evga 680i w/e8400 fsb limit ?

[dalekdukesboy]

I have done some searching around and seems this is either an uncommon combo (unlikely) or I just haven't seen any specific postings on the matter, but I have a C0 stepping e8400 and highest fsb I can get is 525 with an 8x multi so 4.2 ghz, is this good, bad, great? Also I can only do this with the fsb voltage for the cpu set at 1.5, and I'm concerned if that's safe or just too much, I've seen some posts saying don't use it higher than 1.3-1.4 but haven't seen a lot of good reasoning or facts to back it up. Also if anyone else has this combo or knows people who have this combination or similar post here or message me, I'd like to do more overclocking/experimenting but it's always nice to have a few people who are doing the same who I can converse with especially if they are doing the same thing. Any info/opinions on any of this is appreciated thanks!

[Xazax]

For a 680i i'd say thats great!

[crush3r]

Yes thats good for a 680i, my 650i's (very similar) limit is 475fsb with an e7300 and thats with an HR-05 cooling the NB too!

[dalekdukesboy]

thanks to both of you, I did think it was nothing to sneeze at, I'm just still looking to get the best super pi score 1mb I can and submit it to the thread on here, as well as just find a very high but safe overclock that isn't going to fry my board or processor...tough balance to achieve! Again it's all fine and good but I'm not so sure if the 1.5 volts on the fsb cpu is excessive or within reason...I've only seen a few people really talk about it and it appears very critical in overclocking, if I have it too low it's completely unstable and crashes when you have the fsb much over 450 it seems.

[Xazax]

My old EVGA 680i capped around 1920FSB(470~80) so thats very amazing i didnt know the 680i's had it em in.

1.5v is fine for Overclocking but nothing you wanna keep your processor at 24/7

[crush3r]

On my board the 'auto' setting is good for 475 and if i set it manually i actually had worse overclocks so maybe trying auto? but 1.5V for the NB isnt too high, what cooling do you have on it? stock?

[dalekdukesboy]

thanks xazax...now you did catch I said FSB voltage, not the processor core voltage, I think I got away with as little as 1.41 volts or so for the core cpu voltage which to me is quite low for this processor at 4 ghz + unless you take the intel spec of 1.36 volts max safe voltage for constant use. So anyway assuming we're on the same page what is the safe 24/7 voltage? 1.3 or do you think 1.4 is ok?

[3870x2]

Originally Posted by dalekdukesboy

thanks to both of you, I did think it was nothing to sneeze at, I'm just still looking to get the best super pi score 1mb I can and submit it to the thread on here, as well as just find a very high but safe overclock that isn't going to fry my board or processor...tough balance to achieve! Again it's all fine and good but I'm not so sure if the 1.5 volts on the fsb cpu is excessive or within reason...I've only seen a few people really talk about it and it appears very critical in overclocking, if I have it too low it's completely unstable and crashes when you have the fsb much over 450 it seems.

you mean 1m (where 1m = 1,000,000 digits)?
4.2 is probably the best you are going to get on that mobo on air.

[Asylum]

Whats your temps running at with that voltage at load?

[dalekdukesboy]

ok maybe crush is the one confused my northbridge is at 1.55 volts actually, highest it goes anything lower isn't really stable with this high fsb, that doesn't worry me, it was the processor FSB voltage I was concerned with, 1.2 -1.5 is what you can set it to I believe, and once you get the fsb really high you have to crank up that setting or I notice it crashes if you make it to windows, and often you don't get that far so it seems a very must have voltage adjustment for the cpu to function with a high fsb. I'm no expert, I'm just going on my experimenting and what I've seen works and doesnt...

[dalekdukesboy]

[QUOTE=3870x2;1129625]you mean 1m (where 1m = 1,000,000 digits)?
4.2 is probably the best you are going to get on that mobo on air.[/QUOTE

yes to the pi question...and happy to say negatory to the 4.2 max, that is my max on an 8x multiplier...but with a 9x multiplier I have had it boot into windows and did a cpuz screenshot at 4.61 ghz...

[crush3r]

im not confused i know you meant fsb voltage :P mine goes up to 1.7V
although im not sure what you mean by 'processor FSB voltage' do you mean Vcore?

[dalekdukesboy]

crusher, maybe I am calling it the wrong thing but I know it's labeled as cpu fsb in the bios...max is 1.5 volts, and the temps are 42 c/ 38 c for core 0 and 1 to the guy who asked...which is idle granted but seem fine.

[dalekdukesboy]

Originally Posted by Asylum

Whats your temps running at with that voltage at load?

oops you did say load sorry, granted I only monitored load temps so far doing a few super pi runs but highest the core got was 50'ish degrees with those settings

[crush3r]

Originally Posted by dalekdukesboy

crusher, maybe I am calling it the wrong thing but I know it's labeled as cpu fsb in the bios...max is 1.5 volts,

oh okay not sure what that is tbh
but yes you're right 1.4V is the most a 45nm cpu should be running on 24/7

[cdawall]

i didn't have an issue @1.8v 24/7 on my celerons you should be fine 24/7 unless you want to keep that cpu for the next 10yrs

[dalekdukesboy]

well...I left it idling at 1.41 volts for cpu and apparently that isn't enough...I was missing the bottom taskbar in windows and I could move the mouse but it was semi-frozen I had it higher before but I've been lowering it and seeing obviously the lowest I can get it where it's still stable to keep temps down as well as extend this cpu's life as best I can. oh, in case anyone is interested with these settings I got 11.125 seconds on 1mb super pi calculation. Another thing I'm not sure of is with super pi your memory settings...is it better to have higher mhz on the memory or better timings for super pi? Or does it make much difference?

[crush3r]

Both LOL
but on a more serious note ive found 4-4-4-11 timings @1000mhz quicker than anything up to 1200mhz on 5-5-5-18 timings

[dalekdukesboy]

ok, I kinda figured unless I can get the axeram higher than 1200 it probably was a non-factor...but I'll try it to see.

[dalekdukesboy]

got a super pi run at 10.297 with processor at 4.46 or so ghz not at the same pc at the moment, and I got this thing to 4.6 ghz in windows but only got to the second to last thread in super pi before it crashed so close but not quite, temps become an issue once this thing gets 4.5 ghz and above...I actually got 10.26 on a super pi run at 4.54 ghz but I thought I had taken a screenshot and I didn't save it! For now I am giving the processor a break so keeping it at 4.2 ghz or so and lowered the volts to 1.44 or so, once you get to 4.5 + it starts requiring 1.5-1.6 volts it's pretty crazy but I think I can get a run in at 4.75 ghz or so with the memory at 1100 mhz'ish with 4 cas timings and maybe I can shave the super pi time to around 10.1 or so...but anyway in case any of you were wondering this was some of what I spent new years day/eve doing because I'm too tired to go anywhere

[dalekdukesboy]

I hate to say this blows...but it sort of blows in a sense, I tried 526 for a fsb and beyond and literally I got it to windows at 526 and it freezed after letting it idle for a bit...seems this mobo literally stops at 525 and it seems at least with anything I can try it just will not do more...I lowered multi to 6 on processor and 526 was highest and at the highest multi 9 highest I got it was 525 so seems to be some sort of wall I hit so unless I figure it out seems I'm limited to 525 or so stably on this mobo.

[dalekdukesboy]

come on peeps, anyone care to share their knowledge on any of the components we're speaking of here or any comments? LOL I see plenty of people have glanced at the thread but no recent comments, figured I'd try and revive it if possible...also I'm trying to figure out where my "picky" component is...because I can get 4.05 ghz with this cpu at 1.35 volts and 1.3 ghz fsb and games/3d mark etc run great...but even though I can get super pi runs in up to 4.5 ghz the voltage required to do so on the processor is excessive and sometimes 3d apps crash after a while...1.65 volts with the cpu fsb set at 1.5...so once you get to 4.1 ghz and beyond the voltage required goes up exponentially with each mhz gained. So to me it seems my processor is somewhat limiting me with the C0 stepping and I don't believe it's my mobo or memory that is so much the finicky componenets. I just wish I had the E0 processor in hand to test the theory...also to see if the 525 fsb wall I seem to hit is also processor related or if that's the mobo entirely, which is entirely possible from what people say but I still have a hunch this processor just isn't real happy with high FSB and it is part of the limit as well.

[crush3r]

I'd consider urself lucky to be hitting 525mhz on a 680i tbh!
you could try upgrading the cooling in the NB, changing mine from the crappy stock passive-cooled asus (that topped originally at 390mhz) to a thermalrite HR-05 gave me a boost to 475mhz
it all depends whats cooling the NB atm. you could even just replace the thermal paste on there, but keep in mind it would void your warranty!

[dalekdukesboy]

warranty? come on...as if that's a concern This is a 95 $ special I got off ebay a month or two ago...680i evga actually it's the ar version not even the newer a1 version but with the dual core and new bios obviously it does well for itself. And you could be right, the only thing that makes me wonder is how the processor does well with not a lot of voltage to a point...then just gets really hungry for voltage once I get beyond a certain ghz 4.1 or so and also the fsb voltage needs to go up considerably once you get much beyond 1900 fsb or so...but up to the 1800's in fsb it's a cinch. Anyway after selling a few components and tax refund money I may get the e8600 and maybe by then it'll go down a bit in price anyway as ultimately the 8400 and recently 8500 did, also want to pick up either a gtx285 or the new 55 nm 260 again when the prices cool off a little, also the 285 isn't out for a few days so can't get it yet anyway My (2) 8800gts 512's are nice but somewhat long in the tooth...

[dalekdukesboy]

Originally Posted by crush3r

I'd consider urself lucky to be hitting 525mhz on a 680i tbh!
you could try upgrading the cooling in the NB, changing mine from the crappy stock passive-cooled asus (that topped originally at 390mhz) to a thermalrite HR-05 gave me a boost to 475mhz
it all depends whats cooling the NB atm. you could even just replace the thermal paste on there, but keep in mind it would void your warranty!

well guess I'm just really lucky, for I have done some fiddling around got my case all back together and have better airflow with better cable routing and maybe a few other minor changes lead to getting a few more mhz on the fsb...almost to 530 actually...