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[YT] AMD FX Bulldozer @ 6.5 GHz - under LN2 - Page 7

post #61 of 116
Still though, 8 cores at 6.5 could get a lot done, for instance NOT taking 2 days to convert 15 gigs of videos -.- My comp is screaming to be turned off xD
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Mr.Hoover
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post #62 of 116
Quote:
Originally Posted by Fr0sty View Post
even so ... its obr .. he's just a noob at oc'ing and it might still be an es sample ...
It's an ES sample, which aren't good overclockers compared to the retail version that will come out.
    
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post #63 of 116
OBR has tried very hard to hide the model number of his precious engineering sample, but it looks like he's now slipped up. At about 7 seconds into the video you can just make out the model number of the CPU: "AMD Eng Sample, ZD2851W8K44". The digits K44 at the end indicate that this is the old OR-B0 stepping. The other digits indicate that it is a desktop engineering sample with eight cores and a 2.8 GHz stock clock. It will be interesting to see how the retail chips (presumably B2 or B3 stepping) will clock compared to this B0 sample.

post #64 of 116
Quote:
Originally Posted by Schmuckley View Post
doesn't look like it made it through the superpi 1-thread,1m run..it rebooted on him
you Saw that to eh , it did look like it rebooted on him so they turned off the cam to try and cover it up, but that what it looked like
post #65 of 116
Thread Starter 
Quote:
Originally Posted by gplnpsb View Post
OBR has tried very hard to hide the model number of his precious engineering sample, but it looks like he's now slipped up. At about 7 seconds into the video you can just make out the model number of the CPU: "AMD Eng Sample, ZD2851W8K44". The digits K44 at the end indicate that this is the old OR-B0 stepping. The other digits indicate that it is a desktop engineering sample with eight cores and a 2.8 GHz stock clock. It will be interesting to see how the retail chips (presumably B2 or B3 stepping) will clock compared to this B0 sample.

Sauce? How do you know this?
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post #66 of 116
Quote:
Originally Posted by Dranx View Post
Sauce? How do you know this?
It was already disclosed long time ago how to encode the serial.

So a B0 can do 6.5ghz, cool.
..
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post #67 of 116
Quote:
Originally Posted by 996gt2 View Post
From looking at that video, it seems like he starts Super Pi 1M at around 1:16, and CPU utilization remains at 100% up to 1:24 or so.

So that means the 6.5 GHz chip takes at least 8 seconds to do a SuperPi 1M run, which isn't that impressive in itself considering a 5.0 GHz 2500K will do it in around 7.5 seconds.

But then again SuperPi isn't exactly the best indicator of performance so this video doesn't tell us much.
You can't compare an AMD SuperPI score to a Intel one.
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post #68 of 116
Quote:
Originally Posted by DrDarkTempler View Post
Did you guys know that he only overclock one Core to 6.5ghz? and other are at normal or slightly overclocked?

Also this is another Engineer sample... we need the real one
lol I noticed that as well, only one core was overclocked. I have turboV evo on my crosshair V and you can change the multi for individual cores
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post #69 of 116
Quote:
Originally Posted by 996gt2 View Post
From looking at that video, it seems like he starts Super Pi 1M at around 1:16, and CPU utilization remains at 100% up to 1:24 or so.

So that means the 6.5 GHz chip takes at least 8 seconds to do a SuperPi 1M run, which isn't that impressive in itself considering a 5.0 GHz 2500K will do it in around 7.5 seconds.

But then again SuperPi isn't exactly the best indicator of performance so this video doesn't tell us much.
MATH TIME!!!!!!!!!

If Bulldozer is 8 seconds @ 6.5 GHz, it's roughly 10.5 seconds @ 5 GHz.
Let's say that an i5 2500k is 7.5 seconds @ 5 GHz.

This means Bulldozer's power per core is roughly 72% of a Sandy Bride core...then AMD gives us EIGHT of those cores to play with over the 4 from Intel.

8 cores @ 72% = 5.8 equivalent SB cores; 45% faster than a 2500k in fully threaded apps. Bulldozer might actually come pretty damn close to matching SB-E let alone SB...of course that's if this video and thread is worth anything at all.

I'm betting it's not.
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post #70 of 116
Quote:
Originally Posted by kweechy View Post
MATH TIME!!!!!!!!!

If Bulldozer is 8 seconds @ 6.5 GHz, it's roughly 10.5 seconds @ 5 GHz.
Let's say that an i5 2500k is 7.5 seconds @ 5 GHz.

This means Bulldozer's power per core is roughly 72% of a Sandy Bride core...then AMD gives us EIGHT of those cores to play with over the 4 from Intel.

8 cores @ 72% = 5.8 equivalent SB cores; 45% faster than a 2500k in fully threaded apps. Bulldozer might actually come pretty damn close to matching SB-E let alone SB...of course that's if this video and thread is worth anything at all.

I'm betting it's not.
That was some pretty crazy inaccurate math. Even if it was somehow "accurate", SuperPi is a horrible way of measuring performance as it favors performance towards Intels CPUs. That makes it impossible to compare the performance of AMD and Intel against each other in this benchmark.
    
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