Overclock.net › Forums › AMD › AMD CPUs › I want to sell FX 6100 and buy FX 8350 ?
New Posts  All Forums:Forum Nav:

I want to sell FX 6100 and buy FX 8350 ? - Page 2

post #11 of 18
Well they're both the same chip dies, ones just clocked higher.

FX-8320 turbocores up to 4Ghz, so its safe to say 4Ghz can be reached with that chip.
FX-8350 turbocores up to 4.2Ghz, so its safe to say 4.2Ghz can be reached with that chip.

What we don't know is that VID your chip would require. Its luck of the draw unfortunately, because you may find the FX-8350 can be clocked very high on low voltages, but then you may find that its VID is already set high which can limit your overclock. It's 50/50

Unfortunately we can't recommend one over the other because all chips are different, and depending on how AMD stress testes them determines their set VID to function at that frequency.

So what I am saying is either the FX-8320 or the FX-8350 can be clocked to 4.7Ghz, but in terms of voltage we do not know because voltage is specific to the chip die itself.

It's completely down to luck.

Also bare in mind, if you're FX-6100 gets that hot at 1.45v you can bet the 8 core will exceed the safe limit.
post #12 of 18
Thread Starter 
Quote:
Originally Posted by mikeo01 View Post

Well they're both the same chip dies, ones just clocked higher.
FX-8320 turbocores up to 4Ghz, so its safe to say 4Ghz can be reached with that chip.
FX-8350 turbocores up to 4.2Ghz, so its safe to say 4.2Ghz can be reached with that chip.
What we don't know is that VID your chip would require. Its luck of the draw unfortunately, because you may find the FX-8350 can be clocked very high on low voltages, but then you may find that its VID is already set high which can limit your overclock. It's 50/50
Unfortunately we can't recommend one over the other because all chips are different, and depending on how AMD stress testes them determines their set VID to function at that frequency.
So what I am saying is either the FX-8320 or the FX-8350 can be clocked to 4.7Ghz, but in terms of voltage we do not know because voltage is specific to the chip die itself.
It's completely down to luck.
Also bare in mind, if you're FX-6100 gets that hot at 1.45v you can bet the 8 core will exceed the safe limit.

only in % 100 prime 95 it gets max 60-65. for gaming and general usage , which I only do in pc, it only gets 53-55 degress in gaming. so its relatively low heat for 1.45 voltage. So I am suspicious of 8350 or 8320 to get same 4.5 ghz with lower voltage. or at least with same voltage , same speeds but with better performance .

To calculate mathemeticaly:

I need 1.45 volts to get fx 6100 from 3.3 ghz (turbo 3.9 ghz) to 4.5 ghz ,

so

I will only need to raise from 4.2 stock ito 4.5 ghz in fx 8350 with lower voltages?

if maths speaks thats what I assume from it biggrin.gif
Edited by kersoz2003 - 12/9/12 at 11:49am
4790K BEAST
(14 items)
 
  
Reply
4790K BEAST
(14 items)
 
  
Reply
post #13 of 18
Thread Starter 
Quote:
Originally Posted by kersoz2003 View Post

only in % 100 prime it gets max 60-65. for gaming and general usage , which I only do in pc, it only gets 53-55 degress in gaming. so its relatively low heat for 1.45 voltage. So I am suspicious of 8350 or 8320 to get same 4.5 ghz with lower voltage. or at least with same voltage , same speeds but with better performance .

Also I have a Xigmatek 500 watt psu for my system which is adequate for fx 6100 and hd 7850 1 gb powercolor gpu combination . will fx 8320 or fx 8350 be ok ?
4790K BEAST
(14 items)
 
  
Reply
4790K BEAST
(14 items)
 
  
Reply
post #14 of 18
It completely depends on the chip die itself. VID is the voltage required by the chip to operate at a given frequency, so your FX-6100 may have been one of those chips that require a higher/lower voltage.

The FX-8320/50 may or may not hit the same frequency with lower/similar voltages. Piledriver is efficient than Bulldozer so its more likely you could hit it with a lower voltage, but nothings guaranteed.

It'll definitely give better performance even at stock. You are aiming for a moderate overclock, which is probably achievable with the lower clocked FX-8320.

It may be more likely the FX-8350 can clock higher purely because its base clock is higher, but that's not always the case.

EDIT:
Your FX-6100 probably drew out 125W or more based on your overclock, so I bet an overclocked FX-8320/50 will draw out 150W+ depending on your voltage and base frequency.

Your PSU is 500, so in theory it probably can output around 400w if its 80% efficiency rating.
HD 7850 is about 120W, so you may be close to your power supplies limit if you overclock it (my math isn't the best rolleyes.gif)
Take a look here, add your components in and your OC and it'll give you a rough esitmate :
http://www.extreme.outervision.com/psucalculatorlite.jsp
Edited by mikeo01 - 12/9/12 at 11:57am
post #15 of 18
Thread Starter 
Quote:
Originally Posted by mikeo01 View Post

It completely depends on the chip die itself. VID is the voltage required by the chip to operate at a given frequency, so your FX-6100 may have been one of those chips that require a higher/lower voltage.
The FX-8320/50 may or may not hit the same frequency with lower/similar voltages. Piledriver is efficient than Bulldozer so its more likely you could hit it with a lower voltage, but nothings guaranteed.
It'll definitely give better performance even at stock. You are aiming for a moderate overclock, which is probably achievable with the lower clocked FX-8320.
It may be more likely the FX-8350 can clock higher purely because its base clock is higher, but that's not always the case.
EDIT:
Your FX-6100 probably drew out 125W or more based on your overclock, so I bet an overclocked FX-8320/50 will draw out 150W+ depending on your voltage and base frequency.
Your PSU is 500, so in theory it probably can output around 400w if its 80% efficiency rating.
HD 7850 is about 120W, so you may be close to your power supplies limit if you overclock it (my math isn't the best rolleyes.gif)
Take a look here, add your components in and your OC and it'll give you a rough esitmate :
http://www.extreme.outervision.com/psucalculatorlite.jsp

ok I did it and results with 4.5 ghz overclocked Fx 8350 psu and other components of my pc :

Minimum PSU Wattage: 299 W
Recommended
PSU Wattage: * 349 W

so 500 watt would be enough cause fx 6100 is also 280 watt minimum , recommended is 330 .So 500 watt psu would be enough for 8350 thumb.gif
4790K BEAST
(14 items)
 
  
Reply
4790K BEAST
(14 items)
 
  
Reply
post #16 of 18
Ah should be fine then biggrin.gif there are many power supply calculators out there, thermalright do one too. Your PSU is 80% eff isn't it?
post #17 of 18
Quote:
Originally Posted by mikeo01 View Post

Your PSU is 500, so in theory it probably can output around 400w if its 80% efficiency rating.
This is actually false, a 500W PSU is designed to output 500W at 80% efficiency, drawing 628W from the wall.
post #18 of 18
I have never heard of that. Isn't that illegal? Because its false advertising.

The max output is 500W, the max efficiency rating would be 80% depending on the condition which is usually measured in thermal conditions. Otherwise the max output in amps for each rail should be labelled differently otherwise that gives a false total...?
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › I want to sell FX 6100 and buy FX 8350 ?