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Wanting to OC i7 950 @ 4.0GHz

post #1 of 16
Thread Starter 
So I am wanting to OC my i7-950 at 4.0GHz, but I am going to be using the Corsair A70, people kept telling me It would be too hot etc, but then I see this review on newegg...

Code:
Pros: It keeps my Core i7 950 OC'ed to 4.1GHz at 30C on idle and 35C on gaming load.

Other Thoughts: CoolerMaster HAF922
EVGA X58 SLI3
Core i7 950
GIGABYTE Super OC GTX470
Samsung Spinpoint F3 500GB
G.SKILL 1600 6GB
XFX 650W
Does that mean there are some special settings to keep it cool at 4.0GHz, or will it do fine with this guide http://www.overclock.net/intel-cpus/...920-930-a.html
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post #2 of 16
Intel data sheet lists absolute maximum voltages for the 900 series i7 as follows

CPU Core - 1.55
CPU VTT - 1.35

try to get it stable with the lowest voltage you can , you should be fine with a H70 ( IM REALLY HAPPY WITH MINE)
I have my I7-950 running 4.0ghz 24/7 stable a few months now( its running great! ). Here are my numbers hope its a little help to you!

CPU-Z

http://valid.canardpc.com/show_oc.php?id=1681159


Freq : 4022.05 MHz (191.53 * 21)


E-LEET

+3.3v---------3.23v
cpu vcore-----1.32v
dram----------1.52v
cpu vtt--------1.27v
nb core-------1.30v
+5v-----------4.96v
+12v----------12.11v
vsb3v---------3.28v
vbat-----------3.18v

Temps at load! ( 24hrs+ PRIME 95 )

cpu------55.0c
vreg-----72.0c
system--34.0c

core#1--67.0c
core#2--67.0c
core#3--66.0c
core#4--62.0c
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post #3 of 16
Thread Starter 
Br0000000000 its a70 not h70 please read, but thanks for the numbers.
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post #4 of 16
or you can try the 175x23 setting..

cpu vcore:1.32v
cpu uncore multiplier:x16
memory multiplier: x8
dram:1.65v
cpu vtt:1.27-1.32vv
nb core:1.16-1.18v

also loosen up your memory timings to cas 8 or 9..

your gonna be Fine on the A70 as long as you put a nice set of fans on it like Gentle Typhoons or a fan that can max out on 90CFM..air flow inside the case also helps alot..so make sure you prep up the case with decent fans before doing so..
Edited by kairi_zeroblade - 3/27/11 at 10:57pm
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post #5 of 16
I cant see how the guy on newegg can be trusted, unless his PC is in an igloo there is no way he is running a 950 @ 4.1 and getting 35c load.....

Mine gets 78c load (Prime95) @ 4.24, its around 73c @ 4.0 and its on h2o
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post #6 of 16
Thread Starter 
Quote:
Originally Posted by 10acjed View Post
I cant see how the guy on newegg can be trusted, unless his PC is in an igloo there is no way he is running a 950 @ 4.1 and getting 35c load.....

Mine gets 78c load (Prime95) @ 4.24, its around 73c @ 4.0 and its on h2o
Yeah I thought that was fishy or he just has no clue what hes saying.
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post #7 of 16
I would avoid the A70 for serious overclocks like you are talking about. My 950 @ 4ghz w/HT on will hit 77c.
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post #8 of 16
Thread Starter 
Quote:
Originally Posted by Dunkler View Post
I would avoid the A70 for serious overclocks like you are talking about. My 950 @ 4ghz w/HT on will hit 77c.
Do you think I could get a 3.6 - 3.8 around there?
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post #9 of 16
3.6 would be rather easy, very possible on stock vcore.
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post #10 of 16
I ran 4.0 Ghz on my 920 with a Xigmatek Dark Knight with load temps up to around 65 C (folding, Prime95, etc)
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