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max 750 vCore

post #1 of 8
Thread Starter 
First of all, I did search, but I found very few direct answers to this question. Is there a max "safe" vCore for my i5 750? I see Intel spec is 1.4v, but I also see many people saying it partly depends on temps. Right now, I'm trying to get 4.2 relatively stable (but not necessarily 24/7), but it looks like it's gonna take a good bit of voltage. So far I'm at something like 1.385v in BIOS (w/o vDroop). CPU-Z idle is 1.388v, load is around 1.41v. Temps are around 65 max in Prime95, with LinX a good 5 or 10 higher. Looks like I'm getting close to stable, but not quite there yet. So how much headroom do you think I have on my vCore? Is there a good number as long as temps are in check? (I'm looking to stay below 80 w/ LinX). Finally, note that this will not be my 24/7 clock. I managed to obtain 4.0 with reasonable voltages, so I'll drop it back down after I find the absolute max. It's a shame this chip is so vCore hungry because Vtt stays super low. I was able to get 220 bclk @ 1.325v.

Again, my question is concerning maximum safe vCore. I don't care what voltage your chip reached 4.2 at. There are plenty of posts where I can get references for voltages.
Edited by champyg - 6/5/11 at 11:37am
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post #2 of 8
I was running my lovely i5 750 @ 3.6Ghz @ 1.21 volt.
After that I needed a big bump.
3.8 @ 1.315
4.0 @ 1.385

EDIT : Those was on MY chip.
Try to find out your sweet spot.

I'd say 4.0 @ 1.4 is high, try to lower it a little to 3.8-3.9
post #3 of 8
Thread Starter 

I'm trying to get 4.2 stable. I already have my 4.0 stable @ 3.5. You also didn't answer the main question I needed an answer for.
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post #4 of 8
So you say your trying to get 4.2GHz stable so you can bench at that speed???
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post #5 of 8
Thread Starter 
I guess I worded it strangely. I'm trying to get it relatively stable, but 24/7 stability is not a must. All I'm looking to do is pass an hour or 2 of p95 and 3-5 passes of LinX. Right now it's erroring out on the first LinX pass and less than an hour in P95, so I don't know if it's even worth it to try benching yet.
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post #6 of 8
Please don't take this as an insult (First)

Overclocking, and Benching are 2 different animals!
If your trying to get a certain clock stable (24/7) Your an overclocker.
If your a Benchmarker, you don't care about being (even close) to being stable!

As a Benchmarker, your main concern is to get that certain benchmark to run, without blue screens. Thats it! Stability shouldn't be an issue!

I can run a ton of benchmarks at 4.8GHz, but I'll never pretend to tell you it's stable at that speed!
Just run the benchmark! If the benchmark completes, then you've accomplished your goal!

Just my 2 cents!
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post #7 of 8
Thread Starter 
Yeah I realized that after going back and reading. I'm familiar with the two methods, I was just typing in a hurry. Post is edited now. VCore question still stands, but I've found a few sources citing Intel spec is 1.45v, and it looks like I'll be temp capped before then anyway, so no worries.
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i5 750 @ 4.0 24/7 EVGA P55 FTW Asus GTX 570 2 x 2GB G Skill 1600MHz 
Hard DriveCoolingCoolingCooling
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CoolingOSMonitorMonitor
Enzotech Sapphire Windows 7 Ultimate 64-bit 26" LG LCD wide 19" Rosewill LCD 
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Rosewill RK-9000 Blacks Seasonic X-750 Cooler Master HAF 932 Logitech MX 518 
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CPUMotherboardGraphicsRAM
i5 750 @ 4.0 24/7 EVGA P55 FTW Asus GTX 570 2 x 2GB G Skill 1600MHz 
Hard DriveCoolingCoolingCooling
1TB Samsung Spinpoint F3 MCP 655 MCR320 EK 580 nickel/acrylic 
CoolingOSMonitorMonitor
Enzotech Sapphire Windows 7 Ultimate 64-bit 26" LG LCD wide 19" Rosewill LCD 
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post #8 of 8
Ok, cool! Sorry I couldn't help you!
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Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
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W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
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Game Killer
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CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
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