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post #91 of 111
With some more reading I found out your VTT just has to be within .5V of your vDimm, so you're probably fine, although I do think your VTT will eventually damage your CPU.
post #92 of 111
Interesting,
the ~1.74 VIN1 Voltage in HWmonitor, is that supposed to be reflecting VTT?

If so, it's set as 1.55v in BIOS, the same as the core voltage, and in BIOS that voltage shows as stable.
I wonder why the software is claiming 1.7+, and which one is correct...
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post #93 of 111
Quote:
Originally Posted by ph0 View Post
Thanks for that, I hadn't thought to whip out the multimeter and will certainly be doing so
In any case, I have another system under far less stress that could stand to inherit that PSU, so i'll likely still be buying the Antec.

As for the ram voltage, honestly, it's 2.0v standard.
From kingston.com:
KHX2000C9D3K2/2GN 2GB 2000MHz DDR3 Non-ECC
CL9 (Kit of 2) NVIDIA SLI 9-9-9-27 2.0V

I have 2x of those kits, so I'm sure voltage is correct, but I will admit they're far below clock and could probably run at a reduced voltage, perhaps helping case temps a lil. Maybe they won't like the voltage reduction while they're forced to 5-5-5 (etc). Food for thought anyway.

Good luck with your overclock
Nolonger wasn't saying it wasn't safe for your RAM. Intel recommends not going above 1.65v RAM voltage because higher voltages can damage the processor. I think it still applies to Clarkdale since it's based on Nehalem, but I can't really say that for sure. I haven't heard much new stuff about it since the 2008 i7 release. Here are some news articles about it before the i7 release:

http://www.tomshardware.com/news/int...tage,6464.html
http://news.softpedia.com/news/A-CPU...ry-95055.shtml
http://techreport.com/discussions.x/15658


Quote:
Originally Posted by nolonger View Post
With some more reading I found out your VTT just has to be within .5V of your vDimm, so you're probably fine, although I do think your VTT will eventually damage your CPU.
I've never heard about that. Do you have a source on that. Are you referring to this:

http://www.vistax64.com/general-disc...imit-true.html
Edited by Ben the OCer - 4/18/10 at 10:09pm
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post #94 of 111
How do I join? Currently I have an i5 650 @3.2 and I'm planning on overclocking to 4.0/4.5 this summer when i get my new watercooling set up going. Mobo wise i'm running the Asus P7P55D-E Pro.

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post #95 of 111
Quote:
Originally Posted by Ben the OCer View Post
Nolonger wasn't saying it wasn't safe for your RAM. Intel recommends not going above 1.65v RAM voltage because higher voltages can damage the processor. I think it still applies to Clarkdale since it's based on Nehalem, but I can't really say that for sure. I haven't heard much new stuff about it since the 2008 i7 release. Here are some news articles about it before the i7 release:
Ah!
Well in that case thank you both for pointing that out, I was completely unaware of it. I have dropped vDIMM to 1.65v and restarted testing; as long as stability is unaffected it shall stay this low.

Incidentally, Orthos continued to 27 hours without a hitch, but I won't bother posting it until after this reduced vDIMM run.
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post #96 of 111
Quote:
Originally Posted by ph0 View Post
Ah!
Well in that case thank you both for pointing that out, I was completely unaware of it. I have dropped vDIMM to 1.65v and restarted testing; as long as stability is unaffected it shall stay this low.

Incidentally, Orthos continued to 27 hours without a hitch, but I won't bother posting it until after this reduced vDIMM run.
No problem, I'm happy to help. Another little piece of advice. Since these chips are made on the new 32nm process they are very susceptible to high Vcore. Intel recommends a max of 1.4v for the CPU Vcore. Tom's Hardware fried a G6950 at 1.475v: link. Short suicide runs might be safe at higher voltages but I wouldn't do any stress testing. I've personally done a max of 1.4375v myself for a 4.7GHz suicide run. I don't feel like frying my chip.

It's nice to have another G6950 owner on here. They are nice little chips. I'm currently rocking at 4GHz 1.25v 24/7. I did have it stable at 4GHz 1.225v but have been getting some BSODs at that voltage. I'll have to do some more extensive stability testing. My max stable clock is 4515MHz 1.4v. I'd love to see a screen shot of that near 4.9GHz suicide run. Like I said earlier, the max I've been able to do is 4.7GHz 1.4375v for a suicide run.

By the way, I'd enter in your system specs: link. Instead of using the link you can also do it manually by clicking "User CP" at the top of any page and click "Add System" on the left had side.
Edited by Ben the OCer - 4/18/10 at 10:56pm
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post #97 of 111
I want to pick one of these core i3's up for my next build, but could any of you guys answer this question as I have heard very conflicting stories....

Do the clarkdale cpus support Crossfire/SLI?

Ie will they split the X16 lane into X8 X8 on compatible P55 motherboards, as this is what I hear conflicting results about.........
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post #98 of 111
Quote:
Originally Posted by Satans_Hell View Post
I want to pick one of these core i3's up for my next build, but could any of you guys answer this question as I have heard very conflicting stories....

Do the clarkdale cpus support Crossfire/SLI?

Ie will they split the X16 lane into X8 X8 on compatible P55 motherboards, as this is what I hear conflicting results about.........
P55 has only one x16 lane. That means if you SLI/Crossfire it'll only be able to be 8x/8x or 8x/4x/4x. If you get a motherboard with NF200 chip, you get more PCIe lanes.
post #99 of 111
Quote:
Originally Posted by nolonger View Post
P55 has only one x16 lane. That means if you SLI/Crossfire it'll only be able to be 8x/8x or 8x/4x/4x. If you get a motherboard with NF200 chip, you get more PCIe lanes.
I dont think you got what I was asking, can the core i5 and 13 clarkdale cpus split the onboard X16 lane into X8 X8 for Crossfire/SLI?

I know the core i5 750 can, but I hear conflicting stories about the clarkdales........
Edited by Satans_Hell - 4/19/10 at 12:06pm
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post #100 of 111
First time poster here...

I've gotten the i5 670 and Gigabyte H55M-USB3 mobo deal from Fry's this weekend, as a gift from my parents (I'm a little bit disappointed but I don't want to be rude, plus I really need the computer anyways so I stuck with it). It works much better than my previous processor (the AMD Athlon 64 fx).

Now, I have absolutely NO idea how to overclock anything. I've never done it before in my life, but I wanted to see what I could do. I'm still using integrated graphics (I'm ordering a Radeon HD 5850 this week though, however) but here's what I've gotten so far. I only increased the bclock, by the way.



I'm also using stock Intel cooling, and I don't believe I'll be upgrading it or whatever. I probably sound like a total nub, but even I know that I can probably get it to faster speeds.

Anyways, any advice on what to do? I'm probably going to start fiddling with the voltage and memory stuff when I get my graphics card, but I'm terrified of the possibility I might fry my CPU or something (I'm a little bit tight on cash at the moment). Plus, I don't know what to adjust anything to afterwards. I just wanna join the club with faster speeds
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