e8400 to 5gz, is that even possible? And can I do a safe 4500 with 1.4v and load temp below 65C

dofey · 03-15-09, 07:12 PM

Ey,

Is it possible to do 5gz with e8400 on air?
Water cooling possibe?

Can I do my e8400 to 4500 with 1.4volt?
If I keep load temp below 65*C

Conumdrum · 03-15-09, 07:15 PM

Watercooling won't do it. You'd have to pump the voltage so high watercooling can't do it. If you can keep your load temps to 65C in benching situations (not the best for 24/7) sure why not try.

Not every chip/mobo/mem setup can do it. You have the best fastest mobo, a cherry chip, top notch ram and very very good cooling all you can do is try. At those levels of overclocking it's more of an art than easy science.

dofey · 03-15-09, 07:23 PM

Ye, guess so.

OC'ing is sort of cool.

It was like, entering bios, increase FBS from 333 to 450, and there u go, brand new CPU. Wish I had learned a bit more about OC eariler

I can try 500*8.5 on Asus P5Q Deluxe and Triton 85 without risking my hardware if temps stay below 65C and idle on 40?

DarkFury · 03-15-09, 07:42 PM

ive came close to 5ghz, on AIR.. but temps were VERY high ... i had 1.488 vCore. stable for about 10 minutes.

ive hit 5.05 ghz on phase though .. with 1.55vcore .. not very great for 24\7 nor gaming.

dofey · 03-15-09, 07:44 PM

9*500 or something?

dofey · 03-15-09, 07:45 PM

well, you think i can do stable 4500?

DarkFury · 03-15-09, 07:53 PM

maybe, it depends on ALOT of variables. whatever works for you might not work for anyone else.

dofey · 03-15-09, 07:55 PM

According to your sig your running at 4750 with 34 temp load?

You live in an igloo or?

DarkFury · 03-15-09, 08:22 PM

its actually 4275 ( 475*9=4275) @ 1.3Vcore , a 4000 RPM fan, + 22C ambient , and a case temp of 22.45C

EDIT typo

dofey · 03-15-09, 08:27 PM

ye, right... It's 2.24 am here :/

a bit ot but: I see you have ssd from ocz. I'm thinking about buying this and have my OS on it. Is that a good idea? Will the boost from a 10k rpm > to ssd be noticed?

DarkFury · 03-15-09, 08:31 PM

not really, SSD has basically NO response time , but it stutters.. Mine is starting to stutter BAD!

if you already have a 10k rpm , i say no

you don't get a great read\write speeds compared to a 10k Raptor. but as a boot drive it doesnt really matter as much.

The only problem with using as a boot drive is it freezes from the boot screen to the log in screen.

http://www.bit-tech.net/news/2008/07...velociraptor/1

doz · 03-15-09, 09:04 PM

Ummm, watercooling will do 5ghz, but the problem with the 8400 is the low multiplier.

You will run into problems w/ the low multi (9) before temps. I run my E8400 @ 1.538v w/ watercooling and it stays about 25c from TJMax. The new E0's dont need even that much voltage to reach 5ghz (well atleast most). With an E8600, 5ghz is plenty doable (500x10) on water IMO.

E8400, not so much (555mhz FSB is really too much for stability).

||Console|| · 03-15-09, 10:15 PM

4.5 takes 1.52v to be stable on my E0 I dont even want to know what it would take for 5ghz stable =)

deathman20 · 03-15-09, 10:19 PM

Quote:

Originally Posted by doz

Ummm, watercooling will do 5ghz, but the problem with the 8400 is the low multiplier.

You will run into problems w/ the low multi (9) before temps. I run my E8400 @ 1.538v w/ watercooling and it stays about 25c from TJMax. The new E0's dont need even that much voltage to reach 5ghz (well atleast most). With an E8600, 5ghz is plenty doable (500x10) on water IMO.

E8400, not so much (555mhz FSB is really too much for stability).

So what the CPU temp is 75C? That is quiet hot for a C2D.

doz · 03-15-09, 10:45 PM

And? Whats temperature have to do with anything if its stable and within spec?

Intel states 20c from TJ is the "max safe" limit and Im already proving that 1.45v + is plenty doable w/ these chips.

I think these chips can takea lot more punishment than most people think, but alot are just too worried about killing the chip.

Ive had my chip at over 1.5v for a full month, and it was at 1.48v for about 2 weeks before that, and 6 months it was running @ 1.38v.

So I dont believe in Intel's 1.368v "safe" limit

satandole666 · 03-15-09, 10:56 PM

I was able to set 24/7 settings with my C revision E8400 at 4.5ghz. With the newest revision it should be a bit easier.

5ghz daily will require either chilled water or phase cooling though. It took a TOTL water setup for me to get 4.5ghz stable for 24 hours prime (1.504v I believe) and hitting 5ghz for a screenie took open windows with cold air and around 1.6v.
In the end I just dropped the FSB down to 450mhz and the chip ran at 4050mhz with just less than 1.4v. The difference between the 4ghz and 4.5ghz setting was almost negligible for me.

deathman20 · 03-16-09, 08:22 AM

Quote:

Originally Posted by doz

And? Whats temperature have to do with anything if its stable and within spec?

Intel states 20c from TJ is the "max safe" limit and Im already proving that 1.45v + is plenty doable w/ these chips.

I think these chips can takea lot more punishment than most people think, but alot are just too worried about killing the chip.

Ive had my chip at over 1.5v for a full month, and it was at 1.48v for about 2 weeks before that, and 6 months it was running @ 1.38v.

So I dont believe in Intel's 1.368v "safe" limit

If its hot, there might be no way to make it to 5Ghz stable and within spec. Hot = Decreased clocking abilities expecially at that high of speeds.

The next question is how warm is the NB and is it stable for say 560Mhz?

I know my E8400 is a cold runner and low voltage one at that. 1.225V from CPU-z for 4.05Ghz with temps around 42-45C full load, and she could do upwards of 4.3Ghz but my board was holding me back. No doubt these chips can move, the E0's have a better chance than the late C0's but even C0's clock nicely too. 5Ghz just might be a little too ambitious if its not on some good water cooling at least.

Zhut · 03-17-09, 08:03 AM

I have seen records set for highest fsb on chips but are there records for chips getting to a highest ghz? There would have to be I would think. Would be a fun competition.

DarkFury · 03-17-09, 11:38 AM

well these 8400's are the best chips for FSB, i mean what other chip do you know of that can reach 600+ FSB????

to get 600+ FSB and 9x multi ... you must have a BeasT of a board , ( Tpower-45!) and be willing to push 1.6+Vcore.

max ive done was 1.57 on Phase. but that was for like 10 minutes...

Speedtime.Wing reached 710.37 MHz with an Intel Core 2 Duo E8400 (45 nm) [Details]
MB : Biostar TPower I45 (Intel P45 rev A2) - RAM : OCZ 1024 MB

Boblemagnifique LN2 Ixtk reached 6761.43 MHz with an Intel Core 2 Duo E8600 (45 nm) [Details]
MB : Biostar TPower I45 (Intel P45 rev A2) - RAM : Crucial Technology 2048 MB

Gautam · 03-17-09, 11:43 AM

Quote:

Originally Posted by DarkFury

ive hit 5.05 ghz on phase

03-15-09, 07:12 PM	Thread Starter #1
dofey Registered Join Date: Mar 2009	e8400 to 5gz, is that even possible? And can I do a safe 4500 with 1.4v and load temp below 65C Ey, Is it possible to do 5gz with e8400 on air? Water cooling possibe? Can I do my e8400 to 4500 with 1.4volt? If I keep load temp below 65*C
	QUOTE Thanks

03-15-09, 07:15 PM	#2
Conumdrum Mutant Forrespondent Join Date: Sep 2007 Location: Las Vegas	Watercooling won't do it. You'd have to pump the voltage so high watercooling can't do it. If you can keep your load temps to 65C in benching situations (not the best for 24/7) sure why not try. Not every chip/mobo/mem setup can do it. You have the best fastest mobo, a cherry chip, top notch ram and very very good cooling all you can do is try. At those levels of overclocking it's more of an art than easy science. __________________ All stock for now, no need for more, but it's gonna be soon methinks. Giga Xtreme 58 mobo i7 965 ES D0 step Corsair 1600 6 gig SLI GTX470 OC when I need it to 870 GPU/1725 mem EK HF nickle blue top CPU block (free from Eddie) Koolance 470 waterblocks One big loop, two 120x3 rads. Pa 120.3 and XSPC RX 120x3. Swiftech 35x pump with V2 restop. GT AP15 fans. Banchetto Tech Station 120 GB SSD, and a few other drives. 1000W UltraX3 PSU, 900 watt (1500VA UPS 27" ASUS VG 3D/Nvidia V2 3D glasses and 24" Acer H243H UPS is 1500 PFCLCD
	QUOTE Thanks

03-15-09, 07:23 PM	Thread Starter #3
dofey Registered Join Date: Mar 2009	Ye, guess so. OC'ing is sort of cool. It was like, entering bios, increase FBS from 333 to 450, and there u go, brand new CPU. Wish I had learned a bit more about OC eariler I can try 500*8.5 on Asus P5Q Deluxe and Triton 85 without risking my hardware if temps stay below 65C and idle on 40?
	QUOTE Thanks

03-15-09, 07:42 PM	#4
DarkFury Member Join Date: Feb 2009 Location: Tucker, GA	ive came close to 5ghz, on AIR.. but temps were VERY high ... i had 1.488 vCore. stable for about 10 minutes. ive hit 5.05 ghz on phase though .. with 1.55vcore .. not very great for 24\7 nor gaming.
	QUOTE Thanks

03-15-09, 07:44 PM	Thread Starter #5
dofey Registered Join Date: Mar 2009	9*500 or something?
	QUOTE Thanks

e8400 to 5gz, is that even possible? And can I do a safe 4500 with 1.4v and load temp below 65C

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03-15-09, 07:45 PM	Thread Starter #6
dofey Registered Join Date: Mar 2009	well, you think i can do stable 4500?
	QUOTE Thanks

03-15-09, 07:53 PM	#7
DarkFury Member Join Date: Feb 2009 Location: Tucker, GA	maybe, it depends on ALOT of variables. whatever works for you might not work for anyone else.
	QUOTE Thanks

03-15-09, 07:55 PM	Thread Starter #8
dofey Registered Join Date: Mar 2009	According to your sig your running at 4750 with 34 temp load? You live in an igloo or?
	QUOTE Thanks

03-15-09, 08:22 PM	#9
DarkFury Member Join Date: Feb 2009 Location: Tucker, GA	its actually 4275 ( 475*9=4275) @ 1.3Vcore , a 4000 RPM fan, + 22C ambient , and a case temp of 22.45C EDIT typo
	QUOTE Thanks

03-15-09, 08:27 PM	Thread Starter #10
dofey Registered Join Date: Mar 2009	ye, right... It's 2.24 am here :/ a bit ot but: I see you have ssd from ocz. I'm thinking about buying this and have my OS on it. Is that a good idea? Will the boost from a 10k rpm > to ssd be noticed?
	QUOTE Thanks

03-15-09, 08:31 PM	#11
DarkFury Member Join Date: Feb 2009 Location: Tucker, GA	not really, SSD has basically NO response time , but it stutters.. Mine is starting to stutter BAD! if you already have a 10k rpm , i say no you don't get a great read\write speeds compared to a 10k Raptor. but as a boot drive it doesnt really matter as much. The only problem with using as a boot drive is it freezes from the boot screen to the log in screen. http://www.bit-tech.net/news/2008/07...velociraptor/1
	QUOTE Thanks

03-15-09, 09:04 PM	#12
doz Member Join Date: Nov 2002 Location: Las Vegas, NV	Ummm, watercooling will do 5ghz, but the problem with the 8400 is the low multiplier. You will run into problems w/ the low multi (9) before temps. I run my E8400 @ 1.538v w/ watercooling and it stays about 25c from TJMax. The new E0's dont need even that much voltage to reach 5ghz (well atleast most). With an E8600, 5ghz is plenty doable (500x10) on water IMO. E8400, not so much (555mhz FSB is really too much for stability). __________________ Asus P8P67 Intel i7-2600k @ 4.9ghz GSkill Ripjaws 8gb 1600mhz c8 EVGA GTX 680 OCZ Agility 2 240gb, Corsair Force 3 180gb, (2)WD 1tb Black HAF 932w/ Corsair HX750 Heat
	QUOTE Thanks

03-15-09, 10:15 PM	#13
\|\|Console\|\| Join Date: Jul 2004 Location: Halifax, NS	4.5 takes 1.52v to be stable on my E0 I dont even want to know what it would take for 5ghz stable =) __________________ [CPU]---[E8400 E0 @ 4.5ghz 1.38v][MainBoard]---[XFX 780I] [GFX]---[ATI 6950 2Gig ][RAM]---[OCZ PC-6400 2x2gig 5-4-4-15 @ 1.9v ] [PSU]---[Corsair HX 620w][Cooling]---[Antec 900 / TR 120E ] [Display]---[ Ben-Q E2200HD 1920x1080][HDDs]---[ 3x250 Seagate 7200.10 Raid 0 /2x1Tb WD Storage] " If that Bong is filled with the right stuff you wouldn't give a damn how much noise the cooling system made lol" ViperJohn
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03-15-09, 10:45 PM	#15
doz Member Join Date: Nov 2002 Location: Las Vegas, NV	And? Whats temperature have to do with anything if its stable and within spec? Intel states 20c from TJ is the "max safe" limit and Im already proving that 1.45v + is plenty doable w/ these chips. I think these chips can takea lot more punishment than most people think, but alot are just too worried about killing the chip. Ive had my chip at over 1.5v for a full month, and it was at 1.48v for about 2 weeks before that, and 6 months it was running @ 1.38v. So I dont believe in Intel's 1.368v "safe" limit __________________ Asus P8P67 Intel i7-2600k @ 4.9ghz GSkill Ripjaws 8gb 1600mhz c8 EVGA GTX 680 OCZ Agility 2 240gb, Corsair Force 3 180gb, (2)WD 1tb Black HAF 932w/ Corsair HX750 Heat
	QUOTE Thanks

03-15-09, 10:56 PM	#16
satandole666 Member Join Date: Dec 2004 Location: Columbus, OH	I was able to set 24/7 settings with my C revision E8400 at 4.5ghz. With the newest revision it should be a bit easier. 5ghz daily will require either chilled water or phase cooling though. It took a TOTL water setup for me to get 4.5ghz stable for 24 hours prime (1.504v I believe) and hitting 5ghz for a screenie took open windows with cold air and around 1.6v. In the end I just dropped the FSB down to 450mhz and the chip ran at 4050mhz with just less than 1.4v. The difference between the 4ghz and 4.5ghz setting was almost negligible for me. __________________ i7 920 Gigabyte X58 Extreme 6gb OCZ DDR3 2000 7970 Fuzion/MCP655/3x120 rad
	QUOTE Thanks

03-17-09, 08:03 AM	#18
Zhut Member Join Date: Jul 2008	I have seen records set for highest fsb on chips but are there records for chips getting to a highest ghz? There would have to be I would think. Would be a fun competition. __________________ Motherboard >>>>>BIOSTAR TPower I45 CPU >>>>>Intel E8400 EO 4.5ghz @1.34v Lapped Memory >>>>8GB 1150mhz OCZ Reapers 5-5-5-12 @1000mhz PL9 Cooling >>>>>>>>>>TRUE Lapped HDD >>>>>>>>>>>>640GB 32mb cache WD Caviar Graphics Card >>>>HD Radeon 5770 925/1350 Case >>>>>>>>>>Coolermaster CM690 Power Supply >>>>>Corsair 650TX My Heat>>>>>>>>>>>>> Vista 64 bit Home Premium
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03-17-09, 11:38 AM	#19
DarkFury Member Join Date: Feb 2009 Location: Tucker, GA	well these 8400's are the best chips for FSB, i mean what other chip do you know of that can reach 600+ FSB???? to get 600+ FSB and 9x multi ... you must have a BeasT of a board , ( Tpower-45!) and be willing to push 1.6+Vcore. max ive done was 1.57 on Phase. but that was for like 10 minutes... Speedtime.Wing reached 710.37 MHz with an Intel Core 2 Duo E8400 (45 nm) [Details] MB : Biostar TPower I45 (Intel P45 rev A2) - RAM : OCZ 1024 MB Boblemagnifique LN2 Ixtk reached 6761.43 MHz with an Intel Core 2 Duo E8600 (45 nm) [Details] MB : Biostar TPower I45 (Intel P45 rev A2) - RAM : Crucial Technology 2048 MB
	QUOTE Thanks

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