FSX doesn't seem to like my new clock

[vgbaron]

[quote]Those of us who have owned off-shore yacht racers wouldn't call that thing of Nicks a yacht.

[NickN]

[quote]



But I LIKE "Gin palace"!!

[macca22au]

Ouch.   I presume the 8800 can be clocked so I can only hope that the tech can.

[NickN]

The magic in i7 is the communication rate between the memory and the CPU, and, the operations per clock as the CPU speed increases

When I posted I expected to see a 25-35% difference it was based on the 965 @ 3.2GHz. The 940 is based at 2.93GHz so although you will see a nice improvement which I do not doubt you wont see anything spectacular unless you clock that processor

Unlike the 965, the 940 is base multiplier locked. Changing the 965 base multipler is simple which is why they get top dollar for the proc. The 940 can be clocked assuming the motherboard allows Bclock access and access to Vcore and a few other voltages.

And I dont know what memory you purchased for this. The memory speed and timing will also have a defined effect on the result.

[NickN]

Vic

I just got word that BIOS 0801 has solved some of the memory chip noise issues and is much more stable than previous releases

Its in BETA and not available at the Asus site through normal means

It may be some weeks before it is released

Until I hear back from my Asus contact I am going to assume at this point the voltages I gave you for VTT and GTL is correct based on correct electronic enginnering formulas and the fact you are stable with those settings in everything and in testing..

[vgbaron]

Nick -

I'm running the 0801 beta BIOS - it was available on the ASUS forum. Made no change as far as the "stock" 450x9 setup I was trying. I'll try these settings and report back.

[NickN]

Not sure if what they are passing around is the latest beta of 801 or not.. but use it for now

[vgbaron]

Big improvement!

Flew FSX over 2 hours. Only anomaly was when nearing Las Vegas got an instantaneous black patch of terrain then all was well - nothing else unusual.

0801 beta Bios
450x9
no skew
pl7
2T
-40 GTL
+60 NBGTL
1.28750 Vcore
1.51106 PLL
1.28566 Vtt
1.55072 NB

Now going to try 1T

[vgbaron]

2 1/2 hours FSX with no problems!

Think I'll leave it this way and see what happens.

Fingers, eyes and toes crossed!

[NickN]

NICE CLOCK


Those voltage are right were I thought they should be...

I bet that BIOS was the key with a few minor voltage changes.. NB to 1.55 for one

CGTL NBGTL look right


Clocking the card is the same as clocking the CPU.. core less than 80c under full load without graphics errors ... memory you have to be a bit more careful because there is no monitor however I usually bring it up till I see errors with my core at least 20-30MHz less than what I know I can run it, then back the memory off 10 and raise core till I find the limit



Sorry about the holdup Vic but I think you probably would have been spinning your wheels on the 501 and 701 BIOS

[vgbaron]

No prob Nick. I agree and I spent the time reading a LOT of stuff on how the parts tie together. Can't say

[NickN]

ATI Tool v .26

SHOW 3D VIEW will stress the hell outta the core over time

as long as the 3D animation is showing.. it will heat the core up much hotter than FSX ever will

[T1MT1M]

[quote]
Nick I'll know tomorrow I hope how an i7 940 pairs up with an 8800GTX.

[NickN]

Hey Vic

Heard back from Asus

I was right. Its based on the formula and not the multiplier. They changed it from the original BIOS becasue they were aware of the stability problem and needed a way to fine tune the voltage over a slam multiplier which made it more difficult to deal with.

0801 is in fact the reason for your stability. They managed to find a set of variables that widened the window of stabilty without requiring skew however there are a few memory chips that still give it grief.. OCZ being the main problem child


FYI

in the future this is the formula for VTT (FSB Termination Voltage) and CPU GTL when the BIOS wants a setting in mv instead of the multiplier:

Its a simple algebraic problem

45nm CPU
Vtt x 0.667 + Y = Vtt x 0.635

65nm CPU
Vtt x 0.667 = Vtt x 0.635 + Y



NOTE: If its a 45nm CPU the answer will always be a NEGATIVE value, POSITIVE for 65nm

that is why yours is set to -40mv

I usually set the NB GTL mv between 60 and 70 and that would be POSITIVE so that is why yours is set to +60mv. If you see any instability, raise that to 65mv or 70mv and retest but I think you are probably set



The black square you saw has nothing to do with BIOS settings so dont mess with anything becasue of that... it would indicate a bit of saturation on the video buss

[vgbaron]

Ha! I figured you were right.  :) Could easily tell the 0801 BIOS was very different - everything came together as planned.

So far so good - I've noted a few anomalies but think they were due to my clocking the video card. After testing with ATI Tool, I've dropped it down considerably from where I had it originally.

Thanx for the formula - got it jotted down for future reference.

I don't normally fly FSX up at 30K but I am amazed at the clarity I'm getting. I don't pay attention to FPS but it is smooooooth!

BTW, if you ever get time to fly FSX for fun, there is a freeware a/c that is second to none. The SectionF8 F-86 Sabre (for FS9) - easily ported to FSX.