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  1. #1
    ROG Member Array KING2882000 PC Specs
    KING2882000 PC Specs
    MotherboardRampage 4 Black Edition
    Processor4930k @4.6ghz
    Graphics Card #1Titan X 1500mhz
    Graphics Card #2Titan X 1500mhz
    MonitorAcer Predator x34
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    e5 2643 v3 realy more oc-able then other xeons?

    Hello

    I found on a few websites (like cpu boss) , that you can oc a 2643 v3 to 3.8-3.9 ghz on all cores.
    I know the multiplicator is locked, but maybe bclk oc is very effektive on this cpu.

    Do you know if that is right?

  2. #2
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
    MonitorASUS PG278Q
    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
    CaseObsidian 750D (original), 6xNH-A14
    Power SupplyZalman/FSP ZM1250 Platinum
    Headset Pilot P51 PTT *modded*
    OS Arch, Gentoo, Win7x64, Win10x64
    Network RouterActiontec T3200M VDSL2 Gateway
    Accessory #1 TP-Link AC1900 Archer T9E, 1xPCIe
    Accessory #2 ASUS/Infineon SLB9635 TPM (TT1.2/FW3.19)
    Accessory #3 ASUS OC Panel I (FW0501)
    Korth's Avatar
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    There's very little information about overclocking Xeons.

    I suspect the information on your websites was taken from very few E5-2643-3 parts, maybe a couple guys posting their RealBench results or whatever. (I couldn't find a lot about E5-2643-3 overclocking, but there are lots of hits about comparing E5-2643-2 vs i7-4960X overclocks.) Xeon procs aren't readily available through consumer channels, they cost far more than insanely overpriced i7-X enthusiast procs, and they aren't really designed to support overclocking - they can indeed be overclocked, but the people who buy them tend to be disinterested in gambling with the processor stability and reliability and longevity they've paid a premium price to attain.

    Overclocking capabilities depend greatly on the motherboard, and I couldn't find any motherboards specified. This is only a 6C/12T part, but I seriously doubt all six cores could overclock from 3.4GHz to 3.8GHz without exotic cooling - the vast majority of Intel processors have only 2 or maybe 3 strong cores which can sustain full Turbo (and overclock) speeds.

    You would probably do better with an i7-5930K anyhow, and you could buy three of them (with three chances at a mighty overclock) for the same price as one E5-2643-3.

  3. #3
    ROG Member Array KING2882000 PC Specs
    KING2882000 PC Specs
    MotherboardRampage 4 Black Edition
    Processor4930k @4.6ghz
    Graphics Card #1Titan X 1500mhz
    Graphics Card #2Titan X 1500mhz
    MonitorAcer Predator x34
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    I would get two of them for the price of a 5930k and would use it on a z10pe d16 ws. Cooled with water.
    Should i take them? One of them is as good as a 5930k in gaming and oc a 5930k doesnt realy boost the fps in the benchmarks i have seen.
    Last edited by KING2882000; 01-03-2016 at 08:38 AM.

  4. #4
    ROG Guru: Gold Belt Array Menthol PC Specs
    Menthol PC Specs
    MotherboardM 10 Apex / XI gene
    Processor8700K / 9900K
    Memory (part number)2x8 Gskill Trident Z 4266/2x2x8 Gskill Trident Z 4500
    Graphics Card #1RTX 2080ti / GTX 1060
    Sound CardSoundBlaster Ae5 / Onboard
    MonitorBENQ 32" 4K
    Storage #1Intel 900p 480GB/Samsung 960 Pro 1TB
    Storage #2Intel 750 1.2TB/Plextor 1 TB 2X 950 Pro
    CPU CoolerCorsair H150i AIO / H1110i
    CaseCorsair 740 ? Lian Li Air
    Power SupplyCorsair AX 1200i / AX 1200i
    Keyboard Corsair
    Mouse ASUS Strix
    Headset HyperX Cloud Alpha
    Mouse Pad ASUS
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    I have never built a dual CPU system myself, it would be unique for a home desktop, the fact that you can get 2 chips for a low price may make it sound like a good deal and 12 cores sounds exciting but I don't think it would make the best gamer system, it would be kind of fun to build and bench but unless you have the need for a server you are asking for trouble, if you need a server you can game on I would love to hear about the build. You need double the memory and the memory is EEC server memory not normal desktop memory, no M.2 slot, etc.
    Just the fact that your here asking if you should buy them is a good indicator that you probably shouldn't, if you do buy them and build this system we would love to have you post a build log

  5. #5
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
    MonitorASUS PG278Q
    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
    CaseObsidian 750D (original), 6xNH-A14
    Power SupplyZalman/FSP ZM1250 Platinum
    Headset Pilot P51 PTT *modded*
    OS Arch, Gentoo, Win7x64, Win10x64
    Network RouterActiontec T3200M VDSL2 Gateway
    Accessory #1 TP-Link AC1900 Archer T9E, 1xPCIe
    Accessory #2 ASUS/Infineon SLB9635 TPM (TT1.2/FW3.19)
    Accessory #3 ASUS OC Panel I (FW0501)
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    You won't find many 2S-capable motherboards (with a C61x-based chipset) which support hard overclocking. At least none which offer a non-Intel LGA2011-3 OC Socket and a BIOS with piles of settings to fine tweak maximal overclocks. I imagine that achieving stable OC on a multiprocessor system would be a real challenge.

  6. #6
    ROG Member Array KING2882000 PC Specs
    KING2882000 PC Specs
    MotherboardRampage 4 Black Edition
    Processor4930k @4.6ghz
    Graphics Card #1Titan X 1500mhz
    Graphics Card #2Titan X 1500mhz
    MonitorAcer Predator x34
    CaseSelf-build Case in my Desk

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    Its going to be a z10 pe d16 ws

  7. #7
    ROG Guru: Brown Belt Array Vlada011 PC Specs
    Vlada011 PC Specs
    MotherboardRampage V E10 (BIOS 1903)
    ProcessorIntel®i7-5820K (4.5GHz 1.325V)
    Memory (part number)CMD16GX4M4A2666C15
    Graphics Card #1ASUS GTX1080Ti Poseidon
    Sound CardSound Blaster ZxR
    MonitorSamsung P2450H
    Storage #1Samsung 970 EVO PLUS 1TB
    Storage #2Samsung 850 EVO 1TB/WD Black 2TB
    CPU CoolerEK RGB Monoblock RVE10
    CaseLian Li PC-O11 WXC
    Power SupplyEVGA 1200 P2
    Keyboard Deck 87 Francium PRO - MX Brown DS PBT
    Mouse Logitech G900
    Mouse Pad Steeseries QCK
    Headset/Speakers CREATIVE T5900 5.1
    OS Windows 10 Pro x64 v1903
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    I could buy E5-2670 V3 ES for 450 euro before few weeks, 24 threads, 30MB Cache.
    I still have picture somewhere I couldn't believe what I saw. Pardon I could buy for 500e because when I saw he was reserved for 450e.
    and before him guy sold with 14 cores same ES for around 600 euro. I saw that in positive comments from customers who buy from him. Imagine that 28 threads for price of i7-5930K...
    I know that ES is not nicest solution, but if motherboard accept him and guy write clearly that work on same boards as i7-5820K and i7-5930K than performance are absolutely same.
    And in our country is rule if something no warranty than seller usually give 7 days warranty for buyers to test is it compatible, etc.
    Because of that X99 is excellent, I will find similar offers in next 2 years several time.


  8. #8
    ROG Guru: Yellow Belt Array Legolas PC Specs
    Legolas PC Specs
    MotherboardMaximus X Hero Wifi AC
    ProcessorIntel Core i7 8600k oc 5Ghz
    Memory (part number)Samsung DDR4 16GB
    Graphics Card #1ASUS NVIDIA GTX 1080
    MonitorASUS MS246
    Storage #1Samsung MZVPV256
    Storage #2Samsung MZVPV256
    CPU CoolerCorsair H110I v2
    Power SupplyPC 1200W Turbo-Cool 1200
    Keyboard ASUS SK2045

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    Xeon processors are usually locked multiplier for 24/7 data-center stability. I overclock BCLK to 104.1 but posting issues even with high core 1.4V with 104.2 and higher.
    The Xeon only way to overclock is BCLK with higher voltage (not Vcore, but another voltage). I have not find the right voltage tweak yet. I am still tweaking.

  9. #9
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
    MonitorASUS PG278Q
    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
    CaseObsidian 750D (original), 6xNH-A14
    Power SupplyZalman/FSP ZM1250 Platinum
    Headset Pilot P51 PTT *modded*
    OS Arch, Gentoo, Win7x64, Win10x64
    Network RouterActiontec T3200M VDSL2 Gateway
    Accessory #1 TP-Link AC1900 Archer T9E, 1xPCIe
    Accessory #2 ASUS/Infineon SLB9635 TPM (TT1.2/FW3.19)
    Accessory #3 ASUS OC Panel I (FW0501)
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    My E5-1680-3 doesn't seem to have any locked clocks, frequencies, multipliers, or voltages. Or perhaps my Asus ROG X99 R5E mobo (with Asus OC Socket) completely ignores/overrides any Intel lockouts coded into the Xeon part. I was unable to overclock it, completely unable to change any frequencies or multipliers or voltages - all relevant BIOS settings were greyed out on "Auto" - when it briefly ran on a Gigabyte GA-X99-SOC Force 1.0 mobo last year.

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