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Got my CPU from a local retailer in Germany today. Its a 4770k batch L308B202.
I followed the JJ/ASUS suggestion and set a multiplier of x46 and manual voltage of 1.200v.
The system will post and boot into Windows 8. It will however BSOD in AIDA64's stability test as well as FFMPEG video encoding after like 30 seconds.
Is this still considered a great CPU since it boots into Windows at x46/1.2 or is it supposed to be all stable?
I wouldn't trust Aida64 for stability testing Haswell. Motherboard manufacturers are pimping it because it makes them look better than they are. I ran a 4.8GHz overclock that was "stable" for a couple of hours. Then I fired up Handbrake and the machine crashed instantly. Without Aida64 running I tried launching some other benchmarks and running them only to find out that my "stable" overclock was anything but stable.
Kyle has the same result here.
if it boots into windows its considered a better than average chip.
How well it does is another matter.
I could run super pi at 4,9ghz but not stable, testing 4.8ghz atm at 1.321v
Realistic maybe, but Aida64 ran for 12 hours on my chip at 4.4 Ghz and 1.295 volts with full stability and no throttling, and folding@home SMP client crashed within 8 hours.
Prime95 is still a good bet for full stability.
I have a sub-par 4770K. It needs 1.33 volts for 4.4Ghz stability and even with a de-lid/CLU application and use of a decent Antec 920 I'm getting full load temps near 87 Celsius on P95 with large workloads.
Chip is a joke. My de-lidded 3770K is running 4.9Ghz at 1.38 volts on a crappy Kuhler 620 at mid 70s with the same coollaboratories Ultra application.
Big step back for Intel IMHO.
I'm also thinking that they sent a bunch of golden samples to reviewers who are getting these easy 4.5+ Ghz overclocks.
Nah, lot of us are hitting 4.5ghz+. Heat is getting me.. I am getting 4.5ghz @ 1.255V. After the delid I will probably hit 4.6 or 4.7. It is still luck of the draw but I don't doub't they sent the reviewers a cherry picked sample... wouldn't you? lol
if it boots into windows its considered a better than average chip.
How well it does is another matter.
I could run super pi at 4,9ghz but not stable, testing 4.8ghz atm at 1.321v
My de-lidded 3770K does 4.6Ghz at 155 watts on a Maximus V Gene on the same Windows install on a measly 1.25 volts VCore, AND no core goes above 65 celsius.
So consider yourself a lucky person
Thanks, i'm still testing various settings. Like said above, 4.6Ghz at 1.200v will boot into Windows 8 but BSOD under full load (AIDA64, FFmpeg, Cinebench 11.5), leave alone Prime. Since i'm on a H80i i'm kinda limited with the temperatures so I decided to not go further than 1.200v. 4.5Ghz wasn't stable at 1.175v, i'm down to 4.4Ghz now which was my initial clock speed goal. So far its alright and seems Prime stable at 1.170. I switched to Adaptive mode (+47) to get 1.170 under load and its at 1.065 when idleing.
Edit: I got a few more questions
Settings I changed related to OC, correct me if I did something wrong please:
Ai Overclock Tuner to X.M.P
Core Ratio Limit to 44 (Sync All Cores)
PLL Overvoltage: Disabled (Didn't want this and remembered it cause problems with Sleep modes before)
CPU Core Voltage: Adaptive Mode
Offset Mode Sign: +
CPU Core Voltage Offset: 47 (to get 1.170v under load which was stable when set as manual voltage)
C States: Enabled
Can I leave the Min/Max CPU Cache Ratio at AUTO or is it recommended to set it to 44 as well?
Should I leave CPU Power Phase Control at AUTO or set it to Optimized for my 4.4Ghz/1.170v OC?
Basically I OC'd the same way I did on Sandy and Ivy before, just Adaptive instead of Offset this time.
Stock settings OC 1 OC 2
Auto Core/Auto Cache(x39) OC Core(x44)/Auto Cache(x39) OC Core(x44)/OC Cache(x44)
Cinebench 8.60 9.66 9.69
FFXIV ARR Benchmark 14040 14806 14912
Passmark CPU 11118 12380 12395
7-zip 24683 27494 27534
3DMark11 Physics 10279 11142 11089
True, but you're leaving performance on the table in my opinion. I don't calculate prime numbers with my computer, so I'm willing to accept high P95 load voltage and temps. I haven't come close to those voltages/temps in games for instance.
I'm surprised 1.285V is in thermal throttling territory. Is that common on the new chips?
I'm getting one with an H110.
I currently have the Intel Core i7 965 Extreme Edition, is it worth upgrading the mobo and switching to Haswell?
Does a 4770k generally oc better than the 4670k? After delid and HT off of course.
Some chips do overclock good for the 4770k's I would suggest trying to get 5.0ghz on lower than a 1.35v before delidding. Otherwise you might get stuck with a bad chip.
I was looking forward to haswell and then it's a big flop on the OC and temps. Was hoping for some more oomph but this isn't cutting it.
I picked up a giga Z87C-UD4H board, and consider swithcing to a 4670K or more like 4770K from my 8320.
My current cpu runs easily on 4,5ghz, so is it worth to change? I heard that most of the haswells are running very hot.
I'm mostly gaming on this rig, and i will probably change my GPU for the new 9970.
You might see a tiny bump in a handful of games depending on your gaming resolution and quality settings.
http://www.techspot.com/review/689-company-of-heroes-2-performance/page4.html
http://www.techspot.com/review/642-crysis-3-performance/page6.html
Note these tests are at medium quality settings, so more cpu usage than higher quality which you are likely to use.
The bottom line is don't waste your money unless you strike a game that maxes one or more of your cores in Task Manger which is the basic ballpark way to check.
Yesterday I decided trying to overclock with OCCT with Linpack, AVX, all cores enabled.