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post #31 of 128
Quote:
Originally Posted by HSG502 View Post
I see. In that case, when overclocked I only get 72% of stock GFlops. What is wrong here?
I don't know. I just ran it in Safe Mode (blind on the temperature side of things) and I'm getting 29.1GFlops.
Would really like an answer.
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post #32 of 128
Thread Starter 
@ liberalelephant
You are doing everything correctly.The culprit is the amount of ram selected(3072 MB).Obviously windows is not giving the test this much physical memory.so:
-Reboot
-perform all the needed steps(you already know what to do).
-open task manager.Check free memory.Now open LinX.The reported value of physical memory is higher.this is the problem.Set memory to use to the amount reported by LinX.You may get an error & LinX lowers the ram amount a bit.Accept this value & hit start while watchingthe telltale taskmanager.Stop the test after 20 secs & close LinX.You may need to repeat this step a few times untill you get the desired result.
-Start Linx & set memory to a value between 2400-3072.I use 2560.
-If after the 2nd pass your GIGAFLOPS is much less than you expect,stop the test & repeat the previous step.

Like I have said before,a proper test with 2400 MB is much more useful than an improper test with 3072 MB.

@ [Adz]
Note that 54 GHz is the upper limit for your oc.This will never happen in practice.I estimate @ 3.375 GHz you should get 44-46 GIGAFLOPS.
Also read my answer to liberalelephant in this very post!

@ HSG502
I estimate @ 2.76GHz you should get 35-37 GIGAFLOPS.
Also read my answer to liberalelephant & [Adz] in this very post!
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post #33 of 128
Quote:
Originally Posted by PERSPOLIS View Post
@ liberalelephant
You are doing everything correctly.The culprit is the amount of ram selected(3072 MB).Obviously windows is not giving the test this much physical memory.so:
-Reboot
-perform all the needed steps(you already know what to do).
-open task manager.Check free memory.Now open LinX.The reported value of physical memory is higher.this is the problem.Set memory to use to the amount reported by LinX.You may get an error & LinX lowers the ram amount a bit.Accept this value & hit start while watchingthe telltale taskmanager.Stop the test after 20 secs & close LinX.You may need to repeat this step a few times untill you get the desired result.
-Start Linx & set memory to a value between 2400-3072.I use 2560.
-If after the 2nd pass your GIGAFLOPS is much less than you expect,stop the test & repeat the previous step.

Like I have said before,a proper test with 2400 MB is much more useful than an improper test with 3072 MB.

@ [Adz]
Note that 54 GHz is the upper limit for your oc.This will never happen in practice.I estimate @ 3.375 GHz you should get 44-46 GIGAFLOPS.
Also read my answer to liberalelephant in this very post!

@ HSG502
I estimate @ 2.76GHz you should get 35-37 GIGAFLOPS.
Also read my answer to liberalelephant & [Adz] in this very post!
Ok thank you! I will try this again when I have the time to run another burn test, but I may OC a bit more first.
     
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post #34 of 128
Quote:
Originally Posted by PERSPOLIS View Post
@ liberalelephant
You are doing everything correctly.The culprit is the amount of ram selected(3072 MB).Obviously windows is not giving the test this much physical memory.so:
-Reboot
-perform all the needed steps(you already know what to do).
-open task manager.Check free memory.Now open LinX.The reported value of physical memory is higher.this is the problem.Set memory to use to the amount reported by LinX.You may get an error & LinX lowers the ram amount a bit.Accept this value & hit start while watchingthe telltale taskmanager.Stop the test after 20 secs & close LinX.You may need to repeat this step a few times untill you get the desired result.
-Start Linx & set memory to a value between 2400-3072.I use 2560.
-If after the 2nd pass your GIGAFLOPS is much less than you expect,stop the test & repeat the previous step.

Like I have said before,a proper test with 2400 MB is much more useful than an improper test with 3072 MB.
Thanks! I have noticed I get 2-3 GFLops more with the 2400mb ram setting but I still am getting a bit below what I should be getting. Also I have disabled my virtual memory. Should I re-enable it?
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post #35 of 128
Quote:
Originally Posted by PERSPOLIS View Post
@ [Adz]
Note that 54 GHz is the upper limit for your oc.This will never happen in practice.I estimate @ 3.375 GHz you should get 44-46 GIGAFLOPS.
Also read my answer to liberalelephant in this very post!
Take a look for yourself. Page file is disabled and I'm well clear on how much RAM I'm using. Both screenshots were in safe mode, so there's no unnecessary processes/services running.

Stock:


Overclocked:


Is that reason enough for an RMA, or is there something I'm missing here?
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post #36 of 128
Thread Starter 
@ liberalelephant
I always keep virtual memory enabled.
BTW,have you tried to disable Ht(temporarily) as suggested by another member,just to check?

@ [Adz]
Please do the following:
-Enable page file.
-Use LinX(preferably version 0.6.0)
-Make sure there is no app using CPU cycles.What is your CPU usage @ idle?
-run the test both in safe mode & otherwise.Dont run task manager during the test.
-run only LinX & Realtemp(or Coretemp) in windows & keep an eye on your temps.We want to make sure no throttling is happening.Also,run LinX+Hwmonitor(or Everest) & check your cpu temp(tcase).
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post #37 of 128
[QUOTE=PERSPOLIS;8431342]@ liberalelephant
I always keep virtual memory enabled.
BTW,have you tried to disable Ht(temporarily) as suggested by another member,just to check?

I disabled my page file and my tests so far have been consistently in the upper end of my previous range (50-53 GFlops). I need to do some more testing to see if it wasn't just I was using less RAM....

When I tested w/o HT @ 4.5GHz I only got around 50GLops....which I should have gotten 60+ so I still think something is wrong....

LinX is a pain in the ass.
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post #38 of 128
Quote:
Originally Posted by PERSPOLIS View Post

@ [Adz]
Please do the following:
-Enable page file.
-Use LinX(preferably version 0.6.0)
-Make sure there is no app using CPU cycles.What is your CPU usage @ idle?
-run the test both in safe mode & otherwise.Dont run task manager during the test.
-run only LinX & Realtemp(or Coretemp) in windows & keep an eye on your temps.We want to make sure no throttling is happening.Also,run LinX+Hwmonitor(or Everest) & check your cpu temp(tcase).

- Enabled page file. Rebooted twice.
- Ran using LinX 0.6.4. Memory (MiB): 2800. Problem size: 19105.
- CPU Usage stays at 0% with the occasional rise up to 2%.
- Closed task manager prior to running the test
- Only active programs: Real Temp 3.40, LinX 0.6.4
- Real Temp Minimum: 31C (lowest core), 40C (highest)
- Real Temp Maximum: 59C (lowest core), 65C (highest)
- Running CPU-Z while running LinX shows no decrease in core speed or core voltage (except the 0.08v vDroop).
- Disabled throttling in BIOS

Peak Speeds
Normal Windows: Peak 30.83 GFlops
Safemode: 31.54 GFlops
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post #39 of 128
I'm going to bump this to see if there's anyone with any new ideas.
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post #40 of 128
Hi PERSPOLIS, can you give me some advice if you don't mind. A few months ago when I built my new pc, I did an overclock for the first time and got it up to 4.11GHz. I've just flashed my bios today which reset all the settings, so I need to do the oc again, but I can remember what all the settings were. However, last time I just used prime95 but this time, I'd like to use linx to give me more peace of mind that I'm stable.

So most of your guide is excellent, and thanks for taking the time to create it. I understand most of it about not running apps, leaving 10 mins, checking free ram, etc, but I'm confused about one thing, what value of gigaflops I should be expecting to see in linx. I've got an i7 920 and 6GB of memory, would you be able to work this out for me, as I'm confused by the calculation to do it myself.
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