphin, the Gamecube emulator. For some odd reason it got a roughly 18% speedup at the same clockspeed overall(The range varied from 12% to 22%, I believe, but averaged out at 18%).
 
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Re: How many have had terrible Haswell K chips?

Tue Nov 26, 2013 8:07 pm

nanoflower wrote:
keltor wrote:
That's why you replace the thermal paste or something ... maybe a polish or is it a hot wax and buff job.


Didn't Chuckula or someone else do a test with delidding a Haswell and replacing the TIM with paste? Seems like I recall it made some difference but still didn't allow the sort of overclocking that people were experiencing with Sandy Bridge.



Yeah, it won't automatically get you to 5GHz or anything. In my configuration I can run torture-test programs (like mprime, Intel's version of Linpack, etc.) and get the chip up to ~90C. It remains stable but it is HOT. In any other real-world scenario, including multi-core compiling, video transcoding, and other heavy-duty tasks, I can barely hit 60C. Games don't even come close to raising the temperature by an appreciable amount. From what I've seen, perfectly parallelized AVX2 loads that keep the data in the cache are the way to get these chips up to the really high temperatures. Everything else just warms them up a bit.
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