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post #331 of 560
OK. I was going to swap out my cpu, but then disaster struck. I saw this bit of dried TIM on the outermost pins of my socket. So I swabbed it with Arcticlean, picked with a toothpick, blew it out. No joy. So I picked up the case and flipped the MB upside down. Whoops! forgot to remove the plastic spacers, which began to fall. I flipped it back, saving two spacers, then watched where another fell, but lost number four. Searched the basement. Even offered my sharp eyed daughter $10 if she found it. Neither of us ever found it. Rats.

But just today the 775/1156/1366 adapter for my CM Hyper 2600R arrived. It comes with an R4, and I have another R4 (the Meghalems test series) so I put it all together. Don't get one of these unless they make a 2600R Evo, BTW. Stupid hard to mount, and it makes a lot more noise than my D14, but it's in.

Oh yes, so is the i7 875K, courtesy of Micro Center (for $250 I couldn't pass it up). Why swap out the 860? It occurred to me that the 875k is an 870 with bells and whistles. At the very least I should be able to run the multiplier one notch higher than the 860, right?

So I booted it up, but now I'm looking at 4368MHz. What gives? The Turbo Boost was set to Auto, of course. My multi was set to 22x but my TB got me to 24x. That's a +2 on all four cores, which seems to be a fairly aggressive TB. I couldn't boot to 182x26, so I set it to 133x30, so now I'm at 3990MHz. Now to creep up that bclk and see how high I can go. Later I'll see what this cooler is capable of with this chip.
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post #332 of 560
Alright...I kinda let the BIOS do the OCing for me on mostly auto settings, but it says it's OCed to 180x20, and goes up to 180.55x24 (supposedly 4.32GHz).

Now, when people say they got "4.2GHz"...does that mean on 1 core? or on all 8 threads on an i7?

When I get a OC on the AMD 555BE at 3.96GHz, it's all 4 cores.

Thanks for your input.
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post #333 of 560
When they say I got "XGHz" that means w/e they see on CPU-Z or another program to show their clock.
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post #334 of 560
Okay...cause when I had RealTemp up I was hitting 64C full load with LinX running 10000 problems and it was going to 180x20 (3.6GHZ) across all cores, but whenever I think it went to 1 core it was going up to 180x24 ((4.32GHz) on 1 core. I know that video said something about it having "speed bins", but I didn't see any of that in the MSI BIOS. So, I'm letting it grind away.

It seems to be OCing steady at 4.32GHz. I will have to read up on it. This is my first Intel chip in a system since I bought a new P5-120 box from ABS Computers back in 1995. So, I'm an intel newb...again...

Thanks, SecrtAgentMan for ur quick reply
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post #335 of 560
Yep, now remember that's usually when people say it, if not then they'll mention that it's on one core.

How do you manage to only run one core?
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post #336 of 560
CPU affinity. You can assign the process to run on one core.

But, you can also see it happen in RealTemp when the one core stays in the 50s-60s and the rest drop down to the 30s and the clock speed jumps up to like 4.33GHz.

I run Windows XP Professional x64 on all my rigs, BTW...since I have about 13 CDs/keys left til I run out.

I might try and squeak some more speed out of that bad boy tomorrow. I think I can raise the CPU ratio and lower the bclock a little and maybe get it to 4GHz on all cores.

BTW...just for note...I got a i7-875K on an MSI H55-GD65 (I think it is) mobo
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post #337 of 560
Pfagh. ET6 will let me get to 30x144, but when I creep it up to 145, it resets the multi to 23x. Pfaugh.

And - staying within the 1.4v limits for Vcore and Vtt, it won't let me go very high at all - certainly not the 4664MHz my 860 could go. And now LinX crapped out at 134x30.

I suppose I'll find a stable 4GHx OC, but so far it's not as much of an oc'er as the 860.

The one nice thing: the big Cooler master is doing a good job of keeping the temps reasonable for the OC.
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post #338 of 560
Quote:
Originally Posted by ehume View Post
Pfagh. ET6 will let me get to 30x144, but when I creep it up to 145, it resets the multi to 23x. Pfaugh.

And - staying within the 1.4v limits for Vcore and Vtt, it won't let me go very high at all - certainly not the 4664MHz my 860 could go. And now LinX crapped out at 134x30.

I suppose I'll find a stable 4GHx OC, but so far it's not as much of an oc'er as the 860.

The one nice thing: the big Cooler master is doing a good job of keeping the temps reasonable for the OC.
My experience is about the same as your's. 860 clocks higher on less voltage then the 875K. The one nice thing about the 875K is I can run the DRAM at it's rated speed of 2200Mhz with the CPU at 4.4Ghz, of course I need 1.55v to run 4.4Ghz on the 875K.
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post #339 of 560
@R00ST3R

Since you have a Evga P55 board I wonder if you have test the new A71 bios with the "Turbo Mode Multiplier Customizing for K Series Processors" and
"CPU Clock Skew Setting"?

If you have, how does the Turbo Mode works with i7 875k, bios pics maybe?


The CPU Clock Skew may yield better stability with high bclk, 200+.
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post #340 of 560
Quote:
Originally Posted by Ghostleader View Post
@R00ST3R

Since you have a Evga P55 board I wonder if you have test the new A71 bios with the "Turbo Mode Multiplier Customizing for K Series Processors" and
"CPU Clock Skew Setting"?

If you have, how does the Turbo Mode works with i7 875k, bios pics maybe?


The CPU Clock Skew may yield better stability with high bclk, 200+.
Ya know, I'm still using A70. I'll get the A71 BIOS revision installed today, and have a go with it this evening. Good call, wasn't even aware a new BIOS was out for it. Thank's .
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Black Dynamite
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