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Haswell Overclocking Guide [With Statistics] - Page 145

post #1441 of 19539
Thread Starter 

I'm not really big on checking stock VID... part of it could be based on the motherboard, and nothing figures out how well the CPU can overclock than trying to overclock it.

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post #1442 of 19539
anyone have any advice for me? I seem to be stable at 4.4ghz 1.3v, 42x uncore and 1.3625 cache voltage. to get 4.5ghz stable it seems to need a high 1.3 volts. is there anything else i can play with? everything else is default.
post #1443 of 19539
Quote:
Originally Posted by lolwatpear View Post

anyone have any advice for me? I seem to be stable at 4.4ghz 1.3v, 42x uncore and 1.3625 cache voltage. to get 4.5ghz stable it seems to need a high 1.3 volts. is there anything else i can play with? everything else is default.

That's a really high cache voltage - I think I'd back that down some. You can try increasing the VCCIOD and VCCSA and see if that helps you with 45. However, there's normally a point where the voltage starts to go up a lot for any multiplier increase, so you could just have hit that spot.
post #1444 of 19539
Drop the uncore also.. then try raising the multi. I think there's quite a few of us stuck with a x44 Multi for some weird reason. Seems like a popular option and while it's low (IMO) it does match what I was getting on my Ivy when it was running x46.
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post #1445 of 19539
Quote:
Originally Posted by Forceman View Post

That's a really high cache voltage - I think I'd back that down some. You can try increasing the VCCIOD and VCCSA and see if that helps you with 45. However, there's normally a point where the voltage starts to go up a lot for any multiplier increase, so you could just have hit that spot.

ok, thanks. ill actually test the multiplier and vcore voltage by itself then. i actually stabilized the uncore first based on what someone said.
Quote:
Originally Posted by error-id10t View Post

Drop the uncore also.. then try raising the multi. I think there's quite a few of us stuck with a x44 Multi for some weird reason. Seems like a popular option and while it's low (IMO) it does match what I was getting on my Ivy when it was running x46.

I see. I'm confused about the the relation between the uncore and cpu multiplier. someone said to keep raising the uncore multiplier and voltage until stable (i got 42x at 1.3625v) and then do the voltage/ cpu multi.
post #1446 of 19539
Thread Starter 
Quote:
Originally Posted by lolwatpear View Post



someone said to keep raising the uncore multiplier and voltage until stable (i got 42x at 1.3625v) and then do the voltage/ cpu multi.

That's absolutely and utterly wrong.

 

Refer to the original post of this thread:

 

1. Set Uncore (AKA Ring Bus) to core ratio to manual. Set it to stock multiplier manually. With ring bus running on stock and locked at stock for now, no need to fiddle with ring bus voltage. That goes to auto. Some motherboards MAY increase Vring to unsafe levels if you didn't manually set ring bus to stock because the motherboard will try to auto-overclock the ring bus if left on auto. Avoid future headaches by following step 1.
2. Set any XMP profile OFF for ram. If your ram is above 1600, set it to 1600, no higher while we're testing overclocks. Heck, if your ram is XMP'ed for 1600, lower it to non XMP. Doesn't hurt.
3. Start ramping up the core multiplier and voltage until you think you've found your sweet spot. Do stress test and if you pass, go to step 4.
NOTE: Yes, you up the core multiplier by 1 each time. You can probably get away with starting at 4ghz though. Because the core clock is 100, 100 x 40 = 4000mhz or 4ghz.
4. Now we fiddle with ram, higher ring bus/ring bus voltage in effort to get marginally better performance. Stress test. Do not raise ring bus or ram if it means lowering core clock for stability.
5. If you are hardcore or have a lot of time on your hands, you can try adding clockstrap to the mix but I'd stay away from it unless you're super duper picky. Nobody has reported very good results with this but you're welcome to experiment.
6. Set it to adaptive mode instead of manual now. Do not stress with adaptive.
 
==
And please just read the guide, it has info on what voltages are safe.

Edited by Darkwizzie - 8/30/13 at 7:39pm
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post #1447 of 19539
Quote:
Originally Posted by lolwatpear View Post

ok, thanks. ill actually test the multiplier and vcore voltage by itself then. i actually stabilized the uncore first based on what someone said.
I see. I'm confused about the the relation between the uncore and cpu multiplier. someone said to keep raising the uncore multiplier and voltage until stable (i got 42x at 1.3625v) and then do the voltage/ cpu multi.

oh god. good thing you came here, or you never would've gotten a stable overclock and may have even fried your cpu. 1.3625v on the uncore is scary high.
post #1448 of 19539
So I have finally been able to play around overclocking and have gotten stable at 4.5ghz 1.26 vcore and 1.9 vccin. Temps are not an issue and I am really just wondering in terms of the amount of volts it takes for this OC whether or not this chip is decent or if I should return it and take another stab at a good chip. Ideally I am going to run daily around 4.5 but want stable max OC for benching. Hesitant to return just because I have seen some real dogs out there with people claiming they cant get a stable 4.4 OC no matter the volts. Thoughts/advice? Thanks in advance.

edit: My thought about the vcore being high for the OC is based on that 3 step haswell OC guide where they say you should be able to boot at 4.6 with 1.2 vcore. Tried, no luck. http://www.overclockers.com/3step-guide-to-overclock-intel-haswell
Edited by Clockwerk - 8/30/13 at 7:55pm
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post #1449 of 19539
Thread Starter 
Quote:
Originally Posted by Clockwerk View Post

So I have finally been able to play around overclocking and have gotten stable at 4.5ghz 1.26 vcore and 1.9 vccin. Temps are not an issue and I am really just wondering in terms of the amount of volts it takes for this OC whether or not this chip is decent or if I should return it and take another stab at a good chip. Ideally I am going to run daily around 4.5 but want stable max OC for benching. Hesitant to return just because I have seen some real dogs out there with people claiming they cant get a stable 4.4 OC no matter the volts. Thoughts/advice? Thanks in advance.

I think you're fine. Even at 4.5ghz you've got a decent overclock. You're not guarenteed anything if you return your CPU, you could get a worse one. Plus, think of the poor dudes with the duds, let them get the return!

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post #1450 of 19539
I wouldn't bother returning it. You basically landed smack dab in the middle- you didn't lose OR win the silicon lottery. If you're really just looking for 4.5 stable, that isn't too bad. It's your call to try again for a better chip, though.

One thing to remember though, is that Haswell's batch numbers are super wacky. Back in the pre-1155 days cpu batches were actually very accurate with determining a cpu's quality. With the release of sandy bridge, it became less relevant, and even more less relevant with ivy bridge, and now it's inaccurate to say the least. so you really are playing the lottery again.
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