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[Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET - Page 1034

post #10331 of 10701
topet2k, set your pll to 1.71v and your vccio to 1.1v if youre running 4 sticks or 16gb of ram. it WILL help.
if you havent read this yet, http://www.overclock.net/t/910467/the-ultimate-sandy-bridge-oc-guide-p67a-ud7-performance-review read it. it is an excellent guide for all gigabyte boards. sin is a god when it comes to gigabyte. he knows his poo.
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post #10332 of 10701
Quote:
Originally Posted by pc-illiterate View Post

topet2k, set your pll to 1.71v and your vccio to 1.1v if youre running 4 sticks or 16gb of ram. it WILL help.
if you havent read this yet, http://www.overclock.net/t/910467/the-ultimate-sandy-bridge-oc-guide-p67a-ud7-performance-review read it. it is an excellent guide for all gigabyte boards. sin is a god when it comes to gigabyte. he knows his poo.

 

Thanks, my friend!

 

As a matter of fact, that thread was the very first thing that I have read when I started my overclocking adventure. Indeed, Mr. sin0822 seems to be an expert in this field. I would love to PM him to ask for guidance, but I hesitated because it looks like he is already a high-profile forum member so he must be busy. But definitely I will try to send him a message.

 

I have actually achieved some success with overclocking and already submitted my official entries to this thread. I have tried the following:

 

4.0GHz, Manual Overclock Method, with LLC on Level 4<--this was my very first overclock, following sin0822's guide.

4.0GHz, Offset Overclock Method (not submitted)

4.3GHz, Offset Overclock Method (not submitted)

4.4GHz, Offset Overclock Method, +0.010 Offset VCore (1.308 VCore in BIOS...within OS it was 1.296->1.284->1.272->1.260)

4.5GHz, Offset Overclock Method, +0.035 Offset VCore (gave me 1.344 VCore in BIOS, and then within OS it was 1.320->1.308->1.296->1.284)

 

It's summer months so I will have to wait until the rainy season for the weather temperatures to go down a bit. :)

 

Maybe you can pitch in or give insights to some of my previous questions? But definitely I will also forward them to Mr. sin0822. Anyway, here are my previous posts (and only if you have time, please):

 

  1. http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/10230#post_19902970
  2. http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/10230#post_19903159
  3. http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/10240#post_19937857
  4. http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/10220#post_19902765
  5. http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/10240#post_19937857
  6. http://www.overclock.net/t/968053/official-the-sandy-stable-club-guides-voltages-temps-bios-templates-inc-spreadsheet/10300#post_19997893

 

EDIT: is this VCore considered "within range" or good enough, i.e. not too high for a 4.5GHz Overclock?

 

Today I am running another round of 12-hour Prime95 stress-test. It's the same 4.5GHz overclock, but I am now trying +0.025 Offset. In BIOS, that would be a VCore of 1.332 and then within the OS (during stress-testing) the VCore was 1.308<-1.296<-1.284<-1.272.

 

For RAM, here is my query: I only have two sticks, 4GB which is 2x2GB...Corsair Dominator  CMP4GX3M2A 1600C9. On the sticker, box, and the product's website it says 1600MHz at 1.65V. In the BIOS, it shows at 1333MHz at 1.5V though. Do I have to change BIOS for it to run at 1600MHz at 1.65V? Are those the "stated/rated timings"? Or do I just keep it at 1333MHz at 1.5V?

 

By the way I have tried out enabling "XMP Profile" for the RAM. I noticed that the RAM settings would be 1.65V and then Vtt Voltage (I'm guessing this is VCCIO) of 1.15. If I wanted to set my ram to 1600MHz manually instead of using XMP Profile...do I simply set VDIMM to 1.64 (that's the closest to 1.65V in my BIOS) and then I will set my QPT/Vtt to 1.08V (from the default of 1.05V)?

 

For my motherboard: to set PLL to a lower value as suggested (i.e. 1.71V), do I have to enabled "CPU PLL Overvoltage"? Or will 1.71V still kick in even if I don't enable it?

 

Or do I just forget about configuring the RAM altogether (apologies...I am simply bewildered because the sticker/box says 1600MHz but BIOS says 1333MHz so I don't know what the "rated/stated timings or settings" are).

 

Thanks in advance. :)


Edited by topet2k12001 - 5/22/13 at 11:07pm
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post #10333 of 10701
sandy b supports 1333 ram and anything higher is overclocked as far as intel cares(yes that means even 1600). set what the sticker says. the xmp profile is there to set the timings and voltages at what corsair 'knows' they operate at that speed.
its been stated almost everywhere, especially in this thread, that pll overvoltage is only needed when you cant boot into windows without it at higher multipliers, usually x48 and up.
some suggest setting vcore and llc so you only get a variance of .008v during load. i didnt have to worry about that because i wasnt stable until i just happened to hit that variance. for reference, i need 1.336v while idle(cpu-z) and drop to 1.320-1.328v while running prime. its kinda funny that i also only drop .008v from idle to highest load vcore which is just coincidence. thats high llc (50% on asus) which munaim1 recommends for asus boards.
good luck topet2k!
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post #10334 of 10701
@topet2k12001:

The PLL voltage and PLL overvoltage thing shouldn't be confused with each other, I am pretty sure one is external and one is internal. the former can reduce temps a little and sometimes allow you to lower your vcore a little bit, but most CPU's have a sweet spot for this value. The PLL overvoltage setting is the internal PLL voltage i believe, and can help stabilize high overclocks (usually 4.7 and above).

As for RAM, (almost) all motherboards initially boot up with standard JEDEC certified speed (1333MHz being the max official spec) so you must manually change it yourself if you want to get the most out of your RAM. The XMP profiles are there for ease of use so you don't have to manually set the speed, timings, and voltage yourself. You can, of course, still apply those settings manually though.

From skimming your other posts, I see you're trying to stabilize an offset overclock without LLC. Generally this is more difficult because there's more factors to consider. I don't really think there's a connection between increased temperatures and increased vdroop. As prime95 runs it cycles through different FFT's. Each one can stress the CPU differently, so I think the increased temperatures are just because of more load. If you really want to get prime stable, I would suggest finding the FFT's that put the highest load (highest current draw and highest vdroop) and find a high enough voltage that works on those without dipping too low. Generally FFT's 1344, 1792, and 2688 are the toughest ones for sandy/ivy to pass but that is with LLC so they may not be the highest power consuming ones. In my experience you always need more voltage to stabilize an offset voltage than a manual voltage, especially when non-LLC is involved because you need to find the highest vdroop point and make sure your CPU is getting the amount of load bearing voltage it requires during those worst-case scenarios. Also there is another factor to consider whereby the lower clock/voltage steps may not be receiving enough voltage with offset, but with non-LLC this shouldn't be a problem since it will generally be getting more non-load voltage. With LLC I was having this problem.

Everyone has different opinions on LLC voltage spikes, but I believe the better your board's PWM's are the less likely your CPU will experience dangerous overvoltage spikes. Most high end boards nowadays have good quality PWM's as long as you set the board to use all of them. I'm not sure about gigabyte but I know on Asus boards you can even adjust the frequency they run at (thereby presumably further decreasing any voltage dips or spikes, but I just leave mine on "Extreme" and "Ultra High" settings.).
Edited by s74r1 - 5/23/13 at 4:07am
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post #10335 of 10701
Quote:
Originally Posted by pc-illiterate View Post

sandy b supports 1333 ram and anything higher is overclocked as far as intel cares(yes that means even 1600). set what the sticker says. the xmp profile is there to set the timings and voltages at what corsair 'knows' they operate at that speed.
its been stated almost everywhere, especially in this thread, that pll overvoltage is only needed when you cant boot into windows without it at higher multipliers, usually x48 and up.
some suggest setting vcore and llc so you only get a variance of .008v during load. i didnt have to worry about that because i wasnt stable until i just happened to hit that variance. for reference, i need 1.336v while idle(cpu-z) and drop to 1.320-1.328v while running prime. its kinda funny that i also only drop .008v from idle to highest load vcore which is just coincidence. thats high llc (50% on asus) which munaim1 recommends for asus boards.
good luck topet2k!

PLL overvoltage should also be enabled when overclocking RAM.
post #10336 of 10701

Hi Friends,

 

Thanks for those who pitched in (pc-illiterate, s74r1, kevindd992002). :)

 

I appreciate the clarification on my query with regard to the RAM. It bewildered me to no end due to the 1333MHz (in BIOS) versus 1600MHz (what the sticker says). At least now it's clear. :)

 

Both pc-illiterate and s74r1 were able to summarize, in a few words than I did (lol...), what I was planning to do: have a "low-as-possible" VCore with small variance between lowest and highest (load) VCore, and without LLC (because with my Gigabyte P67A-UD7-B3 I am unable to use both Offset Voltages and LLC at the same time, unfortunately).

 

I am somehow envious of Asus motherboards because they allow usage of both features, but at the same time I do not want to part with my Gigabyte board...I just love it from a purely aesthetic standpoint, as well as the "ease of use" for setting Offset Voltages in overclocking (but maybe the reason it was easy is because of less variables involved, i.e. I can only use Offset or LLC separately).

 

One input from kevindd992002 says that I should enable PLL overvoltage when overclocking RAM. Is this consistent/same as what pc-illiterate and s74r1 saying? From their posts, my understanding is that when I set my RAM to 1600MHz (manual or XMP) it is not "yet" overclocking (?).

 

EDIT:

 

@pc-illiterate: thanks by the way for sending me a PM to offer help. :) I will definitely try and PM sin0822. I am an avid reader of his posts due to having the same Gigabyte motherboard. I am interested to know if I can "downgrade" my official BIOS (F7) to a customized BIOS version, because sin0822 made reference to a certain modded BIOS that enables the usage of LLC and Offset Voltages at the same time.

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post #10337 of 10701
I'm guessing you might have to get a new bios chip to vet a lower numbered bios. Some board manufacturers,*cough*Asus*cough do not allow you to go under a numbers series, ie 3202 to 2303. Have you tried having someone respectable mod your bios to a version that supports both? Might be worth looking into.
And no, taking your ram to 1600 is 'over clocking' it. Sandy officially supports up to 1333. Anything higher is over clocked.
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post #10338 of 10701
Quote:
Originally Posted by pc-illiterate View Post

I'm guessing you might have to get a new bios chip to vet a lower numbered bios. Some board manufacturers,*cough*Asus*cough do not allow you to go under a numbers series, ie 3202 to 2303. Have you tried having someone respectable mod your bios to a version that supports both? Might be worth looking into.
And no, taking your ram to 1600 is 'over clocking' it. Sandy officially supports up to 1333. Anything higher is over clocked.

 

I see. So basically, one would change the RAM to 1600MHz so as to maximize what one has purchased, i.e. "because I paid for 1600MHz, I need to have 1600MHz"...but as far as what the system requires, it can happily live off 1333MHz?

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post #10339 of 10701
Quote:
Originally Posted by topet2k12001 View Post

One input from kevindd992002 says that I should enable PLL overvoltage when overclocking RAM. Is this consistent/same as what pc-illiterate and s74r1 saying? From their posts, my understanding is that when I set my RAM to 1600MHz (manual or XMP) it is not "yet" overclocking (?).

You can ask people in the OCN RAM Addict Club about this. At least that was the answer to me of most people there when I was OCing my RAM.
post #10340 of 10701
I haven't had to enable PLL Overvoltage to overclock RAM, and I've been running 2133MHz on all 3 of my sandy's.

Edit: It does seem put more strain on the CPU if you're running tight timings and high VDIMM though. I've experienced some form of degradation (requiring more VCore over time) when running high VDIMM (1.65v) with 2133 CL9 RAM together with high VCore (>1.4v) even with just two DIMMs, but I can't quite pinpoint the cause. I've been fine with 4 DIMMS of CL11 2133 @ 1.55v and <1.4v VCore though.
Edited by s74r1 - 5/26/13 at 4:10am
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Intel Core i7 4790k 4.7GHz delid w/ CLU Asus Maximus VII Formula GeForce GTX 1080 FE w/ fullcover block 32GB (4x8GB) G.Skill TridentX 2400MHz CL10 
Hard DriveHard DriveCoolingOS
Samsung 950 Pro 512GB NVMe M.2 Sandisk X400 1TB mSATA SSD Custom Liquid Cooling Loop Windows 10 Pro 
MonitorKeyboardPowerCase
Acer Predator X34 34" IPS/G-Sync Curved UltraWi... Logitech G910 Orion Spark Mechanical RGB Gaming... EVGA SuperNOVA 1000 P2 w/ Noctua NF-P14s Redux Lian-Li Armorsuit PC-P50R w/ W-LM2AB-1 side pan... 
MouseMouse PadAudioOther
Logitech G900 Chaos Spectrum Logitech G240 Cloth Gaming Pad HDMI->Custom 7.1 Home Theater Sony Dualshock 4 Controller 
OtherOther
Intel I210T1 Ethernet Server Adapter Intel Wireless-AC/Bluetooth 7260 Network Adapter 
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  • [Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET
Overclock.net › Forums › Intel › Intel CPUs › [Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET