BIOSTAR 790GX thread

[Tomasis]

hello

well, here I have seen some users who use those motherboards. I own a Biostar mobo too. So I thought why not create a thread for biostar users and discuss about everything.

I had oc this for short time.. It is NOT 32m pi stable I need more time playing with timings.. but 3,7ghz seems to be prime 95 stable at 1,425v and I was able boot Windows at 1,4v. Then I tried above up to 1,55v and it didnt boot. I suspect my crappy PSU is the culprit because I did see that another user of same motherboard was able run at 1,55v hmm..

Specs: Phenom II 720BE, Biostar TA790GX 128mb, Club3D 4850, 2x2 Crucial PC8500 DDR2, unknown 460W , 5x500gb,

Post your images, comments or so

[hikaricloud]

I have the TA790GX 128M...this is my biggest OC on it so far:



My fastest PI time currently posted anywhere is:

[MrMojoZ]

Specs: Phenom II 720BE, Biostar TA790GX 128mb, Club3D 4850, 2x2 Crucial PC8500 DDR2, unknown 460W , 5x500gb,

Post your images, comments or so

Sure your not running out of power there on a no-name 460W?

[Tomasis]

hikaricloud, I must buy new PSU soon.. can your motherboard be prime95 stable at 1,55v or more? Interesting you have only 40 watt more than my psu but my 4850 and 5xhdd takes some loads of watts. :P

I forgot to add that I did tried to unlock x3 to x4 using modified Pcicriminal bios july15 but it didnt work..

anybody who unlocked cpu , can tell bios settings? Maybe I'd try raise volt 0,1 and try again at stock speed?

[Tomasis]

Sure your not running out of power there on a no-name 460W?

I said above that I'd need new psu :P I hope for a good cheap 750W PC&C, Corsair or whatever.. I need to hurry 4850 surprised me as powerhungry pig

[hikaricloud]

I've been prime stable at 1.55, but at 3.7ghz. It doesn't like 3.8 for some reason, but whatever.

Updated PI:



As for unlocking, I got it up to 4ghz, didn't try any higher. Just throttled the multi to 20, voltage to 1.55 and booted.



0904DPCW stepping by the way.

[Tomasis]

hikaricloud, can you tell me how did you unlock? What settings exactly?

You seem got a nice cpu 4cores 4ghz. even if it is unstable (isn't it?)

sub 17sec with 3 cores.. I will have the goal to work for :p

[Tomasis]

one thing: can you make time of superpi .. runing on 3750mhz?.. I want to see how much time one gains by increasing 250mhz.

what bios are you running?

[Friday~13rd]

x3 720BE @ 4Cores on TA790GX-128M

My 720BE is stable @3.5GHz : )




And maximum FSB

[hikaricloud]

hikaricloud, can you tell me how did you unlock? What settings exactly?

Turn the ACC to auto, that's pretty much it. The rest is whatever works for your chip. :P

You seem got a nice cpu 4cores 4ghz. even if it is unstable (isn't it?)

Nah, not stable. I didn't really test it out to see if it was...at the moment Vista is my 24/7 OS, Win7 is my benching OS. Whenever I unlock the 4th core, it freezes on booting Vista, but works fine in Win7, so I haven't bothered testing a stable clock.

sub 17sec with 3 cores.. I will have the goal to work for :p

Actually, I have an update:



My only problem now is temps.

You do know that SuperPI is single threaded, right? :P It doesn't matter if it has 2 cores, 4 cores, 8 cores, whatever. All that matters is the clock and cache on the chip.

EDIT:

one thing: can you make time of superpi .. runing on 3750mhz?.. I want to see how much time one gains by increasing 250mhz.

what bios are you running?

I can, but there are more variables than that. If I just throttle the FSB down, my NB/HT/RAM frequencies will go down too. I can show you one of my old scores...



Notice my HT is so low? I never messed with the NB, I was a bit more noobish back then.

I'll do up a 3.75ghz run though tomorrow if you like, trying to keep my same settings otherwise.

Also, I'm using the latest BIOS here: http://www.biostar.com.tw/app/en-us/...s.php?S_ID=377

EDITEDIT: By the way, this old time is when I was using my stock HSF.

[MrMojoZ]

I am trying to get a 955 working on a TA790GX A2+ but am stuck at 800mhz on all cores. Using current BIOS on Biostars site and I've already checked cnc and power mode in windows. Am I missing a setting in the BIOS?

[richierich]

I am trying to get a 955 working on a TA790GX A2+ but am stuck at 800mhz on all cores. Using current BIOS on Biostars site and I've already checked cnc and power mode in windows. Am I missing a setting in the BIOS?

Which BIOS version/date?

[hikaricloud]

I am trying to get a 955 working on a TA790GX A2+ but am stuck at 800mhz on all cores. Using current BIOS on Biostars site and I've already checked cnc and power mode in windows. Am I missing a setting in the BIOS?

Did you disable Cool n Quiet?

[MrMojoZ]

Which BIOS version/date?

78DBA525.BST

Did you disable Cool n Quiet?

Typo, cnc was supposed to be cnq. >< Makes no diffrence with it enabled or disbaled in the BIOS.

[Tomasis]

there is newer bios than may 25th.. try reset bios at first, load default, optimal, reflash bios or so.. check multipliers..

[Tomasis]

my computer has odd issue sometimes.. when I change something in bios and save then computer dont boot just fan rotates..so i had plug the cable out of psu and plug again in and worked like it didnt happened.. with 525 version the issue resolved then it came back with newer revision.. I must try new PSU and see what happens.

[MrMojoZ]

there is newer bios than may 25th.. try reset bios at first, load default, optimal, reflash bios or so.. check multipliers..

All thats been done, the power state is stuck in low mode and I'm not seeing anyway to break it out. The board won't post if I change it from the 1.0xx volt it is setting itself as and AOD can't change the voltage either.

[MacClipper]

BIOSTAR 790GX thread

I have the 790GX XE which is a great mATX mobo for its price esp. with the superb T-series BIOS (probably the best AMD BIOS around).


Pros
1. Does proper CnQ even when overclocking, with proper idle Vcore and multiplier drops (woohoo!)
2. ACC core unlocking with the very impt Downcore option
3. 10 named user CMOS saved banks (user interface can be improved here)
4. built-in memtest86+
5. stable USB boot option
6. very good Smartfan manual configuration alas only for the CPU
7. has mosfet sink mounting holes
8. onboard power/reset buttons and diagnostic LEDs

Cons
1. bare mosfets
2. budget build quality
3. downright plain stupid PCI-e card lock (!@#$), almost impossible to remove double slot video cards
4. tacky Lego colours
5. only 4 pin 12V plug


Come on Biostar, make and sell us a higher end T-series build and don't skimp too much on the parts. Now the T-series BIOS is like a Ferrari engine languishing in a Trabant body.

[Tomasis]

All thats been done, the power state is stuck in low mode and I'm not seeing anyway to break it out. The board won't post if I change it from the 1.0xx volt it is setting itself as and AOD can't change the voltage either.

have you tried the new bios? how did it OC work? you said, it doesnt work oc from aod, but how about bios? the same?

[Tomasis]

I have the 790GX XE which is a great mATX mobo for its price esp. with the superb T-series BIOS (probably the best AMD BIOS around).


Pros
1. Does proper CnQ even when overclocking, with proper idle Vcore and multiplier drops (woohoo!)
2. ACC core unlocking with the very impt Downcore option
3. 10 named user CMOS saved banks (user interface can be improved here)
4. built-in memtest86+
5. stable USB boot option
6. very good Smartfan manual configuration alas only for the CPU
7. has mosfet sink mounting holes
8. onboard power/reset buttons and diagnostic LEDs

Cons
1. bare mosfets
2. budget build quality
3. downright plain stupid PCI-e card lock (!@#$), almost impossible to remove double slot video cards
4. tacky Lego colours
5. only 4 pin 12V plug


Come on Biostar, make and sell us a higher end T-series build and don't skimp too much on the parts. Now the T-series BIOS is like a Ferrari engine languishing in a Trabant body.

I agree with that much Except colors. I love colors. Mango, banana, kiwi, apples

Bios amazed me. It reminds me somewhat of Abit :P Actually DDR3 version looks good. But why have two GX for my case. But if Biostar releases a Fx, it would be something.

[Tomasis]

Turn the ACC to auto, that's pretty much it. The rest is whatever works for your chip. :P

I'll do up a 3.75ghz run though tomorrow if you like, trying to keep my same settings otherwise.

changing multipliers is not enough?

let me know when you have time.. no hurry..

I tried ACC to auto, it doesnt work. maybe my cpu is dud

I want make comment about your HT. it is not necessary to have above 2200 for HT.. running between 2100-2200 HT is enough

check for perfomance numbers between higher and 2200. There is no difference. It has been talked in another thread some time ago.

[Oc-Ghost]

I am trying to get a 955 working on a TA790GX A2+ but am stuck at 800mhz on all cores. Using current BIOS on Biostars site and I've already checked cnc and power mode in windows. Am I missing a setting in the BIOS?

Only Biostar that supports and works with the 955 is the 790GX A3+ DRR3 version.

[hikaricloud]

I want make comment about your HT. it is not necessary to have above 2200 for HT.. running between 2100-2200 HT is enough

check for perfomance numbers between higher and 2200. There is no difference. It has been talked in another thread some time ago.

Yeah, well I've tried lowering the HT in hopes to make higher clocks easier to boot, or to raise the NB, with no luck. It seems every time I boot, it's with the HT on auto, which is weird. So I'd lower the HT if it helped me at all, it doesn't seem to whenever I try.

And changing multipliers is easy enough until you hit 4ghz, past that doesn't like me. But I get better times in PI if I use the FSB for a certain amount because it overclocks everything else, and since the BIOS only allows you to set the RAM at the regular numbers, that's really important to me.

I got my RAM to hit 1066 the other day, but it didn't really help me out at all. I was using the multi to overclock then, mostly, to keep my RAM stable. Times were terrible, and it didn't help that the default timings for my newfound 1066 RAM was 5-7-7-20, which killed any advantage I had, so I went back to my old settings.

[MrMojoZ]

have you tried the new bios? how did it OC work? you said, it doesnt work oc from aod, but how about bios? the same?

Last one I tried is dated 7/15. Any changes to the CPU done in the BIOS is a no post. AOD will let me change the multiplier and I can run stable at 2600mhz on 1.05v.

Only Biostar that supports and works with the 955 is the 790GX A3+ DRR3 version.

I am inclined to believe this. I have a MSI 790GX-C65 sitting here but I'm waiting for the low voltage OCZ DDR3 to come back in stock.

The funny thing is the 955 gimped at 2600mhz blows the 9500 at 2600mhz I was using away.

[cesariuth]

Hello...

this are my quick test:



3700 voltage stock



without Tweaks and without optimizer the RAMs

the Temperature are reely Suspects

whats is dangerous voltage?