Overclocking 1055T on a 990FXA-UD5

[rooie]

Well, i give it up!

Has tried what could be tried for the last couple of days but i can not get an Prime stable overclock except 3500mhz.
It is my strong believe that there is still to do an lot of work by Gigabyte and that, like Asus,  the bios is NOT mature regarding the 990 chipset (AM3+).
Have to say that Gigabyte is better then Asus because i could do some overclock and Asus was clearly an disaster!

In my humble opinion there are two major problems:
The terrible, TERRIBLE vdroop and not like Ggabyte wrote me that it is because AM3+ specs, you can allways program the bios for every cpu seperately isn't it? Otherwhile Gigabyte has build an faulty board because it is also to be used with AM3 (without +) cpu's!
The cpu/memory/fsb divider stinks!!!! It's my believe that here lies one of the major problems.

[rooie]

Well, look here, from the Hardforum where apparently the official Asus reprensative is:

The AGESA code for the 9 series boards is designed with Bulldozer in mind, and does not suit older CPUs for outright overclocking. Thre is not much we can do about this, the timing offsets for signaling are completely different as AMD have optimised for Bulldozer.

http://hardforum.com/showthread.php?p=1037637183#post1037637183

If thats true then how on earth can sombody sell motherboards also for the AM3(not +) and other cpu's!!!!!
Guess it also is concerning Gigabyte?

[absic]

I guess this is part of the price we pay for backwards compatibility.

If it were a new Intel CPU coming along then we would all be complaining about the fact that we had to buy a new board just for a different socket.

[Lordred]

If thats true then how on earth can sombody sell motherboards also for the AM3(not +) and other cpu's!!!!!
Guess it also is concerning Gigabyte?

Its ok, the 9series chips are ment for Bulldozer I just was messing around with my 1100T till BD arrives. So far I've landed 4.4ghz as my absolute best, but keep in mind, unlike most Thubans, mine has a very low voltage requirement for stock (1.275v) which gives me huge headroom for overclocks.

Just wait for Zambezi, it should be worth it.

[rooie]

Well, the big word is out:

Dear Henk,

First of all sorry for the engineer sample processor, for it can unlock cpu core.
We just got a AMD processor 1055T (125W) with only X14 mulitplier and tested on our motherboard 990FXA-UD5 and Asus Crosshair V (990FXA) without any success on over clocking to 3900 FSB.
Therefore using this AMD processor Phenom II 1055T when set to 3900 will cause system unstable. This event not only on Gigabyte but other brand as well.
If you reach the CPU FSB to 3780 is good enough. on AMD 9xx platform.

Kind regards

GIGABYTE-Team

What does this means?
An 990 chipset can NOT overclock an 1055T as with an 890 chipset despite the promises made by AMD and other manufacturers!
Can somebody explain to me why they build an mobo which should b e capable to handle AM3 as wel as AM3+ processors if the AM3 apparently fails?
Yes, i know, it is not only Gigabyte but the other manufacturers as well! Have already returned an Asus Crosshair V to the shop because the lack of overclocking and especially the lack of support by Asus,.

[absic]

Hi again,

The AM3 processors are supported so no-one is making any false claims and they do work at their default settings.

However, you are talking about overclocking and sadly, although overclocking abilities are the main selling point with a lot of motherboards there is never any guarantee that it will work or be successful.

As has been repeatedly mentioned, the 9 Series boards are primarily designed for AM3+ processors with backwards compatibility for AM3, obviously this has a limitation when it comes to overclocking some processors.

[Lordred]

What does this means?
An 990 chipset can NOT overclock an 1055T as with an 890 chipset despite the promises made by AMD and other manufacturers!
Can somebody explain to me why they build an mobo which should b e capable to handle AM3 as wel as AM3+ processors if the AM3 apparently fails?
Yes, i know, it is not only Gigabyte but the other manufacturers as well! Have already returned an Asus Crosshair V to the shop because the lack of overclocking and especially the lack of support by Asus,.

Overclocking is an art form, you must poke and prod, observe and even LISTEN to your computer, it will tell you what will work, you need to listen for the VRM's, watch temps and voltages like a hawk. If you want 4ghz on a 1055T and you want it stable. Even on the 890FX you need to spend some time tweaking.

I accept your challange that the 990FX cannot push a 1055T to 4ghz, and then I prove it wrong.

Ambient temp 29C, air cooled 1.6v in bios (1.505 after drop) running near TJ max 61C. If I had my cpu under water this would be much easier.





Now if you will excause me, I need to spend an hour putting my 1100T back in.

[Lordred]

Have you had any more luck yet Rooie?

[rooie]

an core voltage of 1.632 IS insane, will not try and certainly even will not think about it!

[Lordred]

Idle voltage is not the issue, it is voltage under load.

[rooie]

Yep and an temperature which is rocketing to the sky!

Do not try to fool me, AMD and/or Asus and/or Gigabyte and/or .....has delivered an very bad design with the 990 chipset!
Would you buy an car with brakes wich wil not functioning? Guess not and the same is happening overhere, they promissed that it will work but in real it will NOT!
No excuses possilbe like AMD still has not produced the 'Bulldozer'; how on earth can somebody manufacture, sell and promise something when the main part is not there like for instance the cpu!

Guess who is paying the bill? Yep, the customer!!!!!!!!!!!!
The best example was the 790 chipset which was an disaster, no developer/manufacturere would take any responsebility for this and i foreseen the same happening with the 990 chipset.
Has seen this in my whole computer live: somebody develops something and the customer may test it in real  + pay the bill.

Yes, there are 6.918.000.000.000 guinea pigs out there.........

Ps:
please bear in mind the Gigabyte is the only one who has responded to my complaints and i thank them for their honesty!

[Lordred]

The 990 Chipset is doing exactly what it is designed for, be built for the AM3+ which is a die-shrink, it will use less power to do the same job.

The reason for most 790 chip failures was due to a lackluster VRM used by most AIB's however those who used at least an 8+1, those boards have been trouble free for a long time. One of the Greatest 790FX board was the MSI K9A2 Plat V2 which had the most PCI-E Slots of any board for its time, four PCI-E x16 slots which with all for used ran at x8/x8/x8/x8. Folders use this board to this day in 24/7 enviroments powering GPU farms.

You are being unreasonable, the AM3+ is designed for AM3+ CPU's first, with compatibility for AM3's. Have you tried disableing two cores on your Thuban?  It's looking like to me that the AM3+'s following AMD's specs may need considerably less power then the hungry Hexa AM3's as while using my 1100T as a quad core, I run into almost no Vdrop at all.

Yep and an temperature which is rocketing to the sky!

Actually using an air cooler (The Zalman 9900Max 135mm) I was able to keep my 1055T just below the TJ Max of 62C (Kept it at 61C) with an ambient temp of 29C. This was at the bios 1.6v which landed me at 1.505v under load. On top of that using both C1E, and AMD C&Q kept my idle voltage down to 1.3v when the CPU idled, the only time CPU-Z would report 1.6v with C1E and C&Q off, or during a power transition state when C1E and C&Q were both enabled.

Keep in mind it may simply be the fact that your 1055T was on the lower end of the BIN like mine was. As I told you my 1055T is a voltage HOG, needing to go over 1.4v just to get outside of  3.3ghz, while my 1100T is a very high BIN chip needing only 1.275v (1.22v on load on the UD5) to do 3.6ghz, 1.35v (1.28 load) for 3.8ghz, 1.4v (1.328 load) for 4ghz, then north of that to go higher.

The only thing I am wondering now, is are you setting the timing for your ram correctly, are you setting the multi's for you HT and NB down to accomidate for the higher FSB.  I do not know these things, as you have not shown us what setting you are using.

[rooie]

I suspect that you are paid by...... can not say that your comments are from an ordinary customer.....

[Dark Mantis]

I suspect that you are paid by...... can not say that your comments are from an ordinary customer.....

Just for the record I can assure you that none of us are paid by anybody involved with this forum or company and are all just unpaid volunteers and do it just for the joy!

[Lordred]

I suspect that you are paid by...... can not say that your comments are from an ordinary customer.....

With that I am done with you.

Good luck.