AMD FX OC'ers Club

[Nicholas Peyton]

Need 1.4875v for a "completely" stable 4800ghz. Can boot on lower but fails stress tests.

Is that really bad? I am cooling with a 'Corsair H80i GT 49mm thick, 120 (single) radiator'. Can't really get past this due to needing 1.55v + 150mv offset to get 5ghz and temps are 55-60c at idle so can't test for stability.

If I went 34mm thick 360triple) radiator with EK block how far do you think I could go? Max voltage setting for board is 1.55v and can also add either a +50mv, +100mv or +150mv using "offset" setting.

 

[TheoneandonlyMrK]

Need 1.4875v for a "completely" stable 4800ghz. Can boot on lower but fails stress tests.

Is that really bad? I am cooling with a 'Corsair H80i GT 49mm thick, 120 (single) radiator'. Can't really get past this due to needing 1.55v + 150mv offset to get 5ghz and temps are 55-60c at idle so can't test for stability.

If I went 34mm thick 360triple) radiator with EK block how far do you think I could go? Max voltage setting for board is 1.55v and can also add either a +50mv, +100mv or +150mv using "offset" setting.

Not as far as you might think mines like yours and to get past 5ghz takes 1.6v+ for me plus it gets hard to keep the internal core temp in the black so to speak and I have plenty of fully push pull rad on it.

 

[Nicholas Peyton]

Not as far as you might think mines like yours and to get past 5ghz takes 1.6v+ for me plus it gets hard to keep the internal core temp in the black so to speak and I have plenty of fully push pull rad on it.

You on air?

 

[TheoneandonlyMrK]

You on air?

No my system is listed 2x360rad 1x 120rad 4 blocks

 

[Nicholas Peyton]

No my system is listed 2x360rad 1x 120rad 4 blocks

sake that's a beast lol -- and you still struggle to keep that CPU cool? argh oh well I will see how I get on lol...

Is this because of the limit of thermal transmission at the block or because you could use more radiator capacity? (I am assuming the first although would be nice to hear that it was the 2nd as I am going water soon and am looking forward to seeing some nice results) -- hoping I'm not going to be too disappointed with my own setup.

 

[TheoneandonlyMrK]

sake that's a beast lol -- and you still struggle to keep that CPU cool? argh oh well I will see how I get on lol...

Is this because of the limit of thermal transmission at the block or because you could use more radiator capacity? (I am assuming the first although would be nice to hear that it was the 2nd as I am going water soon and am looking forward to seeing some nice results) -- hoping I'm not going to be too disappointed with my own setup.

That's exactly it , I could try a few blocks but a don't think this alpha cool one is that far behind the curve , some like mine are very leaky I can get 5.4 max but at 1.65 with all other clocks absolutely flat ie nb 2200 Ht 2200 memory 1333 and with my cooling set flat out but I would not dare do more than bench at that speed, I do fold and crunch at 4.7 though and my GPUs @ 1350 with a latent water temp and component temp of 50 degrees 24/7 with fans below 30 is db so I know my PCs thermals aren't weak.

 

[Nicholas Peyton]

I wonder what it is inside of us that 'drives' us to want to cool and overclock our systems when it would probably be cheaper just upgrading lol.

I just used the configurator on EK and it came out at over £700 for the setup I want.... was forced to change it and got it down to £500... then decided I still couldn't afford it and then decided I'd go 'CPU only' to start with then managed to find a "kit" with massive savings but still all the same components for about £300 (the EK P360). I'll start small and build it up.

Or I could have just saved for three months and went for a new 'i7 6850k' but for some reason I just don't want to do that. After my relentless voltage attack on my poor 8350 its still never let me down and I I've grown slightly fond of it lol

 

[Durvelle27]

Need 1.4875v for a "completely" stable 4800ghz. Can boot on lower but fails stress tests.

Is that really bad? I am cooling with a 'Corsair H80i GT 49mm thick, 120 (single) radiator'. Can't really get past this due to needing 1.55v + 150mv offset to get 5ghz and temps are 55-60c at idle so can't test for stability.

If I went 34mm thick 360triple) radiator with EK block how far do you think I could go? Max voltage setting for board is 1.55v and can also add either a +50mv, +100mv or +150mv using "offset" setting.

That's actually not bad

My FX-8320 needed 1.55V just to hit 4.8GHz stable

My 8350 did 4.8GHz at 1.45V and 5.1GHz at 1.5V stable

5.3GHz took over 1.55V

 

[eidairaman1]

That's actually not bad

My FX-8320 needed 1.55V just to hit 4.8GHz stable

My 8350 did 4.8GHz at 1.45V and 5.1GHz at 1.5V stable

5.3GHz took over 1.55V

Yeah by that time I'd need to go water lol

 

[Durvelle27]

Yeah by that time I'd need to go water lol

I was on water 3x240mm Radiators

 

[Mrblack761]

My CPU underclocks to 4.3ghz from 4.4ghz for like a second when under load. Is that a bad thing? I mean at least it doesnt go down to 1.8ish Ghz like it used to.

AMD FX 8320 @ 4.4Ghz/H100i
HyperX 2x8GB RAM
ASUS M5A99FX MB

 

[Nicholas Peyton]

I was on water 3x240mm Radiators

I am struggling to decide whether to go for an extra thick 480mm radiator and place it on the outside, top of my case. Or go with a medium thick 360mm radiator.

/\ /\ would have to somehow drill a few big holes for the tubing :-(

Really wishing I'd just bought the Corsair 900D case now instead of the 750d. if I went the 480 route I'd obviously upgrade to the 900d some time in the future. But kind of annoyed about that because I only just got the 750d and its still a mammoth compared to my old OEM case.

 

[Nicholas Peyton]

My CPU underclocks to 4.3ghz from 4.4ghz for like a second when under load. Is that a bad thing? I mean at least it doesnt go down to 1.8ish Ghz like it used to.

AMD FX 8320 @ 4.4Ghz/H100i
HyperX 2x8GB RAM
ASUS M5A99FX MB

That's just 'AMD Turbo Core' technology -- nothing to worry about

And the down-clocking to 1.8ghz is an energy saving feature - which won't happen under load. You can switch it on or off in BIOS.

 

[Johan45]

My CPU underclocks to 4.3ghz from 4.4ghz for like a second when under load. Is that a bad thing? I mean at least it doesnt go down to 1.8ish Ghz like it used to.

AMD FX 8320 @ 4.4Ghz/H100i
HyperX 2x8GB RAM
ASUS M5A99FX MB

Most likely that variance is from the PLL chip on that ASUS board. Seems to be the same on all of them.If it were throttling it would dipp to ~ 3400MHz. The 1.8 GHz was likely seen while cool and quiet or C states were enabled.

 

[Random Murderer]

Most likely that variance is from the PLL chip on that ASUS board. Seems to be the same on all of them.If it were throttling it would dipp to ~ 3400MHz. The 1.8 GHz was likely seen while cool and quiet or C states were enabled.

My thoughts exactly.

 

[Johan45]

I figured it's been a while and this thread needs a bump. Recently picked up a new FX8370 with the price drops and thought I'd post this up Done on my "cold" loop. 5.733G 1.65v

 

[Nicholas Peyton]

Changing my OC method to bus. So bus at 240 (4.8ghz).

However can't get PC to boot with memory at anything more than 1599mhz with this. Next step up is 1949mhz. Even tried a 14, 15,15. 40 (and 39).

When I OC using multiplier I can get my memory to 2133mhz fully stable.

Any help appreciated

 

[Johan45]

What's your NB speed?

 

[Nicholas Peyton]

What's your NB speed?

Both nb and hygiene are at 2400.

 

[Nicholas Peyton]

Typo; HT sorry.

 

[Johan45]

Best if you post up some shots of CPUz main, SPD and memory tabs.
Does your memory work properly if the system is at stock and you enable the DOCP

 

[Nicholas Peyton]

Okay give me 20 mins and I'll do that. Thank you ;-)

 

[Nicholas Peyton]

Hi am I the only one who couldn't get onto these forums last night?

Was getting a 'bad gateway error"

 

[cdawall]

I didn't have any issues, but I zonked out at about 11P

 

[JrRacinFan]

Hi am I the only one who couldn't get onto these forums last night?

Was getting a 'bad gateway error"

You weren't the only one.