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post #91 of 560
Until now I'm stable at 4.128, 172x24, vcore 1.30, VTT 1.23. LinX 50 passes, Prime 95 Small FFTs 8 hours stable.
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post #92 of 560
Quote:
Originally Posted by Yoor View Post
Until now I'm stable at 4.128, 172x24, vcore 1.30, VTT 1.23. LinX 50 passes, Prime 95 Small FFTs 8 hours stable.
Nice work

Any screenies?
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post #93 of 560
Quote:
Originally Posted by Ghostleader View Post
Nice work

Any screenies?
Unfortunately not, forgot to do so. But I'll try to reduce vcore a notch once more. If I get stable, I will post screenies.
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post #94 of 560
I am going to follow this guide http://www.overclockers.com/3-step-g...core-i3-i5-i7/ once I get my rig up and running.

I am wondering what multiplier should I start out with? For locked CPUs, I can try the maximum multiplier, but for an unlocked CPU, I am not sure.
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post #95 of 560
Quote:
Originally Posted by Yoor View Post
Until now I'm stable at 4.128, 172x24, vcore 1.30, VTT 1.23. LinX 50 passes, Prime 95 Small FFTs 8 hours stable.
Nice one. What are your temps on that Megahalems (and what fan setup)?

I can't get 4.1 GHz no matter what I try.. Crashes after a few passes of LinX.
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post #96 of 560
MEHHHH I have to settle for 4.0 ghz at 1.33 vcore, 1.27 IMC/VTT and 1.9 PLL. A little disappointed in this chip. I miss my W3520 that did 4.2 ghz @ 1.28 vcore.
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post #97 of 560
Here´s some i7 875K bench comparision with Bclk 133 vs 200 at 4,0GHz for those who are interested.

Hyper Pi 32M and Super Pi 32M, Bclk 133


Hyper Pi 32M and Super Pi 32M, Bclk 200


x264 HD Benchmark 3.0, Bclk 133 and 200


Cinebench R10, Bclk 133 and 200


Cinebench R11.5, Bclk 133 and 200


Crysis, Bclk 133


Crysis, Bclk 200


Stalker Clear Sky, Bclk 133


Stalker Clear Sky, Bclk 200


Crysis Warhead, Bclk 133


Crysis Warhead, Bclk 200

Edited by Ghostleader - 6/21/10 at 5:19am
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post #98 of 560
Quote:
Originally Posted by Blizzie View Post
Nice one. What are your temps on that Megahalems (and what fan setup)?

I can't get 4.1 GHz no matter what I try.. Crashes after a few passes of LinX.
My temps are idle 42-45; load in LinX are 70-72, in Prime 95 are 60-64. My Megahalems is with a single Scythe S-Flex 1200 RPM fan.

I want to share a few observations from my i7 Lynnfield OCing experience so far. It is very important to find ultimate BCLK stability first, and that has much to do with a correct VTT voltage. But it all depends on the quality of the RAM memory your using, IMO. Some memory just seem to need high VTT voltages (beyond Intel specs) to run at advertised speeds. Mine are utter crap, I can't even get them to the advertised speeds (DDR3 1600 8-8-8-24-2T), so I have them at DDR3 1376 7-7-7-20-1T (172x8), because a BCLK of 172 is the maximum I can get stable with a low(-ish) VTT of 1.23. I'm afraid of pushing this voltage higher, as Intel says the absolute maximum for the Lynnfields is 1.21.

Once the BCLK stability is found, I just kept pushing the CPU multiplier with a vcore voltage I'm comfortable with (my "comfortable" level is 1.35 and below). My i7 875K is now with a vcore of 1.30 at 4.128 GHz. I guess I should be happy...or, should I squeeze more from this chip?
Edited by Yoor - 6/20/10 at 11:08pm
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Core i7 875K @ 4.128 GHz Gigabyte P55-UD4P XFX ATI Radeon HD5870 OCZ Gold DDR3 1600, 4GB (2x2GB) 
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My System
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Core i7 875K @ 4.128 GHz Gigabyte P55-UD4P XFX ATI Radeon HD5870 OCZ Gold DDR3 1600, 4GB (2x2GB) 
Hard DriveOSMonitorKeyboard
Western Digital Velociraptor Windows 7 Ultimate x64 Acer GD235HZ Logitech G13 
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post #99 of 560
Quote:
Ghostleader
Here´s some i7 870K bench comparision with Bclk 133 vs 200 at 4,0GHz for those who are interested.
You have a "875 K" Why are you referring to it as 870?
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Lo-Pan PC
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Living Room PC
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CPUMotherboardGraphicsRAM
Intel Core i5-6600K Skylake Evga Z170 Stinger  Evga GTX 960 FTW 4gb CORSAIR Vengeance LPX 16GB DDR4-3000 
Hard DriveHard DriveHard DriveHard Drive
256gb Kingston HyperX Savage SSD 240gb Sandisk Extreme SSD  60gb OCZ Vertex SSD 1tb WD Blue 7200RPM 
CoolingOSMonitorKeyboard
NZXT Kraken X61  Windows 10 64-Bit Dell UltraSharp U2412M Custom WASD mechanical 
PowerCaseMouseMouse Pad
Evga 750w SuperNOVA G2 NZXT Manta with RGB Lighting CM Storm Xornet Intel 
AudioOther
Realtek NZXT 
CPUMotherboardGraphicsRAM
AMD A8-3850 Llano APU  ASROCK A75M HVS XFX HD7750  2x4gb Gskill RipJaws DDR3-1333 
Hard DriveOptical DriveCoolingOS
500gig Hitatchi  HP Sata DVD/CD Burner Stock Windows 10 
MonitorKeyboardPowerCase
42" LG Smart LED TV 120hz Logitech PC Power and Cooling 370w PSU nMEDIAPC Red Wood HTPC 8000 
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post #100 of 560
Quote:
Originally Posted by ChrisB17 View Post
You have a "875 K" Why are you referring to it as 870?
lol, you´re right , haven´t really reflect about the 870, 875 name difference , brain-fag or what ,I don´t know why but thanks for pointing that out

Have a nice day
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The Blue Beast
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