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IBT vs Linx - Page 2

post #11 of 22
Quote:
Originally Posted by X-ray;13181841 
also do I need to set memory size to ALL?

That is correct. However, I would run it for ~30 seconds and then click "Stop". The reason is because some of your memory is being used for other things. If you're using 6GB total, you should be testing about 5GB.

Don't forget to incorporate the latest Linpack as it tends to add more stress with newer CPUs.

http://www.mediafire.com/?b9e4zg7yg0078o2
post #12 of 22
Quote:
Originally Posted by X-ray View Post
also do I need to set memory size to ALL?
Yeah. Try and put as much stress as possible and watch the temps!
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post #13 of 22
Thread Starter 
getting 85C with 1.35Vcore, they seem high to me with my Noctua cooler, I just have 2 case fans (the ones that came with HAF 912) mind you, but i don't think that's the issue hear. I think it's the thermal paste, I already resitted the cooler yesterday. So I am lost here, I was hoping they would be much lower, but alas. What's wrong with my setup? I can take picture of my case if needed. Thanks for your help. Peace.


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post #14 of 22
I see one difference between Linx and IBT, Linx auto settings correctly sets threads to 8 with i7 and HT on. IBT auto thread settings runs with 4 threads and doesn't really stress cpu since it's only running at 50 % load. To stress test a cpu with HT using IBT threads should always be set manually.
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post #15 of 22
running on max is not the right way to run IBT as you are using cached memory, therfore reducing gflops.

using the standard, high or maximum tests i was getting anything from 25 gflops to 42 gflops (unconsistent)

you have to run ibt properly
before running, open task manager and see the amount of free ram.
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)
now every run i make i always get around 40-42 gflops. (consistent)

" 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.

The following is the estimated GIGAFLOPS for a few chips:

E5200 @ 3 GHz 19-20 GIGAFLOPS
E8400 @ 3 GHz 21-22 GIGAFLOPS
E9550 @ 4 GHz 54-56 GIGAFLOPS

I5 quadcore @ 4 GHz 59-61 GIGAFLOPS
I7 quadcore @ 4 GHz 60-62 GIGAFLOPS
Gulftown 6core @ 4 GHz 90-93 GIGAFLOP

full details on running IBT properly http://www.overclock.net/intel-cpus/...test-linx.html

edit. linx and IBT are the same.
also afaik OCCT cpu linpack test is the same as well
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post #16 of 22
Quote:
Originally Posted by X-ray View Post
getting 85C with 1.35Vcore, they seem high to me with my Noctua cooler, I just have 2 case fans (the ones that came with HAF 912) mind you, but i don't think that's the issue hear. I think it's the thermal paste, I already resitted the cooler yesterday. So I am lost here, I was hoping they would be much lower, but alas. What's wrong with my setup? I can take picture of my case if needed. Thanks for your help. Peace.

how are you applying the paste eg. grain of rice size, pea size etc...
when you resat it yesterday, what did the old paste look like, was the cpu completely or partially covered?
what paste you using?

also going my my post above, your gflops should be around 60ish gflops.
you are only getting 49gflops, so you are not running the test properly.
however, if you were at 60 gflops your temps would be higher, so i wouldn't worry about that until you get your temps down
Edited by j.col - 4/19/11 at 1:35pm
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post #17 of 22
Quote:
Originally Posted by j.col View Post
how are you applying the paste eg. grain of rice size, pea size etc...
when you resat it yesterday, what did the old paste look like, was the cpu completely or partially covered?
what paste you using?

also going my my post above, your gflops should be around 60ish gflops.
you are only getting 49gflops, so you are not running the test properly.
however, if you were at 60 gflops your temps would be higher, so i wouldn't worry about that until you get your temps down
49GFlops are correct for an i7 with HT Enabled.

As for temps, they seem about right for that Vcore at load.
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post #18 of 22
Thread Starter 
Quote:
Originally Posted by j.col View Post
how are you applying the paste eg. grain of rice size, pea size etc...
when you resat it yesterday, what did the old paste look like, was the cpu completely or partially covered?
what paste you using?

also going my my post above, your gflops should be around 60ish gflops.
you are only getting 49gflops, so you are not running the test properly.
however, if you were at 60 gflops your temps would be higher, so i wouldn't worry about that until you get your temps down
The first time I applied about grain of rice size, and that didn't cover the whole surface. The second time I used just a bit more than the first time, but the temps didn't change, I didn't notice any difference. I am using the Noctua paste. I have some old OCZ paste, maybe I should try it too, but I was told Noctua was dissent.
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post #19 of 22
Just to get it out there, those temps are REALLY extreme and worst case scenarios, nothing you do every day will stress your CPU to these limits so if you get high temps with these kind of tests I wouldn't worry too much even tho 85 degrees is a bit too much for my liking. For example I had peak of 70 degrees in IBT with my OC and everyday use I usually never go above 55.
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post #20 of 22
Their both crap and do nothing but heat up CPU's to unrealistic levels. They are useless for finding unstable overclocks. I've finally quit using IBT/LinX.

Prime95 small FFT's, Blend and Large FFT's are the way to go.
    
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