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Justin.Kerr - 980X Low GFlops

Post Date: 2010-09-28
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Topic: Justin.Kerr - 980X Low GFlops
    Posted: 28 Sep 2010 at 8:20pm
I am a bit confused by LinX...   Before attempting 4.7GHz I was getting 105GFlops on the old linpack binaries at 4.4GHz.  I saved those settings and after giving up on 4.7 for this chip I loaded those settings back and was now getting 43GFlops.
 
Upgraded the linpack binaries as suggested and currently getting 70GFlops @ 4.4GHz which is better, though that seems quite low compared to most.
 
Any Ideas?
 
 
Screenshot:
 
 
 


Edited by venom - 28 Sep 2010 at 8:36pm
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 8:27pm

RAM speed/timings   uncore 1.5x or 2x?

QPI is very low, that will help some to raise that.
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 8:37pm
QPI is at 6.4GT/s unless you are referring to the bclock.  Uncore currently is 1.5x, RAM speed is 1600MHz, timings are 9-9-9-24 2T.
 
Trying with 2x uncore now.
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 8:41pm
QPI 3204, bump it up Big%20Smile

Edited by justin.kerr - 28 Sep 2010 at 8:44pm
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 9:09pm
2x Uncore got me 80GFlops, though I am unable to POST above 4000MHz QPI Disappointed.  Trying to raise bclock now.
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 9:12pm

lol yeah QPI speed is touchy most will do 3600 easy, 3800 is good, and over 4000 is pretty tough,  if you keep voltages inline.
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 9:16pm
Back to 48GFlops with 193blclock, argh.  I'll keep trying more tomorrow, thanks for the help.
 
Yea I remember trying to compete in EVGAs crazy QPI contest, and finally figuring out that the PCIE clock was key to getting over 4GHz, though by that time the contest was over lol.


Edited by venom - 28 Sep 2010 at 9:17pm
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 28 Sep 2010 at 9:18pm
yep I run my PCIe at 116Mhz Big%20Smile
I
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 29 Sep 2010 at 3:03pm
How do you keep Network and SATA from dropping out past ~110MHz PCIE?
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 29 Sep 2010 at 3:33pm
some work till 122Mhz-126Mhz Big%20Smile
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 29 Sep 2010 at 4:01pm
I see, must have just had a crappy board.
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Posts: 2247 		  Quote Dragoonseal Quote  Post ReplyReply bullet Posted: 29 Sep 2010 at 4:06pm
Originally posted by venom

How do you keep Network and SATA from dropping out past ~110MHz PCIE?

Bit o luck, I suppose. Plus I'm sure some boards handle it better than others.

I run Lilim at 120MHz with no issues. Good ol little Micro board. Hahaha
Lilim
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 5:22pm
Bah these chips are picky.  Currently on an EVGA Classified motherboard and any uncore past 1.5x gets stuck on POST Code 25.  Any ideas on what to do to get past that?
 
Or maybe i'll just go back to the Rampage III...
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 5:29pm

RE III, I like better, but still Classy will do it.Big%20Smile

post up BIOS settings.
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 6:48pm
With Vdroop
Vcore: 1.4375v
VTT: +75mv
DIMM: 1.65v

CPU Multiplier: 27x
Bclock: 157
Uncore: 18x

Memory Ratio: 2:12
Timings: 9-9-9-24-2T

SpeedStep: Disabled
CxE: Disabled
Virtualization: Disabled
Execute Disable Bit: Disabled
QPI Frequency: 4.8000GT/s

(If it's not listed above it is set to Auto or the default setting.)

Tried increasing to 19x uncore and it freezes on POST Code 25.  Tried 24x, same thing.  Tried increasing VTT, IOH, no different.  Also interesting was that selecting the 2:14 Memory Ratio, setting DIMM voltage/timings with everything else stock/auto, it would freeze on 25. 

Already tried another motherboard, same issues occurred.
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 6:54pm
what BIOS?
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 6:57pm
RAM is Oced a lot? might be problem.
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 7:01pm
RAM is 1866MHz, BIOS is the latest, 74.

RAM is overclocked ~18MHz.


Edited by venom - 06 Oct 2010 at 7:02pm
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justin.kerr View Drop Down
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 7:05pm
ohh. lol though it was 1600Mghz RAM.
how high have you had VTT ? +.250?
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 7:22pm
I think +200mv was the highest.
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 7:27pm
+.250 is needed if the IMC is  weak.
QPI PLL 1.25-1.3
IOH 1.25-1.3
VTT PWM 370Mhz
PCIE  105Mhz-107Mhz
MCH strap 1867Mhz
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 7:38pm
here is my newest 24/7 overclock.
by looking at the QPI link, and NB freq, you can extrapolate the multi's, and the basic RAM settings, and voltages.
 
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 06 Oct 2010 at 8:39pm
Alright, I will try those settings tomorrow.  Thanks again.

Damn, 2000MHz @ 7-7-6, that is crazy...
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Alex View Drop Down
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Posts: 16314 		  Quote Alex Quote  Post ReplyReply bullet Posted: 07 Oct 2010 at 9:31pm
@justin.kerr,

What are your temps? We'll try it on our new system and compare.
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 08 Oct 2010 at 6:39pm
I am now convinced EVGA has a bug in their BIOS.  There is no way an increase in 1x on the uncore (18x->19x) would cause freezing on post when @ 18x it is LinX stable 5x pass.  I tried multiple RAM/Uncore ratios, and each time once it is over 1.5x ram ratio, it doesn't post. 
 
I tried VTT up to 300mv, IOH 1.3v, QPI 1.3v, and I even changed CPUs, no difference.
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Posts: 4219 		  Quote !ender_ Quote  Post ReplyReply bullet Posted: 08 Oct 2010 at 8:13pm
with more than one mobo?
 
just wondering bc i definitely found that if my qpi is over my vcore i cant get stable oc's either... wierd little bug
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 09 Oct 2010 at 4:54pm
QPI over V core has nothing to do with stability, not how it works.
The 980x has had a lot of BIOS bugs with Evga boards, no question about it. takes time to get it to work, and some bugs will flat not allow it to work..
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Posts: 4219 		  Quote !ender_ Quote  Post ReplyReply bullet Posted: 09 Oct 2010 at 7:50pm
if my qpi is higher than my vcore, i dont test stable
 
i know its not supposed to matter, which is why i said it is "wierd" as you can see up there in my post
 
its just like baseclock holes, there are all kinds of quirks to different systems... i dont have to tell you that
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 11 Oct 2010 at 1:37pm
Yea, already tried another motherboard, same result.  Guess I'll switch back to the Rampage III or wait for the Classified3.

Thanks for the help.
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 13 Oct 2010 at 2:10am
Now on a Rampage III.  I must say, ASUS did a great job with this board, minus the weird heatsinks.  Uncore is now able to be moved past 1.5x with ease, stable voltage, more accurate bios volt readings, more volt control, no post code led but the 4 indicator leds make up for that, easy multimeter points, on/off switches for pci-e lanes, the list goes on. :D

Edited by venom - 13 Oct 2010 at 2:21am
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Posts: 5084 		  Quote justin.kerr Quote  Post ReplyReply bullet Posted: 13 Oct 2010 at 9:03am

The classy has easy multi meter points, and PCIe on/off to. Big%20Smile

But overall the RE III is a better board,  for the 980x  Heat sinks? put it on waterHahaha
The fine tuning on the voltages is a very nice feature.
 
how is the Gflops with the RE III?
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venom View Drop Down
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Posts: 0 		  Quote venom Quote  Post ReplyReply bullet Posted: 15 Oct 2010 at 5:11pm
At 4.6GHz with a 3.3GHz Uncore I was getting around 91GFlops.  At 1.5x Uncore (~2.8GHz) I am getting ~80GFlops. 


Edited by venom - 15 Oct 2010 at 5:12pm
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