FX8320, FX8350 or wait for the FX8300? Wait...

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MightyMalus

Senior member
Jan 3, 2013
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...aren't they all unlocked? Does it really matter?
Couldn't one just underclock the 8350 to the 8320/8300 spec and have the lower power benefit?

What's the point when all of them are unlocked? Why get the 8350 when you can get the 8320 cheaper? Why get the 8320 when you can get the 8300(not yet, but still).

Question, is a lower TDP rated part better than a higher one?
If all three models where available right now, 8350, 8320(125w) and the 8300(95w), which one would you choose and why?
 
inf64

inf64

Diamond Member
Mar 11, 2011
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Binning. 8320 generally OC lower by a 100-200Mhz than 8350.Power draw is different too,but it depends on the specimen usually.
Is power a concern to you? If not buy 8350 and OC it o ~4.7Ghz,don't look back.
If power draw is important to you you can go cheaper and buy 8320(both 8350 and lower TDP 8300 are more expensive) and underclock+undevolt for lower power with good performance. You can manually tweak the Turbo function to give you good bursty speed in ST/poorly thread apps while maintaining good 8 thread performance in workloads that are MTed even at lower clock.
 
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MightyMalus

Senior member
Jan 3, 2013
292
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Is there like a limit to underclocking/volting? Or risks?

What would you consider a good Mobo for the 8320? Only need one HDD and one ODD. Maybe(probably not) add an SSD in the future. That's it.
 
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grimpr

Golden Member
Aug 21, 2007
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Get an 990FX motherboard for the 8core AMDs, avoid MSI, stick with ASUS,Asrock and Gigabyte.
 
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MightyMalus

Senior member
Jan 3, 2013
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AtenRa

AtenRa

Lifer
Feb 2, 2009
14,003
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No need to get the 990FX, the 970 chipset will be much better for your needs.

I recommend the ASUS M5A97 R2.0 or the ASUS M5A97 Pro R2.0
 
D

dguy6789

Diamond Member
Dec 9, 2002
8,558
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MightyMalus said:
Is there like a limit to underclocking/volting? Or risks?

What would you consider a good Mobo for the 8320? Only need one HDD and one ODD. Maybe(probably not) add an SSD in the future. That's it.
Click to expand...


The only risk is too low of voltage can make the machine unstable. You can't damage anything from underclocking and undervolting.
 
tweakboy

tweakboy

Diamond Member
Jan 3, 2010
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www.hammiestudios.com
MightyMalus said:
Is there like a limit to underclocking/volting? Or risks?

What would you consider a good Mobo for the 8320? Only need one HDD and one ODD. Maybe(probably not) add an SSD in the future. That's it.
Click to expand...


What is ODD ?

If your overclocking grab the 8350. If your a enthusiast get that chip.

If you get a lower model your looking at lower speeds for what 30w save ?


You can always underclock and undervolt the 8350 but also one day say a year from now or 2 years, you might itch to finally overclock. You can safely take that chip to 4.7Ghz higher then that and you can boil a egg on your rig. I dont know how muich voltage it takes for 4.7 but an amd guru will set you straight. gl
 
FlanK3r

FlanK3r

Senior member
Sep 15, 2009
321
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FX-8300, its the same silicon as for FX-8350 (better binned for TDP 95W). OC will be the same as with FX-8350.
 
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Greenlepricon

Senior member
Aug 1, 2012
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If you're going for getting the most power from your processor (and most power draw), you'll want the 8350. My 8320 hates to be pushed past 4.5 or so and gets a little wonky if I stress it. More voltage could fix this but I hate adding so much when I've heard of other people getting much better clocks with the same voltage I'm adding. If you want to get the most power savings, then the 8300 or 8320 is the way to go. You can get the same results if you want to downclock and your processor just happens to be pretty efficient, but then why not go for the cheaper option anyway.
 
FlanK3r

FlanK3r

Senior member
Sep 15, 2009
321
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OC of FX (as SB-E) depends at more factores...VRM area, cooling of CPU, PSU 12V rails. With one worse part of this you can get over 4.5 GHz (or not much over) with FX-8350 :).
 
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Jovec

Senior member
Feb 24, 2008
579
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Binning matters, but ultimately the silicon lottery varies. Any given 8300, 8320, or 8350 can either OC poorly or well.

If you are going for a large OC, don't skimp on the motherboard. I think many FX users here might be surprised to find their motherboard down-clocking under heavy loads to get the power usage in check. MSI has admitted as such and my Gigabyte (990XA-UD3) appears to do it too. Stock FX pulls more than 125w for artificial workloads (i.e. stress testing). AMD's power requirements are for heavy real-world usage, not maximum load. They've done this before with their lower-power "e" designated Phenom 2s where they weren't stable at stock volts for stress testing but otherwise ran fine.
 
FlanK3r

FlanK3r

Senior member
Sep 15, 2009
321
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yes, the best for OC are C5F (C5F-Z), Sabertooth, M5A99x or ASR Extreme 7 nad giga ud7 in last revision
 
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MightyMalus

Senior member
Jan 3, 2013
292
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Ugh, went over budget.

I think I can go lower on the PSU and HDD...

How much "free" room should you have on a PSU? And, what's a good way to estimate whole system usage?

Unless I can lower the price by quite a bit, I might have to go to an FM2 build or FX-4300. Which, I am already checking. -.-'' Its the first build...so yeah.

(Will not go with an Intel.)
 
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MightyMalus

Senior member
Jan 3, 2013
292
0
0
Will a 550W PSU be enough for a 8320 and a HD7870? Cutting it too close for a high end GPU right?

(At the moment, the APU system hovering at about $662 and the FX8320 system at $862, a bit less with the 550W PSU around a clean $800. The GPU for the build is a very cheap 7750, just need the features not the performance.)
 
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Sleepingforest

Platinum Member
Nov 18, 2012
2,375
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Even a 500W PSU should be okay. A 7970 and a full system together at load takes less than 550W. Two 7970s together take only 650W at most.
 
guskline

guskline

Diamond Member
Apr 17, 2006
5,338
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I'm using an Antec Gamer 750 Watt PSU for my 8350 OC'd to 4.6Ghz with GTX670's in SLI. Kill o watt show a spike as high as 575 Watts.
 
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