Asus CHV Formula overclocking

[The Stilt]

Made a simple chart illustrating the relation between VID and power consumption based on some of the FX-8150 chips I got.
Naturally there is variation even between chips with the same VID. For example those 1.2875V VID chips in the chart probably came from the same wafer.

I´m not going to tell the frequency or voltage I tested the chips with, but the conditions were identical between each chip.
The Pmax is for a whole node (4CU/8C, NB, Logics).



The 1.2375V VID chip is a newcomer.
Runs hot as hell but does 4.2G Prime95 LargeFFT stable with the stock voltage.
4.5G requires 1.31V, 4.6G 1.35V... After that 2nd (0-3) compute units starts failing due heat.
With 1.35V the chip reaches 70c easily with Ultra Kaze 3k rpm fan blowing at full throttle. How intense

Pretty strong NB it has, 2400/2400 (DRAM/NB) is fully stable with just 1.125V, 2400/2600 requires only 1.20V.
Haven´t tried 2800 with lower MEMCLK yet, that might work too.

[PolRoger]

@The Stilt

When you say that the 2nd (0-3) compute units start failing due to heat... are you able to tell which compute unit is the actual weaker unit by looking at the thread number that is erroring out or has stopped running?

[Zeus]

So, if i got this right we should be looking for chips with 1.3V vid for good clocking on water and air? Or is it the higher the vid the better? You have 9 FX chips and i can't find any here in my country other than 4100 and 6100 chips.

How unfair!

[The Stilt]

@The Stilt

When you say that the 2nd (0-3) compute units start failing due to heat... are you able to tell which compute unit is the actual weaker unit by looking at the thread number that is erroring out or has stopped running?

Yeah, because BSP (boot strap processor) is always CPU 0 in Windows.
And BSP is always Core 0 > Core 0 = CU0.

You can make sure by disabling the compute unit which seems to be failing.
If you do that you need to compensate the reduced heat dissipation by reducing the cooling.

[G.Foyle]

Hey Stilt, got any tips for more NB clocks? I seem to have a hard wall at 2876 MHz with one CPU and 2828 with another, regardless of voltage or cooling (SS and LN2, same wall). Dumo is hitting 3100+ on single stage, is it just the quality of the chip? Or might it be related to memory speed - I'm trying for max memory validation, which is a strain on the IMC.

[The Stilt]

Hey Stilt, got any tips for more NB clocks? I seem to have a hard wall at 2876 MHz with one CPU and 2828 with another, regardless of voltage or cooling (SS and LN2, same wall). Dumo is hitting 3100+ on single stage, is it just the quality of the chip? Or might it be related to memory speed - I'm trying for max memory validation, which is a strain on the IMC.

Most likely it is not NB failing but the memory.
Pretty much any chip should be able to hit 4GHz+ NB on LN2.
High MEMCLK stresses the NB heavily, however the "delta" cannot be that big.
Failing memory can look like a failing NB/IMC on K12/K15h.

With high MEMCLK/NCLK it is extremely important to get setup times, fine delays and especially drive strength correct.
When the IMC hits sub zero you need to start reducing the data drive for example.
With wrong settings you might get thousands of errors in Memtest while with the correct ones there is none.

Also for high MEMCLK & NB combination you need to latch most of the sub timings, some of them quite heavily (beyond bios range).

[BeepBeep2]

It seems like CHV has a way with ram, both Hypers and PSC are clocking much better (and easier) for me on Thuban than my 890FX board. I need to get FX though

[chew*]

I was fooling around testing this chip at an AMD demo for tiger direct.

Not to bad i'd say, custom 1920x1080 physics runs to really lay the stress on.

[Zeus]

Before biting the bullet and buying this mobo, i have some questions about this board.

Does the every bios for this board support Bulldozer cpu's or do i have to boot with my Thuban and flash bios first?

Does disabling Turbocore in bios actually work on this board? (unlike a lot of other boards)

Is it necessary to connect the extra 4-pin connector on the top side of the board? And what about that molex connector?

[hokiealumnus]

Zeus - Some of the earlier ones do not and, yes, you'd have to flash with a Thuban / Deneb. Any board you purchase now should come with a Bulldozer BIOS.

Disabling Turbocore worked just fine for me.

No it is not necessary to connect the extra 4-pin or MOLEX connectors.

I'm working with Giga on a UD7 I'm reviewing right now. It is a great board with a ton of features..... except for Vdroop. You can see the problem I'm having here. Needless to say that's unacceptable. We'll see what Giga has to say / do about it before I finish the review.

Nice. Pls post your review

FYI, this thing finally published today; you can check it out here. Long story (very long) short - those that chose to go with the Crosshair V Formula made the right decision.

[BeepBeep2]

Before biting the bullet and buying this mobo, i have some questions about this board.

Does the every bios for this board support Bulldozer cpu's or do i have to boot with my Thuban and flash bios first?

Does disabling Turbocore in bios actually work on this board? (unlike a lot of other boards)

Is it necessary to connect the extra 4-pin connector on the top side of the board? And what about that molex connector?

Yeah, all the boards support BD from the get-go. My board shipped with 0705, and I was unable to overclock with Thuban with it. "reverting" to beta 0051 fixed things...
It isn't necessary to connect the extra 4pin, however your Revo has an extra 4+4 so why not? ...it cant hurt.

Turbo disables correctly for my Thuban however until I get FX (probably not for another week or so) I couldn't say anything about that.

[Zeus]

Thanks for the replies guys.

I'll keep my Thuban a little while longer, just in case.

Yes i have a Revo PSU but all my cables are sleeved and tucked away so if i can do without this connector it saves me some sleeving. Sleeving is not the funniest job to do you know.

This turbocore thing is driving me nuts atm, having all cores running at a steady frequency would be a relief.

I have to build a new system for my parents in law so i think an Asus C4F plus Thuban 1090T will suit their needs perfectly fine.

[chew*]

Before biting the bullet and buying this mobo, i have some questions about this board.

Does the every bios for this board support Bulldozer cpu's or do i have to boot with my Thuban and flash bios first?

Does disabling Turbocore in bios actually work on this board? (unlike a lot of other boards)

Is it necessary to connect the extra 4-pin connector on the top side of the board? And what about that molex connector?

Newer shipped boards should not need a thuban to post with BD.

Disabling turbo core works right.

Yes to 4 pin at top of board.

Molex only if running heavy crossfire.

[charged3800z24]

How do you plug in the extra 4 pin on this Board? My Corsair 750w doesn't have one. I am looking at getting a new PSU, do some have this connection now?

[Dumo]

Is it necessary to connect the extra 4-pin connector on the top side of the board? And what about that molex connector?

Imo, yes...if oc'd with heavy load and Vs

How do you plug in the extra 4 pin on this Board? My Corsair 750w doesn't have one. I am looking at getting a new PSU, do some have this connection now?

Just make sure the 4 pins aligned right. My EVGA 1200W doesn't have it, so I used an xtra sever psu to connect the 4 pins power.

[Hondacity]

its an "eps" 12v connector usually its a 4+4 eps 12v

[charged3800z24]

I am using the 4+4, I don't have an extra 4pin. I can make something work, but was wondering if newer PSUs have this already

[BeepBeep2]

I am using the 4+4, I don't have an extra 4pin. I can make something work, but was wondering if newer PSUs have this already

Yeah, most new PSUs 750w + have these.

My XFX Black Edition 850w is based on the older Seasonic M12 platform (80 Plus silver) and has an 8 pin + 4+4.

[Zeus]

Ok guys, sounds good.

One more thing, did anyone take the heatsink off to check contact? This used to be a big problem for the C4F, i wouldn't be completely surprised if this board has the same problem.

[G.Foyle]

I did, it was perfect - a really nice surprise after C3F and C4F.
NB heatsink has the triple accursed sticky goo instead of a proper paste, but it doesn't heat up much so there's no need to replace it.

[Zeus]

Alrighty. Thanks man.

[hokiealumnus]

Yep, contact was great. Here's a photo from my review:

[tbone8ty]

how is the official asus 0903 bios for phenom II x6 1090t?

running 0051 beta so far, but this new mushkin enhanced blackline 2x4gb ddr3 2000 kiti got is having trouble at stock settings.

http://www.newegg.com/Product/Produc...82E16820226188

think new 0903 bios will help or should i try the 9911 or 9913 beta bios

OCCT errors out on core #0 in like 1 min

[BeepBeep2]

how is the official asus 0903 bios for phenom II x6 1090t?

running 0051 beta so far, but this new mushkin enhanced blackline 2x4gb ddr3 2000 kiti got is having trouble at stock settings.

http://www.newegg.com/Product/Produc...82E16820226188

think new 0903 bios will help or should i try the 9911 or 9913 beta bios

OCCT errors out on core #0 in like 1 min

Compatibility was generally getting worse the newer the bioses got as AGESA started leaning toward optimizing FX.
I am still on 0051 myself...and you can see what clocks I am running with PSC.

I'd start looking at if you got a bad kit or if you can tweak to make it work, I'm running custom drive strenth settings with this setup.

[tbone8ty]

what chips r the mushkins u think? r they good?

just weird cause i still have a G.skill sniper 2x4gb ddr3 1866 kit that did the timings in my profile fine ran OCCT all day.

maybe my IMC on the 1090t jsut cant go 2000mhz

ill have to look into custom drive strengths