Piledriver Overclocking

csimoncsimon Acadiana Icrontian
edited January 2013 in Hardware
As a continuation to my previous thread Zambezi build, I thought I would begin logging some overclock settings & results. To summarize the Zambezi build, the whole build actually took place except for the actual Zambezi X8 core cpu. The Thuban 1100T turned out to be a better investment for my CAD needs, and I also built one for a friend who is a Gelologist. At the time we needed cool reliable overclocks for work and production on these rigs since we both do side jobs. I was able to achieve 4ghz effortlessly and these chips have served us well all year.

This takes me to the new year and a new chip. I decided to pick up an FX-8350 Piledriver core since the performance yields were showing to be somewhat better than Zambezi. IMHO this chip is ok really,but I'll have a better opinion once I get things stable for 24/7 production, gaming, & F@H.

So to cut to the chase since time is limited, here are my current overclock setting being tested:

BIOS settings
Current CPU Spped: 4500mhz
CPU Ratio: 22.5
CPU Bus: 200
Mem Freq.: DDR3-2133mhz
CPU/NB Freq.: 2600mhz
HT Link Speed: 2600mhz
DRAM Timings: 9-11-10-38-1T
CPU Voltage: 1.375v
CPU/NB Voltage: 1.325v

I'll try and post some screenies later. If anyone has any input please chime in.
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Comments

  • csimoncsimon Acadiana Icrontian
    edited January 2013
    I was able to get cooler settings ...not sure if lowering the mem frequency had anything to do with it but I was able to do some overclocking on this cool winter Saturday. This was my starting point:

    BIOS settings
    Current CPU Speed: 4500mhz
    CPU Ratio: 22.5
    CPU Bus: 200
    Mem Freq.: DDR3-1866mhz
    CPU/NB Freq.: 2600mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 8-9-9-26-1T
    CPU Voltage: 1.35v
    CPU/NB Voltage: 1.325v

    I didn't test a lower cpu voltage but it felt like it could be lowered.

    More results after breakfast.
  • csimoncsimon Acadiana Icrontian
    This is where I've ended up for now trying to get F@H stable:

    BIOS settings
    Current CPU Speed: 4700mhz
    CPU Ratio: 23.5
    CPU Bus: 200
    Mem Freq.: DDR3-1866mhz
    CPU/NB Freq.: 2600mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 8-9-9-26-1T
    CPU Voltage: 1.4625v
    CPU/NB Voltage: 1.325v

    I had 1.45v set on bios initially but F@H was puking up EU's left and right so I upped it a bit. Also, paying closer attention to vdroop & digi+ vrm settings.
  • ThraxThrax 🐌 Austin, TX Icrontian
    That's a good, solid OC. How's the temperature?
  • csimoncsimon Acadiana Icrontian
    edited January 2013
    Thrax said:

    That's a good, solid OC. How's the temperature?

    At the moment the only way to describe it is - insanity. I am having a bitch of a time getting this thing F@H stable. I can run all of the LinX, Cinebench, wPrime, & CPUID Mark for days ...nothing touches F@H. Okay maybe OCCT but don't get me started.

    I'm down to this atm,

    BIOS settings
    Current CPU Speed: 4600mhz
    CPU Ratio: 23
    CPU Bus: 200
    Mem Freq.: DDR3-1866mhz
    CPU/NB Freq.: 2600mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 8-9-9-26-1T
    CPU Voltage: 1.475v
    CPU/NB Voltage: 1.325v

    I'm about to try another approach before I lose my mind.

    edit:/ Ok this is what I had in mind when mentioning "another approach". You see - @Raven.7 said "Adding to the list of people who have already mentioned. Anything over 22.5x is almost impossible. Time to start Bus OCing. I have't done this since the C2D days." here http://www.overclock.net/t/1318995/official-fx-8320-fx-8350-vishera-owners-club/1470

    So apparently perhaps that's why I've been successfully folding all week @ 4500mhz and nothing higher this weekend. Hopefully this is the issue.
    I'll see what I can do with 233 & 250 bus speeds to get around the 23 divider and get back. Right now I just want to get back to stable 22.5x200 (4500) F@H and work my up during the week.
  • csimoncsimon Acadiana Icrontian
    edited January 2013
    Starting over ...

    BIOS settings
    Current CPU Speed: 4000mhz
    CPU Ratio: 20
    CPU Bus: 200
    Mem Freq.: DDR3-1333mhz
    CPU/NB Freq.: 2200mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.3v
    CPU/NB Voltage: 1.175v
  • csimoncsimon Acadiana Icrontian
    edited January 2013
    Thrax said:

    That's a good, solid OC. How's the temperature?

    OK ...for now I'm folding & gaming Hawken and my temps just reached 39C high. Idle has been 15C. I think my NB temps were killing me one the high OC's but still not sure yet. Here are my current settings I'm testing below:

    BIOS settings
    Current CPU Speed: 4300mhz
    CPU Ratio: 21.5
    CPU Bus: 200
    Mem Freq.: DDR3-1333mhz
    CPU/NB Freq.: 2200mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.325v
    CPU/NB Voltage: 1.175v
  • shwaipshwaip bluffin' with my muffin Icrontian
    That sounds really low. What is your ambient temp? (15c =~ 60f)
  • ThraxThrax 🐌 Austin, TX Icrontian
    39C load is quite good, for any modern CPU.
  • csimoncsimon Acadiana Icrontian
    edited January 2013
    shwaip said:

    That sounds really low. What is your ambient temp? (15c =~ 60f)

    ambient is currently around 60f ...will be warmer when the heater kicks in for the night.
    I need to edit voltage ...I had to up it a little to get F@H stable. I'll let this frequency run throughout the night.

    Current CPU Voltage: 1.325V
    Load temp: 41c

    Edit:/ This crashed the client as well ...ran 1.35V all night last night and all day today. Will check stability when I get home.
  • csimoncsimon Acadiana Icrontian
    Moving right along -

    BIOS settings
    Current CPU Speed: 4400mhz
    CPU Ratio: 22
    CPU Bus: 200
    Mem Freq.: DDR3-1333mhz
    CPU/NB Freq.: 2200mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.375v
    CPU/NB Voltage: 1.175v

    1.35V locked up after about 10 mins.
  • csimoncsimon Acadiana Icrontian
    edited January 2013
    BIOS settings
    Current CPU Speed: 4500mhz
    CPU Ratio: 22.5
    CPU Bus: 200
    Mem Freq.: DDR3-1333mhz
    CPU/NB Freq.: 2200mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.425v
    CPU/NB Voltage: 1.175v

    Core temps reaching to 51C now. Don't know how high I can rely on this 24/7

    Edit/ had to bump up to 1.425V due to F@H crash ...at least I haven't been losing wu's.
  • csimoncsimon Acadiana Icrontian
    BIOS settings
    Current CPU Speed: 4500mhz
    CPU Ratio: 18
    CPU Bus: 250
    Mem Freq.: DDR3-2000mhz
    CPU/NB Freq.: 2500mhz
    HT Link Speed: 2500mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.4375v
    CPU/NB Voltage: 1.3v

    Temps became a concern at this point, not just for cpu but for nb. I placed a fan directed at the nb and this brought both cpu & nb temps down. NB temps went down as much as 12C load.

    Why can't I get my fsb to boot at 500?
  • ThraxThrax 🐌 Austin, TX Icrontian
    Might be hitting an FSB wall. Can you hit 500 at a super low multi?
  • csimoncsimon Acadiana Icrontian
    edited January 2013
    Thrax said:

    Might be hitting an FSB wall. Can you hit 500 at a super low multi?

    I only tried a 9 divider ...the higher fsb seems to give me less performance anyway.

  • csimoncsimon Acadiana Icrontian
    edited January 2013
    Full oad temps with F@H overnight got up to 52C and as low as 49C. Not bad at all for 8 cores folding @ 4.5ghz.
    Stressing the cpu/nb frequency at the moment to 2600mhz @ 1.325v. From the temps above it looks like I can afford some at 4.5ghz cpu clock.

    My current settings being tested:

    BIOS settings
    Current CPU Speed: 4500mhz
    CPU Ratio: 22.5
    CPU Bus: 200
    Mem Freq.: DDR3-2133mhz
    CPU/NB Freq.: 2600mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.4375v
    CPU/NB Voltage: 1.325v

    LinX: 3mins - 34c idle / 61c load
    wPime 32M: 8.082" - 36c idle / 40c load
    Cinebench: 7.70 - 35c idle / 50c load
    CPUID Mark: CPU:1389 / Mem:20360 - 36c idle / 47c load

    Edit:/ CPU/NB Freq.: 2600mhz just can't hang w/ OCCT Linpack. Also, ddr3-2400 doesn't last long once booted into windows, although it can pass memtest86+ all day long.
  • csimoncsimon Acadiana Icrontian
    BIOS settings
    Current CPU Speed: 4500mhz
    CPU Ratio: 22.5
    CPU Bus: 200
    Mem Freq.: DDR3-2133mhz
    CPU/NB Freq.: 2400mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.45v
    CPU/NB Voltage: 1.3v

    Looks like the 24/7 clock settings for me!
  • csimoncsimon Acadiana Icrontian
    edited February 2013
    Not much difference, just honing down on some tweaking.

    BIOS settings:
    Current CPU Speed: 4500mhz
    CPU Ratio: 22.5
    CPU Bus: 200
    Mem Freq.: DDR3-2133mhz
    CPU/NB Freq.: 2400mhz
    HT Link Speed: 2600mhz
    DRAM Timings: 9-11-10-28-1T
    CPU Voltage: 1.45625v
    CPU/NB Voltage: 1.3v

    Digi+ VRM settings:
    CPU LLC: Ultra High
    CPU/NB: High
    CPU Over-Current Protection: 130%
    CPU/NB Over-Current Protection: 110%

    I'm gradually getting temps down by lowering over-current protection.
  • csimoncsimon Acadiana Icrontian
    To allow myself a little headroom with CPU Bus, I've successfully applied the following:

    BIOS settings:
    Current CPU Speed: 4500mhz
    CPU Ratio: 18
    CPU Bus: 250
    Mem Freq.: DDR3-2000mhz
    CPU/NB Freq.: 2500mhz
    HT Link Speed: 3250mhz
    DRAM Timings: 8-10-9-25-1T
    CPU Voltage: 1.45625v
    CPU/NB Voltage: 1.3v

    What is a definitive benchmark to measure cpu and/or mem performance?
    It seems that everything I use gives inconsistent results, consistently.
    This what I've been using -

    wPrime 2.09
    Cinbench 11.5 64bit
    PC Wizard 2012 (cpu & mem)
    LinX 0.6.4
    OCCT 4.3.2

    All free or shareware to use.
  • ThraxThrax 🐌 Austin, TX Icrontian
    I don't think there really is any one definitive CPU benchmark, especially for an architecture of such variable performance as Vishera's.
  • csimoncsimon Acadiana Icrontian
    Thrax said:

    I don't think there really is any one definitive CPU benchmark, especially for an architecture of such variable performance as Vishera's.

    Thanks this is had in mind.

    I had to give yet another bump to get F@H stable:

    BIOS settings:
    Current CPU Speed: 4500mhz
    CPU Ratio: 18
    CPU Bus: 250
    Mem Freq.: DDR3-2000mhz
    CPU/NB Freq.: 2500mhz
    HT Link Speed: 3250mhz
    DRAM Timings: 8-10-9-25-1T
    CPU Voltage: 1.46875v
    CPU/NB Voltage: 1.3v
  • shwaipshwaip bluffin' with my muffin Icrontian
    Unless you're benching against other people's epeen, the best way to determine the optimal overclock is (and probably has been) to measure the performance in the apps you use and games you play.
  • csimoncsimon Acadiana Icrontian
    I guess I'm just looking for a quick and dirty way of telling whether my tweaks are fruitful or not.
  • shwaipshwaip bluffin' with my muffin Icrontian
    csimon said:

    I guess I'm just looking for a quick and dirty way of telling whether my tweaks are fruitful or not.

    you can always look for a benchmark that tests the same areas that the programs you use the most use
  • csimoncsimon Acadiana Icrontian
    I've been gradually cranking on the CPU bus with the following results (may still have a little more to go) -

    BIOS settings:
    Current CPU Speed: 4554mhz (4570 actual)
    CPU Ratio: 18
    CPU Bus: 253
    Mem Freq.: DDR3-2024mhz
    CPU/NB Freq.: 2530mhz
    HT Link Speed: 3289mhz
    DRAM Timings: 8-10-9-25-1T
    CPU Voltage: 1.475v
    CPU/NB Voltage: 1.3v

    3DMARK13:
    IS-120665
    CG-18252
    FS-3922
    wPrime 32M: 7.991sec
    Cinebench11.5: 7.88
    PCWizard 2012:
    CPU-1395
    Mem-197786
    MultiCorePrime: 16sec898ms

    Currently test F@H stability
  • csimoncsimon Acadiana Icrontian
    edited February 2013
    Anyone have any idea what acceptable 24/7 load temps might be? I'm willing to go high so long as I feel that this chip will last about 5 years. In reality, it will probably be exchanged for Steamroller (Kaveri) when the time arrives.

    Right now I'm pushing 4.58ghz @ 1.5v ...cpu load temp is 65C. I'm sure it will creep upwards in the Summer.
  • ThraxThrax 🐌 Austin, TX Icrontian
    You'll want to keep it at or under 65.
  • csimoncsimon Acadiana Icrontian
    That's what I thought. My core temps are reaching 65c and up to above 70c while testing 4580mhz ...it's simply not worth the gain. It looks like the sweet spot is at 4500 for my particular chip. That's satisfying for me to know.
  • csimoncsimon Acadiana Icrontian
    edited February 2013
    I've settled here since the returns show better in benchmarks. Idunno if it's because ddr3-2133 is more much strain on the controller or if the whole system just prefers the higher bus frequency, or tighter timings, etc.. The ram timings are for ddr3-1866, but they held for ddr3-2000 which was a surprise so they are proportionately tight. Thrax do you have insight???
    F@h load temps are typically 60-61c in core temp. Dusting might bring these temps down for summer folding 24/7.

    BIOS settings:
    Current CPU Speed: 4500mhz
    CPU Ratio: 18
    CPU Bus: 250
    Mem Freq.: DDR3-2000mhz
    CPU/NB Freq.: 2500mhz
    HT Link Speed: 2750mhz
    DRAM Timings: 8-10-9-27-1T
    CPU Voltage: 1.4625v
    CPU/NB Voltage: 1.3v
  • ThraxThrax 🐌 Austin, TX Icrontian
    Generally speaking, raw bandwidth is the most important on any modern platform, but with a clockspeed delta of just 133MHz, there are scenarios where the slower clock at tighter timings might have better bandwidth than the higher clock at looser timings.
  • csimoncsimon Acadiana Icrontian
    edited February 2013
    For real?
    http://www.youtube.com/watch?feature=player_embedded&v=eu8Sekdb-IE
    TushonCliff_Forster
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