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post #21 of 128
I keep getting between 46-53GFlops with my i7 920 between 4-4.4GHz with HT on. I have disabled all background apps, superfetch, windows defender, etc and ran LinX as administrator and did not use the comp during testing. I also noticed temps were about the same as P95 small ffts. I used 3072mb of ram because I only have 4GB. Any suggestions? Thanks!
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post #22 of 128
Thanks for the great post. +rep, and +vote for sticky.

I have a question though, because according to your calculations, my computer is seriously underperforming. I've got a Q9300 overclocked at 3.375GHz, and my ram is at 840MHz DDR2. FSB: DRAM Ratio = 450:420 (15:14)
Now, if I follow your formula, the calculation is 3.375 x 16, which equals 54.
So in theory, I should achieve at least 50GFlops.
In practice, it varies between 27 and 30.5.

So obviously there's something wrong, but is it because my overclock is bad or simply because I'm not running IBT properly? Normally, I kill most processes I don't need (even explorer.exe!), run a Free Memory program, then run IBT for about 20 seconds before stopping the test. Within 10 seconds, IBT reports how much free RAM I have so I choose Maximum and let it run its course.

EDIT:
I disabled the page file, but it's made absolutely no difference. After disabling, I rebooted and ran it. I was only getting 8GFlops! I rebooted again and it came back up to 29.7GFlops, but that's only slightly over half of what I should be getting.
Any advice?

EDIT 2:
According to your calculation and Intel's Documentation (http://www.intel.com/support/process.../cs-023143.htm) I should be getting 40GFlops at stock. I brought the machine back down to stop and I'm only getting 26.7GFlops. What the hell is up with that?
Edited by [Adz] - 2/8/10 at 12:48pm
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post #23 of 128
Quote:
Originally Posted by [Adz] View Post
Thanks for the great post. +rep, and +vote for sticky.

I have a question though, because according to your calculations, my computer is seriously underperforming. I've got a Q9300 overclocked at 3.375GHz, and my ram is at 840MHz DDR2. FSB: DRAM Ratio = 450:420 (15:14)
Now, if I follow your formula, the calculation is 3.375 x 16, which equals 54.
So in theory, I should achieve at least 50GFlops.
In practice, it varies between 27 and 30.5.

So obviously there's something wrong, but is it because my overclock is bad or simply because I'm not running IBT properly? Normally, I kill most processes I don't need (even explorer.exe!), run a Free Memory program, then run IBT for about 20 seconds before stopping the test. Within 10 seconds, IBT reports how much free RAM I have so I choose Maximum and let it run its course.

EDIT:
I disabled the page file, but it's made absolutely no difference. After disabling, I rebooted and ran it. I was only getting 8GFlops! I rebooted again and it came back up to 29.7GFlops, but that's only slightly over half of what I should be getting.
Any advice?

EDIT 2:
According to your calculation and Intel's Documentation (http://www.intel.com/support/process.../cs-023143.htm) I should be getting 40GFlops at stock. I brought the machine back down to stop and I'm only getting 26.7GFlops. What the hell is up with that?
I am getting similar issues. On my Q8400, with the given calculation, I should expect an average of 44.16 GFlops at 2.76GHz. After 15 runs, with close to everything disabled, I averaged 30.82 GFlops.

Anybody got the answer to our question?
     
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post #24 of 128
Quote:
Originally Posted by liberalelephant View Post
I keep getting between 46-53GFlops with my i7 920 between 4-4.4GHz with HT on. I have disabled all background apps, superfetch, windows defender, etc and ran LinX as administrator and did not use the comp during testing. I also noticed temps were about the same as P95 small ffts. I used 3072mb of ram because I only have 4GB. Any suggestions? Thanks!
Does the fluctuation happen during a single session?

If so, you could have thermal throttling issue.

Use i7Turbo from RealTemp to see if your multiplier drops during the runs.
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post #25 of 128
Quote:
Originally Posted by HSG502 View Post
I am getting similar issues. On my Q8400, with the given calculation, I should expect an average of 44.16 GFlops at 2.76GHz. After 15 runs, with close to everything disabled, I averaged 30.82 GFlops.

Anybody got the answer to our question?
Personally, if I don't get at least 50 GFlops, I'm considering RMA'ing it. Seeing as it's quite old, I might even end up with a newer model.
I was actually quite proud of it being able to hit 30GFlops, until I found out that's 75% of what I should be getting at stock!
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post #26 of 128
Quote:
Originally Posted by leppie View Post
Does the fluctuation happen during a single session?

If so, you could have thermal throttling issue.

Use i7Turbo from RealTemp to see if your multiplier drops during the runs.
Nope
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post #27 of 128
Quote:
Originally Posted by [Adz] View Post
Personally, if I don't get at least 50 GFlops, I'm considering RMA'ing it. Seeing as it's quite old, I might even end up with a newer model.
I was actually quite proud of it being able to hit 30GFlops, until I found out that's 75% of what I should be getting at stock!
Wow, maybe its our Quads 0.0

atleast you're getting 75%, im barely tipping 70% of mine. Lol
     
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post #28 of 128
Quote:
Originally Posted by HSG502 View Post
Wow, maybe its our Quads 0.0

atleast you're getting 75%, im barely tipping 70% of mine. Lol
That 75% is of the stock GFlops AFTER I've overclocked it to 3.375GHz.
With everything at stock, I get 66.75%
With my OC, I get a maximum of 55.48%
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post #29 of 128
Quote:
Originally Posted by [Adz] View Post
That 75% is of the stock GFlops AFTER I've overclocked it to 3.375GHz.
With everything at stock, I get 66.75%
With my OC, I get a maximum of 55.48%
I see. In that case, when overclocked I only get 72% of stock GFlops. What is wrong here?
     
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post #30 of 128
Quote:
Originally Posted by liberalelephant View Post
Nope
Disable HT and watch the magic
It'll add 8~12 more GFlops.

I also get about 52 GFlops @ 4Ghz on my 920 with HT on.
But it goes upto and over 60 when I disable HT.
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