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8350 @ 4.9GHz need HELP to get to 5.0GHZ (Crosshair V Formula)

Heatshiver
Level 7
So since the FX-9000 was introduced at E3 I decided I would forego paying $960 and just try to achieve the clocks with my FX-8350.

This is what I am working with:

Crosshair V Formula
Windows 7 x64
FX-8350
32GB G.Skill Ares 1866MHz
COOLER MASTER Seidon 120M (Closed Loop Liquid CPU Cooling)
Several HDD (all in RAID), but a Kingston 96GB SSD (V100) as primary
COOLER MASTER HAF 922 Case (with 120mm fans everywhere but the bottom)

I was able to get up to 4.92GHz with the following:

CPU Ratio: 24.0
FSB: 205
DDR3: 1912MHz
CPU Manual Voltage: 1.481250 (Extreme OV Enabled)
DRAM Voltage: 1.65
DRAM Voltage Switching Frequency: 2x
NB Voltage Switching Frequency: 2x


I have tried numerous combinations of the multiplier and FSB to get 5.0GHz. I can achieve it and boot Windows, but when I try a benchmark like Prime95 x64 it'll get through part of the first part or the second before the system freezes. I have also bumped up the CPU voltage to 1.525 while trying these combinations, but to no avail. Essentially, I would just move the multiplier up (or down) and then set the FSB to just barely be at 5.0GHz. Some combinations would allow me to boot, but most wouldn't.

What else can I do to get to 5.0GHz? I'm open to any suggestions. I don't care about getting passed that, but as long as I can reach that objective (stably) I'll be satisfied.

Thanks!
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11 REPLIES 11

skellattarr
Level 11
80 degrees is that 80c or 80f? if 80c thats way to hot if it on the core you should not go above 62c.
amd ryzen 9 3950x
CROSSHAIR Viii hero
Corsair Hydro Series H115i
G.SKILL Trident Z 3200mhz 64gb 4x16 timings 16,18,18,38
asus rog strix gtx 1080
TOSHIBA 3TB hdd 3x a total of 9tb, 10 tb hdd and a 1tb mushkin ssd
corsair axi 1200i 1200 watt psu
thermal take view 71 case

The 80 degrees only occurred in a few Prime95 benches when I was changes voltages for testing. Most of the time it was around 63-65 degrees in those tests.

I started using RealBench, specifically the encoding bench, as that seems to be the only part that will fail if I have an unstable overclock.

I had to somewhat start over and started with this guide.

I tried to match those settings as best I could since they are slightly different for the Crosshair V Formula.

I essentially go up to 4.72GHz stable with 1.48v. Anything passed that just seems to have problems.

What (exact) settings from that post should I try to achieve 4.8GHz and above? I've been trying numerous ways without success. A better question is what values should I never go past for CPU voltage, NB voltage, CPU/NB Voltage?