IBT

paradisiac

paradisiac

paradisiac

Soldato
Joined
22 Mar 2009
Posts
7,754
Location
Cornwall
what settings do you need for intel burn test?

currently i have it on the one below maximum stress and 50 runs. is this too much or not enough.
also, what do the actual numbers it does for each cycle mean? is higher better?
 
i havent set it up as you described, just changed the drop down box to the one below maximum and set it to 50 runs. there are all 119.** Gflops and 64.***secs. all 4 cores are 100% and temp maxed at 78c but averages 72c.
 
i got slightly higher temps with IBT over prime, but the temps after about 30 run seem to of dropped down to the 60c's :confused:
not long now until its finished the 50 cycles, then i will try to do it the way you said, although im not sure 100% on everything (see parts in bold)

j.col said:
Wingzero30 will be along shortly, but here is some of his explanation.

to run ibt properly. close down ALL running programs inc. antivirus, internet, etc..

before running, open task manager and see the amount of 'free' ram under the performance tab.
for example i have 2550mb free ram so in IBT i enter a custom amount of 2500. (just below the free amount)
then i change the threads from auto to 4 (quad core), i have a quad core.
now every run i make i always get around 40-42 gflops. (consistent) (sorry glflops are a good indicator on how fast your cpu is running, i can get around 40gflops, but in a test if i was getting only 20 then the test is not running properly)

" I would choose 'free' memory as available memory will also make use of cache memory which must be storing data for other applications aswell. Windows may free up some physical memory from the cached memory during testing but not totally and i think the rest will be the virtual memory as a compensation.

Available = Free + (Cached - Modified)"

running just free memory will help you get higher gflops, as its just using free ram and not cached ram
this should also have 4 or 2 cores running at 100%"

this will give you more consistent gflops score, but will also make your temps higher, as more gflops, the more the cpu is stressed"

full details on running IBT properly http://www.overclock.net/intel-cpus/645392-how-run-linpack-stress-test-linx.html
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Click to expand...

* how do i disable MSE and the internet :confused:
* chose what :confused, i only have a drop down box for ram/stress
 
ok, will disable as much as possible, think i will have to kill MSE in task manager as i dont think it has an option to disable it. its pretty much passed 50 runs on my settings though, so is that a good indication it should be stable?
 
ok, your way seems to take 143.***secs and is 121.*** Gflops.

i did however get a BSOD so have upped the ram voltage and vcore. giving it another go.
 
joeyjojo said:
Wicked :cool:

Did you test with Prime? I wonder if it would have appeared stable...
Click to expand...

i did about 30 mins prime to check temps were ok.
IBT is def making the temps go higher than prime. on second run (with settings suggested and a bump in volts) temps are still good and its about 20 out of 35 cycles stable. hopefully will do all 35 without error.
if it does, will do a prime test tomorrow and then save settings and go for 4.8GHz+ ;)
 
WingZero30 said:
I hear you guys;):cool:

I don't need to add anything extra. You guys have become amazingly knowledgeable in the use of IBT:)

As stated above SB uses AVX instructions which double the flops from 4 flops to 8flops per cycle hence you can attain GFlops values in excess of 100.

IBT makes use of multi-add operations.
Click to expand...

so it does AVX automatically?

its on 33 of 35 runs, so if the last 2 are ok then im good :)
its remained constant time and Gflops so i assume all is as it should be.
 
IBT46GHz.png


35 runs without error :)
 
completed 50 runs of IBT @ 4.8GHz (1.39v) 131.***secs 124.*** Gflops Max temp 87c (but averaged 77c) which is lower temps than i was getting at 4.4GHz with my Freezer 7 Pro.
will slowly lower the vcore now, just whacked it to 1.39v to see if it would be enough and seems to be :) so now is the tweaking stage. will run it as is for now as i believe im still ok for 24/7 (although it only get a max 4 hours a day usage) vcore? see if i get any issues, if not then will attempt to lower it over the weekend.
 
j.col said:
well done mate, 50 runs and you are well stable. :)
Tbh i just do 25 runs and i have never had a bsod, but its personal preference.
Click to expand...

i did 50 on my 4.6GHz (before using correct settings) and it failed on run 48 so i will stick with 50 just incase, took around 2 hours so was a pretty good test and a lot quicker than prime.

joeyjojo said:
Yeh paradisiac that's sweet, 4.8! People are saying 1.4 V is OK, time will tell I suppose.

These chips really are immense. Your chip is doing 6 times the number of operations per second as my E7200 :o
Click to expand...

yeh can probs push for 5GHz @ 1.4-1.41v in bios, which will be 1.38-1.41v in windows. maybe even achieve it on less, but 4.8GHz is a pretty nice 'FREE' increase.
 
joeyjojo said:
Well it's not really free. Using the trusty OC calc at http://extreme.outervision.com/tools.jsp

3300, 1.21 = 95 W = £108/year
4800, 1.39 = 182 W = £207/year

at 13p/kWh, £100 a year more at full load 24/7.
Click to expand...

hmm........i see your point. but as my computer is on at max 4hours a day, and thats not every day, then the increase is probably here nor there.

although, going by that logic too, if i stuck on stock i wouldnt of need £47.99 worth of cooler either :(
 
so what exactly is a Gflop, and does it actually do anything in normal pc usage? as in, does having higher Gflops mean it can do stuff quicker?
 
so in real world terms, it makes no difference, but in stability testing it is one of the more complx tasks so should show issues quicker?
 
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