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Why does anyone buy a FX-8350?

post #1 of 21
Thread Starter 
Isn't it the same thing as the FX-8320?

They're both unlocked, so you're basically paying more to have a higher default multiplier, which you're probably going to change anyway.
post #2 of 21
Quote:
Originally Posted by demoship View Post

Isn't it the same thing as the FX-8320?

They're both unlocked, so you're basically paying more to have a higher default multiplier, which you're probably going to change anyway.

Maybe, because about 95% of people don't overclock their CPU, and Fx-8350 is clocked higher than other ones? And, yes, for those which would make overclock fx-8320 seems the better option being cheaper and achieving almost the same frequency. The difference between FX-8350 and FX-8320 gets a small margin.
Edited by sorance2000 - 5/30/13 at 12:06am
post #3 of 21
Quote:
Originally Posted by sorance2000 View Post

Maybe, because about 95% of people don't overclock their CPU, and Fx-8350 is clocked higher than other ones? And, yes, for those which would make overclock fx-8320 seems the better option being cheaper and achieving almost the same frequency. The difference between FX-8350 and FX-8320 gets a small margin.

and 8350 is higher binned as opposed to 8320 where a 8350 can do 5GHz at 1.55v it may take the 8320 1.62 Also heat production is another thing within the binning process so it depends on what setup you have for cooling and how extreme you want to go Always helps to have a higher binned chip
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post #4 of 21
Quote:
Originally Posted by F3ERS 2 ASH3S View Post

and 8350 is higher binned as opposed to 8320 where a 8350 can do 5GHz at 1.55v it may take the 8320 1.62 Also heat production is another thing within the binning process so it depends on what setup you have for cooling and how extreme you want to go Always helps to have a higher binned chip

This ^. If you are willing to invest in good cooling then get the 8350 and overclock to the moon. If you are not willing to invest in more than say, a Hyper 212, then you should get the 8320 and overclock to about 4.4-4.5. That's how I see it at least.
post #5 of 21
IDK I was looking at the 8350 but as you said it is the same as 8320 and cheaper so I'm picking up the 20 and pushing it to about 4.5 probably and for those that don't over clock but want 4.0 GHZ you can mess with the cpu % and force it to always be higher
 
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post #6 of 21
There is not much difference between the 8320 and 8350. The 8350 is higher binned so its more likely to obtain a higher, more efficient overclock than its little brother. Good for people like me who enjoy pushing the limits on their rigs(or as previously mentioned if you dont overclock at all because of its higher default settings). If you only do mild overclocking the 8320 will be the more reasonable choise.

I managed to take mine to 5.2ghz @1.59V watercooled(running at 4.8 @1.48 atm). Its a good processor and it does everything I need it to do with good efficiency and at a cheaper price tag than an Intel build would have cost me(because I didnt have to buy a new MoBo for it to run on biggrin.gif).
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post #7 of 21
Thread Starter 
Quote:
Originally Posted by sorance2000 View Post

Maybe, because about 95% of people don't overclock their CPU, and Fx-8350 is clocked higher than other ones? And, yes, for those which would make overclock fx-8320 seems the better option being cheaper and achieving almost the same frequency. The difference between FX-8350 and FX-8320 gets a small margin.

95% of people also buy their CPUs bundled with everything else from an OEM.

I would say a good amount of people who buy an individual CPU (especially people who buy AMD) know how to overclock. And if it's just bumping the 20's multiplier up to the 50's multiplier, the odds of having something go wrong is probably the same as getting a CPU that's DOA.

Quote:
Originally Posted by F3ERS 2 ASH3S View Post

and 8350 is higher binned as opposed to 8320 where a 8350 can do 5GHz at 1.55v it may take the 8320 1.62 Also heat production is another thing within the binning process so it depends on what setup you have for cooling and how extreme you want to go Always helps to have a higher binned chip

Is there actually data to support this? I'm curious as to how the 20s match up vs the 50s. I'm skeptical as to how much testing is done for the binning process. For all we know they took all the same chips and slapped different multipliers / SKUs on them. (And I'm talking about a sample size of maybe like 20 chips each, sample sizes of 2 - 3 chips are worthless)
post #8 of 21
Quote:
Originally Posted by demoship View Post

95% of people also buy their CPUs bundled with everything else from an OEM.

I would say a good amount of people who buy an individual CPU (especially people who buy AMD) know how to overclock. And if it's just bumping the 20's multiplier up to the 50's multiplier, the odds of having something go wrong is probably the same as getting a CPU that's DOA.
Is there actually data to support this? I'm curious as to how the 20s match up vs the 50s. I'm skeptical as to how much testing is done for the binning process. For all we know they took all the same chips and slapped different multipliers / SKUs on them. (And I'm talking about a sample size of maybe like 20 chips each, sample sizes of 2 - 3 chips are worthless)

actually yeah there is for starters here http://www.overclock.net/t/1331219/fx-83xx-data-collection-thread and http://en.wikipedia.org/wiki/Product_binning

It is this binning process that also allowed for the phenoms to unlock from 3 to 4 cores or 4 to 6 cores.... Also performance at the same frequency is the same however AMD has to fit with inside a 125w TDP that is the heat out put as well as voltage. In most cases a 8320 either requires too much voltage for it to be called a 8350 or produces too much heat in either case it does not fit within the spec for either TDP or voltage. All TPD is how much heat is produce in conjunction of voltage.

Now you may get lucky and get a rebadged 8320 that should be a 8350 to fit supplier needs. I should add this was the same process for bulldozers as well. Same thing for the 83xx as the 81xx only thing that changed was the arch

All of this is common practice as to now waste product that is still good just not 100% of the top specs.. nVidia does it AMD does it Also I believe Intel does it with the k and non k versions.. However now all chips are built as such for instance AMD APU's from my knowledge are not.
Edited by F3ERS 2 ASH3S - 5/30/13 at 9:42am
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post #9 of 21
Thread Starter 
iirc most of those 3 core AMDs were unlockable to 4 cores, unless you happened to get one that was really defective. Though I'm surprised those were actually unlockable, as I thought the manufacturer used a laser to sever the connections between the disabled core and the rest of the chip.

The intel K/Non-K versions are totally different. The non-K has a locked multiplier, the K is unlocked (and happens to have better integrated graphics, which is a joke since nobody who buys the K processor is using integrated graphics, unless they're making a server, where the graphics don't matter anyway). In fact, the 3570 and 3570K have the exact same multiplier out of the box.
post #10 of 21
CPU manufacturers really do bin their parts, and AMD does more testing than Intel, since every FX CPU they produce is actually an 8-core when it comes out of the foundry. The ones that have bad or weak cores have one or two modules with the bum cores disabled and get sold as 4300 or 6300 chips. The best ones that pass on all eight cores are badged as 8350s, and the rest are sold as 8320s. Now, if they get a batch of them from particularly good silicon wafers, they might all pass as 8350s, but some get badged as 8320 to meet price points. That's the luck of the draw, though, and you can't count on it. I bought an 8350 to make sure I got a good chip, and I don't regret doing so.

One good way to get a "live" overclocker on a lower-binned chip is to buy right at the end of a certain product's life cycle. By the time AMD is ready to roll out Steamroller, they'll probably be getting 8350-quality chips as a matter of course, because all of the kinks will have been worked out in the fabbing process. It works with Intel, too. Right now, people are reporting outstanding success with overclocking ordinary Ivy Bridge chips, which would have been made in the last weeks before Intel pushed it off the line to make Haswell.

One of the best overclocking chips I ever had was an AMD Athlon XP 1600+, about 10 years ago. AMD took the last run of 180nm "Palomino" cores and badged them all as 1600+ so they could move on to the 130nm Thoroughbred-A core. Newegg blew them out at $42 each, and it was quickly discovered that most of these 1600+ chips would easily overclock to 2400+ levels or more. Meanwhile, Tbred-A was three times as much and a complete dog; AMD had to revise it to Tbred-B, which was fantastic. I ended up selling that Pally 1600+ for more than I actually paid for it.
     
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