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The last poster wins


TheCalliton

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I have mine oc'ed to 4.30ghz with standard turbo, i to have a 8350.

So you just upped the turbo? I'd go with manual frequency setting and voltage adjustments, it's easier and more stable since Turbo overvolts the f*** out of the CPU, 1.41V for 4.2GHz Turbo on 8350, 1.308V for 4.2GHz manually on 8320 (and 8320 has 1.41V for 4.0GHz Turbo, what the f*** AMD?).

 

And the gain between 4.2GHz and 4.3GHz is minimal, around 2-3%. The FX series CPUs gain their largest performance jumps when going 4.0 > 4.2 at which they get the largest performance-per-MHz, 10% increase in 200MHz. I did some research and some benchmarks on my own CPU, I was going to publish these results since they are quite interesting:

 

 

 

--Compiling Linux 3.9.6 in ramfs using all 8 cores, AMD FX 8320--

--Stock, 3.5GHz--
-Task duration: 14m46.339s (886.339 seconds)
-Performance: 100%

--Turbo, 4.0GHz--
-Task duration: 14m 26.701s (866.701 seconds)
-Time difference between 3.5GHz and 4.0GHz: 19.638s
-Performance: 102.26% (+2.26% from 3.5GHz)

--Overclocked, 4.2GHz--
-Task duration: 13m 2.306s (782.306 seconds)
-Time difference between 4.0GHz and 4.2GHz: 84.395s
-Performance: 113.29% (+11.03 from 4.0GHz)

--Overclocked, 4.4GHz
-Task duration: 12m 36.095s (756.095 seconds)
-Time difference between 4.2GHz and 4.4GHz: 26.211s
-Performance: 117.22% (+4.93% from 4.2GHz)

 

 

Got my hands on a few different chips to try (8320s and 8350s, got a friend working in a repair shop), they all exhibit the same performance and increases on the same frequency ranges, they all have a ~10% jump when going from 4.0GHz to 4.2GHz. And at 4.2GHz, both 8320s and 8350s have identical performance and can reach similar frequencies at similar voltages on the same hardware combination, implying that they are the same chip with different out-of-the-box frequency and Turbo setting.

Edited by Werne
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Am I really tired or are Werne and Thor speaking some kookie alien language?

ᛁ ᛞᛟᚾᛏ ᛏᚨᛚᚲ ᛁᚾ ᚨ ᚲᛟᛟᚲᛠ ᚨᛚᛠᚾ ᛚᚨᛜᚢᚨᚷᛖ᛭ :verymad:

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Am I really tired or are Werne and Thor speaking some kookie alien language?

ᛁ ᛞᛟᚾᛏ ᛏᚨᛚᚲ ᛁᚾ ᚨ ᚲᛟᛟᚲᛠ ᚨᛚᛠᚾ ᛚᚨᛜᚢᚨᚷᛖ᛭ :verymad:

 

 

Ohhhh! So that's what you guys were talking about! Right... :laugh:

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