[Official] MSI 790FX-GD70 Owners Club - Page 322

Maybe his numlock is off! Who knows why that would matter? But, Hey Im up for any explanation as to why that happens. Maybe this board is telepathic like. "You can only overclock if you reeeeeeeeally want to!!!" Please don't feed me xD.

Question for you all:

I need to put a waterblock on my NB, with the two 4890's, RAM @ 1800Mhz and NB @ 2.7Ghz, it's idling between 58c-61c. Ambient is between 64-69f (16-19c). I already have the AMD stock cooler fan (for the 965) blowing directly on it, still 58-61c.

But, this board has an "all-in-one" heatsink cooler for the SB, NB and Mosfets. Here comes the question...

What options are available for handling this? I know what waterblock I'm (probably) going to use, but what do I do about the SB and Mosfets?

Hope someone has a solution for this, I haven't done a lot of research yet!

Marc
Edited by mduclow - 12/23/09 at 10:04am

I've pressed every button on my keyboard, and I couldn't get the thing to change.

you know what? overclocking is way over my head anyway. I'll just have to be content with stock values.

Honestly you picked a really advanced board to try to overclock on your 1st time around. I still dont have alot of the settings down, i know what they "might" do but i dont know what voltages and what combo of settings to use for certain stability like DDR-PHY and CPU-NB at what voltage makes the CPU-NB stable??????

that's just it, there are a lot of setting I shouldn't need to fiddle with, just a certain few. I know that if I crank up the FSB to 228 and leave the CPU at x17, I can get at least 3.8GHz~ out of it. Which means that if I nidge (that's less than a "nudge") the Core Multiplier to x17.5 I can achieve 3990MHz, Which is Just Perfect. The Problem is getting Windows to boot up. Say I did figure out how to change voltages. What would be the best choice?

The reason I ask here is because I'd really rather know from someone else who's done it successfully than try it myself and burn out the only CPU I've got. I'm on a really tight budget and can't afford another one.

The VID as it stands now is 1.4250v. How much do I need to step it up to keep it in sync with an FSB value of 228 and a Core Multiplier Value of x17.5? Are there any other settings I need to be aware of that might prohibit my ultimate goal, like Cool 'n Quiet or Spread Spectrum? Do I leave the HT-Link or whatever it is alone?
Edited by predcon - 12/23/09 at 1:30pm

I think the easiest way to get things figured out is to download AMD's overdrive program and fiddle with the settings there. Just be sure to make small adjustments , check for stability and watch your temps. Once you find a stable and thermally acceptable overclock with overdrive , you can put those settings in the bios . This board has up to 4 "presets" you can program into the bios for all your settings - darn handy!
Also there is a setting in bios that throttles back the FSB by 20 % until the os is fully initialised.
My 965 needs a minimum 1.488 volts to run @ 4 Ghz . Heat is a problem at that speed as i only have a stock HSF.
I have gotten it to 4.2 ghz using 1.52 volts but it was not even stable enough to validate on cpu-z
Good luck and have fun!

I wouldnt mess with the VIDs id mess with the straight voltages...Leave the HT-Link at 1800 to 2000, CnQ dosent matter but id turn it off till you have a steady clock its just easier. Spread Spectrum is for high FSB it regulates the frequencies make sure they dont fluctuate but ive never seen anyone really use it.

Try this guys.

How to overclock the Ph II's, quick and dirty guide:

On our board (790FX GD70), the first two voltage options should not go over the stock voltage for your chip and NB. For a C2 965 this would be 1.425 for the CPU and 1.3125 for the CPU-NB (the first two options). The second two (#3 & 4) are for adjusting above stock voltages. So if we say increase the CPU volts to 1.475, set the first to 1.425 (965 C2 chip), the second can stay on auto (not o/c'ing the NB in this example), the third to 1.475 and the forth to auto. Got it? If we say increase the CPU-NB volts to 1.35, then the first is auto, second 1.3125, third auto, and forth 1.35. Make sense?

Temps should never go over 62c (ultimately keep them under 55c under full load), CPU volts shouldn't go over 1.55v, CPU-NB 1.55v, and NB core 1.42v~. Temps can limit an overclock, as well as how many volts you can increase to.

When running a RAID array (any), or multiple disks, the SB volts like to be around 1.25v. Running multiple gpu's? Try increasing the NB PCI-e volts to 1.25-1.3v. Ram stable, but feels weak? Try adding in some CPU DDR PHY volts (Mastiffman taught us this one).

Isolate the components and test them individually. Start by lowering everything to stock, and run your RAM @ 1066 8-8-8-24 (underclocked). Unlock your cores (if a x2 or x3 you're unlocking), raise your CPU volts two 'clicks' (only if unlocking cores, otherwise leave on auto) and then run IntelBurn high pass for 20 runs (takes about 20mins). If it passes that, then you are about 95% sure it's stable, good enough for now.

Raise the speed a little, stress test it, if it fails, raise the volts 2 'clicks/notches', and stress test again. Repeat. Once you have the high clock for the CPU, go to the RAM, and work on that. Lower the CPU back to stock (unlocked) @ your stable voltages, etc... and work the RAM to where you want to go.

The best way I have found was to leave the timings on auto and work the speed (Mhz) up. Once you find the high clock for the RAM, then start lowering the timings slowly. Lower the timings by taking (for example) 8-8-8-24 down to 7-8-8-24, test, then 7-8-7-24, test, then 7-7-7-24, test, then 7-7-7-21. While testing you can do a quick IntelBurn, you can run 10 passes of it until you get to the high clock/low timings for it, then be sure to run 20 passes (I've had it pass 10, but fail 20, not yet stable).

After that, work on the NB in the same way as the CPU. The NB will add a lot of performance to the system and will greatly increase the Memory speeds and latencies. Clock it and test it as you did with the other components.

Once you know your high clocks for the CPU, RAM and NB, then you can set those settings and try running IntelBurn for 20 runs on high settings. The components may need some tweaking with voltages, etc... to all run together at their high clocks, but you should be pretty close with it at this point.

Pay special attention to the RAM when doing your overall system clock, it is usually the point of instability in a lot of systems that should otherwise be stable. Lower RAM speeds and tighter timings can work well for the AMD platforms.

Once you have the system passing IntelBurn high for 20 passes, then go ahead and run an overnight Prime95 Blend test. If this passes, then you are stable, and should be able to run anything you want at the set clocks.

Good luck, and be sure to stress test along the way, and then when you set all clocks, this last one is the most important.

Marc
Edited by mduclow - 12/25/09 at 7:47am

Hi all ive been watching this thread and had a go my self @ overclocking my set up!! this is where im @ and if i go above 4ghz even with more power it has none off it so it end of the road for me but im happy with it big rep for this form/thread its a wealth of info. ++++ to msi for 790fx its a great mobo one off the best ive ever had temps were 41max on cores while 100% load, N/B was 35max + its winter here in scotland and computer sits in the hall where its cold.http://valid.canardpc.com/show_oc.php?id=902780

Nice Guide MDUCLOW!!!!

Nice overclock Ricky! Looks good!

AND FINALLY!!!!!!!

Found out exactly WHAT causes the Hypertransport Sync Flood Error!!!!

It's the CPU itself. Which I guess makes complete Sense being that the HT is ON the Darn thing!

Anyway, Scenarios that Can produce the HT Sync Flood Error.

1. To high of an OC without the ample amount of CPU volts.
2. Plain, not enough CPU Volts at any speed.
3. Possible Bad power supply.
4. Motherboard with very high amount of VDroop which ultimately leads back to "Not Enough CPU Volts". This will reveal itself with a load on the CPU. Maybe not during typical use. Could just be that the motherboard has CPU power providing issues as well (Good power from PSU but motherboard wastes the power before reaching the CPU).


Hope that this helps someone out!