Linpack Challenge

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Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
I've never got a chance to run my 2500K using SSE2 (SP1 already installed), but according to this person,

LinpackAVX.png


The potential of AVX is huge. (70~80% real gain, 100% theoretical gain?)

http://www.xtremesystems.org/forums...rch-Question&p=4800356&viewfull=1#post4800356

AVX basically doubles the GFLops.

GFlopsvsGHz.png
 

lopri

Elite Member
Jul 27, 2002
13,310
687
126
I'm sorry but I'm not sure what I'm looking at. (especially those y and R² values) Is it frequency scaling?

The data above (post #224, 75% gain by AVX) was a sub-optimal run for AVX, I suppose?

Edit: Post #224, not 225. (47.4 GB/s to 83.9 GB/s by AVX)
 
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Idontcare

Elite Member
Oct 10, 1999
21,110
59
91
I'm sorry but I'm not sure what I'm looking at. (especially those y and R² values) Is it frequency scaling?

The data above (post #224, 75% gain by AVX) was a sub-optimal run for AVX, I suppose?

Edit: Post #224, not 225. (47.4 GB/s to 83.9 GB/s by AVX)

Sorry lopri, I didn't see your post/question before.

Yeah, that graph is frequency scaling but that wasn't why I added it. I was just pointing out how much GFlops you get at a given clockspeed for what is an "optimal" run with AVX.

I would assume that the lack of near-perfect doubling in post 224 for w/AVX and w/o AVX is because the w/AVX run was not done as optimally as the w/o AVX run had been done.
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
Temps are still below tjmax, but they are alittle high anyway. Should roughly be 10C lower.

What board do you have? Some autooverclocks the turbobins to max. Is your CPU running 3.6 or 3.8Ghz when doing Linpack?
 

Mir96TA

Golden Member
Oct 21, 2002
1,950
37
91
Temps are still below tjmax, but they are alittle high anyway. Should roughly be 10C lower.

What board do you have? Some autooverclocks the turbobins to max. Is your CPU running 3.6 or 3.8Ghz when doing Linpack?

No O.C what so ever! 100% stock
Cpu was running at 3.592 Ghz
i5-3570-LinX_zps1cf6e950.png

M.B is AsRock Z68 Extreme3
AsRockZ68Ex3_zps5c12235c.png

It has a stock Intel Fan
System is install in its Temp home which is Mini Tower with One Intake, one Exhaust with P/S sucking out from top.
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
No O.C what so ever! 100% stock
Cpu was running at 3.592 Ghz

M.B is AsRock Z68 Extreme3

It has a stock Intel Fan
System is install in its Temp home which is Mini Tower with One Intake, one Exhaust with P/S sucking out from top.

Mine peaks around 85C, stock as well. And 25-30C ambient. So eother your 3570K just gets hotter. Your case airflow aint really that good. Or ambient/mobo/gpu makes more heat inside?

Again tho, nothing is wrong. Linpack is about the most heat productive load you can do. So if it can handle Linpack, it can surely handle everything else.
 

Mir96TA

Golden Member
Oct 21, 2002
1,950
37
91
79C peak? Thats nothing! :)

I thought it was hot as hell for laptop with Sandybridge CPU! isn't it ?
and my ambient temps are 22-24.
Now with temporary house for my i5 also equipped with WD 1TB Black, That is also tend to run warmer.
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
I thought it was hot as hell for laptop with Sandybridge CPU! isn't it ?
and my ambient temps are 22-24.
Now with temporary house for my i5 also equipped with WD 1TB Black, That is also tend to run warmer.

Tjmax is 100C for your SB. And the manufactor might have gone for higher temps, but more silent. However in my views the temps are perfectly normal.
 
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