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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 480

post #4791 of 67351
@ os2wiz
This is the RAM. Its 2x2G

http://www.gskill.com/products.php?index=368
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post #4792 of 67351
Quote:
Originally Posted by Sazz View Post

I got similar result at 4.7Ghz, altho my clock set-up is x20 multiplier/235 FSB
My BIOS voltage is at 1.475v but after LLC it goes 1.5v under prime95, and prime95 fails randomly, sometimes just after 1hr and the longest run I had is just over 8 1/2hrs. I get that Illegal sumout error, dunno what that means. if it was something like "expected 0.2432534 time but got 0.34633434" error then I know its lacking on voltage. but that illegal sumout error seems to appear even on stock settings on some people which is pretty weird.

The illegal sumout is a computation error. It means one of the computation results didn't match the expected result. Kind of like if your CPU said 2+2 = 5 ... Except it relates to FFT and floating point operations. It's not a good thing and it points to some instability.

I don't get any failure at stock, did a 21 hour run yesterday on stock.
With OC it's much harder to get it to pass. Raising the CPU core voltage definitely helps. But of course that raises your temps too.
I have found that raising CPU-NB seems to help, but that may be because of my new DDR3-1866 RAM.
post #4793 of 67351
Just passed 24 hours of folding @ 3500mhz 1.175v (I did a ton of testing at 1.152 but my first run at folding resulted in the client crashing somewhere around 17 hours, so I bumped it up to 1.175 and now I think I can officially claim to be stable at sub 1.200v)
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post #4794 of 67351
Hi guys, first post, always wanted to post on here!

I'm an AMD guy since getting the 550PII that unlocked to a B50. I bought this current rig in anticipation for the 8150 but bought a 1090T like most people after reading the initial reviews. My 1090T never OC'd well and was quite boring after the excitement that was unlocking 2 cores. My B50 got to 4Ghz but the 1090 could barely get to 3.8 stable. So I bucked up and bought the 8350 not for gaming but for OC'ing.

Very happy so far, got it to 5ghz stable @ 1.52 volts with temps getting high but I didnt increase fan load. I think I can do 5.2 with a bench with some work. I think I'll be switching RAM soon, I bought the 1600mhz ram to underclock and run at lower latency for my PII but the performance dropped when I bumped it up to 1600 and high latency.

I don't think I'll run any higher than 4.4 24/7 with the H80 on low, there just isnt any reason to buy a bigger rad or run the little 80 on high.

Biggest beef so far? Planetside 2 hates us.
post #4795 of 67351
Regarding Prime95

I just want to chime in on the Prime95 debate. First, I'm not in favor of Prime95 or not, I typically use multiple stress tests to achieve my own "Stable" settings. While trying to see how far I could go with my stock VID of 1.35v, I let Prime95 run, while I peruse the forums. I saw someone mention in this thread, what was some of the differences between the tests.

Well, I'm not a code monkey, not a software engineer. However, I did find something interesting which might help dispell why Prime95 is failing while the other stress tests aren't.

Prime has always had 3 primary tests, Small FTT, Large FTT and Blend. Small utilizes almost no memory to stress the CPU, Large will use more memory, Blend is a combination of tests between the two.

Back in the Core2 days, I learn that you could be Prime95 SFTT stable, but would still fail immediately with Blend or LFTT. This is because the other two tests stress your memory and memory controller.

TESTING Methodology:

I use CPUID's Hardware Monitor to record my findings. In my chart below, I ran 4 Prime95 tests, at 4.8ghz and 4.0ghz. I also ran IBT to show the differences. The voltage that we are looking at is CPU/NB. This voltage is a good illustrator to show the difference between Prime95 and IBT. Each tests took at least 3 mins. or more. I also had to change the CPU/NB voltage from 1.3v to Auto in the BIOS.

Legend:
Top Graph - 4.8ghz
Bottom Graph - 4.0ghz
Value - CPU/NB voltage of when I took my screenshot
Min - Minimum CPU/NB voltage registered
Max - Maximum CPU/NB voltage recorded


You can see that at 4ghz, there was almost no voltage variations between all 4 tests.

At 4.8ghz, you can clearly see that Prime95 LFTT test has a much higher recorded max voltage. This means that at one point it took 1.29v to maintain the test, while all the other tests took no more than 1.277v.

It's almost a certainty that this would explain why Prime95 along with IBT or any Linpack testing will fail at the same voltages at the lower overclocks. Once you get to the higher overclocks, Prime95 will need more voltage than IBT.

Keep in mind this is just CPU/NB voltage, There may be a variety of other voltages that requires this higher voltage for Prime95 that is not monitor by any software available.
Edited by flyin15sec - 12/2/12 at 8:15pm
post #4796 of 67351
Hey everybody. I'm not an owner of one of these fancy cards, but I came to ask a stereotypical question:

I've been running an x6 1100t for quite a while and recently was lucky enough to get my hands on a Crosshair Formula-Z when my Sabertooth 990fx bit the dust. I've had this CPU for quite some time so I was considering an upgrade but through all the reviews and comparisons I've checked it doesn't seem like much of an upgrade into the FX series although not many tests compared the 1100t to the newer 8320/8350 processors. Would it be smart to upgrade now or should I hold off for something considerably better in the near-future?

My rig is pretty up to par so I suppose I'm in no means desperate for an upgrade but I've stuck with AMD for as long as I've set up my own builds so I was hoping someone would have some decent advice.
post #4797 of 67351
Quote:
Originally Posted by Schindlerian View Post

Hey everybody. I'm not an owner of one of these fancy cards, but I came to ask a stereotypical question:

I've been running an x6 1100t for quite a while and recently was lucky enough to get my hands on a Crosshair Formula-Z when my Sabertooth 990fx bit the dust. I've had this CPU for quite some time so I was considering an upgrade but through all the reviews and comparisons I've checked it doesn't seem like much of an upgrade into the FX series although not many tests compared the 1100t to the newer 8320/8350 processors. Would it be smart to upgrade now or should I hold off for something considerably better in the near-future?

My rig is pretty up to par so I suppose I'm in no means desperate for an upgrade but I've stuck with AMD for as long as I've set up my own builds so I was hoping someone would have some decent advice.

A question like this always feels like a setup, but WTH tongue.gif. As far as upgrading goes, it depends on how and what you use your machine for. Do you know of 3 benchmarks that would in part represent how you use your machine?
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post #4798 of 67351
I would of really liked a slightly better chip, but failing a legitimate reason to get an RMA I will have to live with it. TPF 1:32-1:33 project 8069 @ 4000mhz 1.376v

All system fans @ 1000rpm
Ambient 18.5c

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post #4799 of 67351
Hah! Sorry, I completely forgot to go into specifics. My computer as of right this moment is out of commission. I parted it out while waiting for a new PSU to arrive but I've generously upgraded a lot of pieces slowly since the summer with the intention of finally getting to experience some nice games as max settings/resolution. Unfortunately without everything up and running I can't/haven't ran any benchmarks in some time. Outside of the gaming aspect I do utilize many Adobe products for illustration and digital design but not in any extreme manner. And over the course of a few years I've amassed a fairly sizable collection of 1080p films/movies but that's not particularly important to me although considering my television is much worse than my Catleap, I tend to watch much more through the PC. So unfortunately that doesn't answer the question too well but I'm open to hearing whatever suggestion you may have in that respect.
post #4800 of 67351
Quote:
Originally Posted by flyin15sec View Post

Regarding Prime95
I just want to chime in on the Prime95 debate. First, I'm not in favor of Prime95 or not, I typically use multiple stress tests to achieve my own "Stable" settings. While trying to see how far I could go with my stock VID of 1.35v, I let Prime95 run, while I peruse the forums. I saw someone mention in this thread, what was some of the differences between the tests.
Well, I'm not a code monkey, not a software engineer. However, I did find something interesting which might help dispell why Prime95 is failing while the other stress tests aren't.
Prime has always had 3 primary tests, Small FTT, Large FTT and Blend. Small utilizes almost no memory to stress the CPU, Large will use more memory, Blend is a combination of tests between the two.
Back in the Core2 days, I learn that you could be Prime95 SFTT stable, but would still fail immediately with Blend or LFTT. This is because the other two tests stress your memory and memory controller.

TESTING Methodology:

I use CPUID's Hardware Monitor to record my findings. In my chart below, I ran 4 Prime95 tests, at 4.8ghz and 4.0ghz. I also ran IBT to show the differences. The voltage that we are looking at is CPU/NB. This voltage is a good illustrator to show the difference between Prime95 and IBT. Each tests took at least 3 mins. or more. I also had to change the CPU/NB voltage from 1.3v to Auto in the BIOS.
Legend:
Top Graph - 4.8ghz
Bottom Graph - 4.0ghz
Value - CPU/NB voltage of when I took my screenshot
Min - Minimum CPU/NB voltage registered
Max - Maximum CPU/NB voltage recorded

You can see that at 4ghz, there was almost no voltage variations between all 4 tests.
At 4.8ghz, you can clearly see that Prime95 LFTT test has a much higher recorded max voltage. This means that at one point it took 1.29v to maintain the test, while all the other tests took no more than 1.277v.
It's almost a certainty that this would explain why Prime95 along with IBT or any Linpack testing will fail at the same voltages at the lower overclocks. Once you get to the higher overclocks, Prime95 will need more voltage than IBT.
Keep in mind this is just CPU/NB voltage, There may be a variety of other voltages that requires this higher voltage for Prime95 that is not monitor by any software available.

which program did you use to check NB voltage? I use HWmonitor, if NB voltage is shown in HWM which one is it?
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FX-8350
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Phenom 1090T
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FX-8350 Gigabyte 990FXA-UD5 Sapphire HD7970 Corsair Vengance 
Hard DriveOptical DriveCoolingOS
Crucial M4 SSD 64Gb + Seagate Barracuda 1TB x2 Asus XSPC Rasa Block + Koolance VID-AR797 w/ XSPC EX... Windows7 64bit SP1 OEM 
MonitorKeyboardPowerCase
Acer 23" LCD Screen iRock backlit keyboard Seasonic X750 Corsair 500R (Modded) 
MouseAudio
A4 X7 Sony 50Watts 2.0 channel speaker + Sony Bluetoo... 
CPUMotherboardGraphicsRAM
AMD Phenom II x6 1090T Gigabyte 990FXA-UD3 Sapphire HD7970 Corsair Vengance 
Hard DriveOptical DriveCoolingOS
Crucial M4 SSD 64Gb + Seagate Barracuda 1TB x2 Asus XSPC Rasa Block + Koolance VID-AR797 w/ XSPC RS... Windows7 64bit SP1 OEM 
MonitorKeyboardPowerCase
Acer 23" LCD Screen iRock backlit keyboard Seasonic X750 Corsair 500R (Modded) 
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