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FX 8350 owner pls. come in

AtaRo

AtaRo

AtaRo

Associate
Joined
4 Aug 2008
Posts
2,111
I'm interested to know if the boards listed below throttles if used with the FX 8350 when overclock.

Any FX 8350 owner with the listed board below I would like to ask if you could run a simple test if the board will throttle when loaded with Prime95 Small FFT.
If you got a board not listed below and would like to share your result pls. feel free to do so, the more the better.

Program needed to run,

Coretemp
CpuZ
Prime95

Pls. post a screenshot of cpuz or coretemp just to show what overclock or speed your chip is running and if your motherboard is throttling after xx minutes.

Asus M5A99x Evo - Does not throttle see Post 6
Asus Crosshair V Formula-Z - I dont't expect this board to throttle though as this is an Asus premium ROG board. Post 18 Post 19
ASUS SABERTOOTH 990FX R2.0 - Post 21

ASRock 990FX Extreme4 - ? unknown

ASRock 990FX Extreme3 - Throttles as reported in this thread http://forums.overclockers.co.uk/showthread.php?t=18495319&highlight=throttle

Gigabyte 990FXA-UD5 - ?

Gigabyte 990FXA-UD3 - ?

Gigabyte 990FXA-D3 - VRM no HS and 4+1 only so I presume this board will throttle too with 8350

Gigabyte 990XA-UD3 - Throttles as can be seen from the video below.I tested this in an open case with lots of airflow around the VRM area.


Thanks

 
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I have a 8350 and asrock extreme4. I haven't overclocked it at all yet, but am up for a fat overclock.

Ill give it a go tonight.
 
HecFam said:
I have a 8350 and asrock extreme4. I haven't overclocked it at all yet, but am up for a fat overclock.

Ill give it a go tonight.
Click to expand...

Hey thanks, at first I want to get the asrock extreme4 too but decided to try the Gigabyte 990XA-UD3 as it got a better VRM 8+2 and a lot cheaper too but I think now that its a mistake getting this board but at least we know now that this board is pants in overclocking the 8350.
 
I have the Asus M5A99x Evo with a solid prime stable 4.7GHz OC on air. I have tested IBT very high at 4.8GHz (10 runs) and will run most benchmarks, cinebench, x264HD at 5Ghz although not prime stable. It is Aida64 stable at 5GHz on eight cores.

The IBT runs were done at 302Mhz busclock and 16x multiplier all others ~233Mhz bus and varying multipliers.

Memory is at 2000Mhz approx.

A good board for the FX8350 at about £100, 6 + 2 power phase

IBT


4.9GHz prime on four workers


4.6GHz on prime eight workers (currently 4.7GHz but no screenies).


x264HD at 5GHz


Luxmark at 5Ghz


Cinebench at 5GHz
 
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nkata said:
I have the Asus M5A99x Evo with a solid prime stable 4.7GHz OC on air. I have tested IBT very high at 4.8GHz (10 runs) and will run most benchmarks, cinebench, x264HD at 5Ghz although not prime stable. It is Aida64 stable at 5GHz on eight cores.
Click to expand...

Thanks, I have added your board to the list.
 
I have seen it happen on my Crosshair Formula-Z so no motherboard is immune, IBT is a poor test for AMD FX, Prime95 large fft (note: not blend) sends temps through the stratosphere especially if you up the volts.

You either need awesome cooling or ignore Prime95. Or better still buy Intel as they don't ship processors with a 62C temp limit that are almost hitting it at stock under Prime95 with a high end cooler - can these processors even Prime with the stock cooler?
 
AtaRo said:
Hey thanks, at first I want to get the asrock extreme4 too but decided to try the Gigabyte 990XA-UD3 as it got a better VRM 8+2 and a lot cheaper too but I think now that its a mistake getting this board but at least we know now that this board is pants in overclocking the 8350.
Click to expand...

What made you get the GB ?
Did you not see the videos of the VRM's catching fire ?

GB put nanny settings in the BIOS to avoid this issue and that is why they are throttle happy.

Get a Sabertooth.
 
My Sabertooth fx990 r2.0 does not throttle spite very high vrm temps(75+ degrees due to extreme llc). A simple fan over the headsinks and the vrms drops 25 degrees easily
 
Davedree said:
provide a link, guessing it was a am3+ 4+1 board.
Click to expand...

Actually no it was the X79 range.
The most watched video is a UD3 catching fire,

Anyhow the VRM design is common across the GB range.
X79 990FX etc.

GB are now making a big deal of the new VRM/choke design on there latest boards because they got such a bad rep.
 
ok with the 990fxa ud3, I know there is a bug issue with rev 3:0
where you have to turn off hpc mode, overclock your cpu settings save,
reload windows and once loaded, restart windows back into bios and turn hpc on then back into windows this stops the throttling on rev 3:0

So any time you change a setting in the bios turn hpc mode off. change setting and boot. then restart and turn hpc mode on.

With your 990xa ud3 what are your current bios settings and do you have amd apm disabled
Also what are your tmp2 temps and your core and cpu temps
 
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The following settings are disabled in the BIOS.
I could not find HPC in the BIOS setting.

It could be the throttling is caused by the VRM protection that Gigabyte added starting with BIOS F11 also as stated by PCZ.


Turbo/CPB
CnQ
AMD C1E
APM
AMD C6
 
mmj_uk said:
I have seen it happen on my Crosshair Formula-Z so no motherboard is immune, IBT is a poor test for AMD FX, Prime95 large fft (note: not blend) sends temps through the stratosphere especially if you up the volts.

You either need awesome cooling or ignore Prime95. Or better still buy Intel as they don't ship processors with a 62C temp limit that are almost hitting it at stock under Prime95 with a high end cooler - can these processors even Prime with the stock cooler?
Click to expand...

I have the Formula Z too, although saw no throttling. I believe if you got throttling on your formula Z, it was probably due to CPU temperatures since the motherboard has extremely solid MOFSET's. The OP's throttling is more likely his VRM's since his CPU temps are fine but to be fair it was at 1.488V.

Here are my figures with my different motherboards i have owned, all with an 8350:

Crosshair Formula-Z (just CPU on custom loop)
VRM Temps:77C
Clock: 4.8GHz on 1.46V
(prime stable for an hour+) No throttling

Crosshair Formula-Z (Full board and CPU cooling)
VRM Temps:30C
Clock: 5.3Ghz on 1.52V (10 mins stable only) my 24/7 clock is 4.9Ghz No throttling

M5A78L-M/USB3
VRMs had no heatsink
VRM throttling with any voltage over 1.35 (ran only at stock, couldn't overclock without voltage instability where vcore would jump up and down)


On a different note, i did have an 8150 and did a number of overclock tests on a few boards and found that i had one of the craziest CPU's around! The M5A78L-M/USB3 had such mental Vdroop that my chip voltage was super low the first time i set it manually and as i upped the clock bit by bit, i found that i still got no blue screens or errors untill about 4.8GHz. Thank god the chip was stable at low voltages because the boards VRM's cant take much due to lack of heatsink and the VRM's being of the low end of Asus' range. Here is a screen!

525810_10151276103918072_1798063239_n.jpg

Funny thing is i couldn't get the same settings to work on my formula-Z, i got a bit higher with a bit more voltage and more of a multiplier clock but it didn't perform on par to my 8350 24/7 clock on benchmarks.
 
fx8350 with asus crosshair v formula z here at 4.8ghz.
Not experienced throttling at all when on load from prime 95
 
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