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Max voltage Fx 8300? Do fsb can reach higher clock than multi? - Page 2

Poll Results: Max volt for 24/7

 
  • 22% (2)
    1.5
  • 33% (3)
    1.55
  • 33% (3)
    1.60
  • 11% (1)
    1.45
9 Total Votes  
post #11 of 13
1,7v for only 5.1ghz is crazy rare. But if you can cool and run it........

Here's a more realistic possibility 1.572v on custom liquid loop. Pretty stable, but would not consider it a 24/7 clock.

This is 55c load temp.



If you are running a server, stability should be sought long before a high overclock. People don't typically game in servers that aren't running.

Edit. I voted 1.5000v ftw,
post #12 of 13
An FX-8300 is likely (but not guaranteed) to be a low leaker, which means it might not OC as well as another chip would. The 8300 is very similar to an 8370e, in that it runs at a fairly low stock frequency (3.3 GHz) to meet a 95W TDP, but has a comparatively high 4.2 GHz turbo speed (an 8370e is 3.3/4.3 and costs a ton more, and may or may not be worth it).

If the chip's leakage characteristics don't hold it back, I would imagine it would behave the same as the vast majority of FX-83x0's I've seen, including the one I owned. In 2013, I reached 4.85 GHz on an 8350, using a Giga 970A-UD3 ver 1.2 at a multiplier of 21 and a reference clock (it's not an FSB...) of 231. It took 1.51v (1.485 effective) to reach those settings and be stable. The chip could boot as high as 5.1 GHz with 1.62v, but I was using air cooling and anything beyond the 4.85 GHz was iffy at the vcore settings I had to use. The heat was just too much, even for a dual-tower, dual-fan air cooler. A newer 8350 would likely have no trouble making it to 5 GHz on the setup I used, but FX chips in 2013 didn't speed-bin as well as they do now. 4.85 on air with an 8350 at that time was doing very well.

Anyway, in my experience, the best overclocks on FX happen when you use both the reference clock and the multiplier. Some combinations just work better than others. My 8350 was perfectly stable at 21*231 with 1.485v, but couldn't even boot at 24*200 with 1.5, even though that was a lower clock speed. To get 5 GHz on that chip without using both was impossible, but very easily done if you did. Several other people had the same experiences, although pushing the reference clock past the 235-238 range usually resulted in failure (some people did better, YMMV, but most crapped out before 240). Phenom II's could run on much higher ref clocks than FX does.

It's kind of a crapshoot, like all overclocking. You'll need to use trial and error to figure out what it will do, especially with 8300's and 8310's. Some of them are low leakers that don't OC well, and others have normal leakage characteristics but reach high frequencies on low voltage--golden chips, in other words.
     
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CPUMotherboardGraphicsRAM
AMD Athlon X4 870K 4700mhz 1.63v ASUS A88X-PRO Radeon HD 6970 G.SKILL Ripjaws X Series 16GB DDR2133 
Hard DriveHard DriveHard DriveHard Drive
Kingston V300 Toshiba 2.5" laptop HDD, 1TB Micron C300 SSD Generic 2TB HDD WL2000GSA1672 (external) 
Hard DriveOptical DriveCoolingOS
Seagate Momentus XT 500GB ASUS DVD-RW Prolimatech Black Series Megahalems Linux Mint 18 Cinnamon "Sarah" 
OSMonitorKeyboardPower
Windows 10 ViewSonic VG2030wm IBM Model M Fractal Design Newton R3 600W 
CaseMouseAudioOther
Phanteks Enthoo Pro Logitech Marble Mouse Behringer UCA222 Upgraded Realistic Minimus-7 speakers, Lepai 20... 
CPUMotherboardGraphicsRAM
Intel Core 2 Duo Mobile T9900 Dell 0G848F Intel Mobile 4 series 4GB Crucial DDR2-6400 
Hard DriveOptical DriveOSMonitor
OWC Mercury Electra 3G 44GB SSD stock DVD-RW Linux Mint Cinnamon 17.1 "Rebecca" 1366x768 WXGA 
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post #13 of 13
Thread Starter 
Thank all for your advice smile.gif


It help alot.


Il try to see how far i can get at 1.55+

Write that down..


And go down to 1.42-1.5v at at clock that will be stable for my low usage game server
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Gaming PC
(18 items)
 
HTPC
(13 items)
 
 
CPUMotherboardGraphicsRAM
Amd Fx 8300 95w Gigabyte 970A-UD3P 8 Phase Sapphire 7950 G.SKILL Trident X DDR3 1600 7-8-8-24 1x8gb 
Hard DriveCoolingOSMonitor
Seagate Barracuda ST1000DM003 1tb Corsair H110i GTX Windows 10 64bit Pro 1440x900 Acer 
KeyboardPowerCaseMouse
Coolermaster Devastator Red Corsair RM650 Coolermaster Haf XB Coolermaster Devastator 
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