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X99 Xeon Overclock - Page 3

post #21 of 58
Quote:
Originally Posted by lutjens View Post

To the best of my knowledge, only the E5-1650 V3, E5-1660 V3 and E5-1680 V3 are unlocked. The lowest end SKUs in the stack aren't unlocked.
I asked one of the sellers of ES E5-16XX chips. He said that thay were all LOCKED.
post #22 of 58
Quote:
Originally Posted by JustinZanyo View Post

I asked one of the sellers of ES E5-16XX chips. He said that thay were all LOCKED.

16xx v1 are unlocked. V2 and V3 are locked.
post #23 of 58
I did see post about overclocking E5-1650 V2 to 5G.
http://valid.x86.fr/s4qjuc
post #24 of 58
Quote:
Originally Posted by iRUSH View Post

16xx v1 are unlocked. V2 and V3 are locked.
I did see post about overclocking E5-1650 V2 to 5G.
http://valid.x86.fr/s4qjuc
post #25 of 58
Quote:
Originally Posted by JustinZanyo View Post

I did see post about overclocking E5-1650 V2 to 5G.
http://valid.x86.fr/s4qjuc

Ha! So they really are hit or miss lol
post #26 of 58
I just got my rig with the Xeon E5 2637 V3 in it running a few weeks ago, I went in to start BCLK overclocking it with the FSB speeds and such but after I get past 105 Mhz on BCLK (the default is 100 Mhz) the default core speeds scale negatively? I'm not sure if this is just a BIOS calculation issue or an actual issue with overclocking the CPU but I'm not sure.

Also I found out that by default the highest speed DDR4 RAM that Xeon CPUs support is 2133 Mhz, because to go any higher than 2133 Mhz you have to increase the BCLK or have an unlocked Multiplier.

P.S. - For an explanation of what I mean by "negative scaling" is that when I increase the BCLK to 105 the BIOS says the CPU speed is increased to 3478 Mhz (or something like that) up from 3400 Mhz stock. But when I increase the BCLK past 105 to say 110 then the BIOS says the target CPU speed is like 2700 Mhz or something. Thus, the processor is going SLOWER by increasing the BCLK? headscratch.gif

- Insan1tyOne smile.gif
Edited by Insan1tyOne - 10/23/15 at 10:25am
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MiniNova
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post #27 of 58
My Xeon E5-2640v3 and Xeon E5-2680v3 are both locked.

Increasing BCLK from 100 MHz to 102 MHz worked only a few days with the former (not tested with the latter), and then stopped. Windows 10 has displayed "WHEA UNCORRECTABLE ERROR" (blue screen) right away when starting. Another time the mainboard issued a restart after switching the rig on and displayed "overclocking failed".

"Multicore Enhancement" seems to be ignored, too. Both CPUs have been manufactured mid'2015.

Update: My overclocking tests have been due to the mainboard clocking the CPU at BCLK 98 when set to BCLK 100. *grr!*
Edited by gongshi - 10/23/15 at 5:31pm
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post #28 of 58
Quote:
Originally Posted by gongshi View Post

My Xeon E5-2640v3 and Xeon E5-2680v3 are both locked.

Increasing BCLK from 100 MHz to 102 MHz worked only a few days with the former (not tested with the latter), and then stopped. Windows 10 has displayed "WHEA UNCORRECTABLE ERROR" (blue screen) right away when starting. Another time the mainboard issued a restart after switching the rig on and displayed "overclocking failed".

"Multicore Enhancement" seems to be ignored, too. Both CPUs have been manufactured mid'2015.

Update: My overclocking tests have been due to the mainboard clocking the CPU at BCLK 98 when set to BCLK 100. *grr!*

Hmm, so it seems that I'm not the only one seeing weird issues while trying to use BCLK to OC a V3 Xeon CPU?

- Insan1tyOne redface.gif
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Hard DriveHard DriveCoolingOS
Samsung 850 Evo M.2 250GB WD Caviar Black 2TB Corsair H100i GTX Windows 10 Education Edition 
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post #29 of 58
Quote:
Originally Posted by iRUSH View Post

Ha! So they really are hit or miss lol

No, they are not. The E5-1650 V2 and up from there are all unlocked. My E5-1680 V2 (octal core) is fully unlocked and is the only unlocked 8-core available for X79. V3s are also unlocked (E5-1650 V3 and up).

Trust me, I know what I'm talking about...I doubt anyone on the planet is more obsessed about unlocked Xeons than I am...wink.gif

I can't vouch for ES chips and whether or not they are unlocked (have no idea). The only ES I care about is an unlocked high core count (HCC) version if one ever became available (one has never been seen in the wild nor has proof of one in the wild been seen via CPU-Z screenshot).
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Beater
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CPUMotherboardGraphicsGraphics
Core i7-6950X ASUS Rampage 10 Edition  NVidia Titan X Pascal NVidia Titan X Pascal 
RAMHard DriveHard DriveHard Drive
8x16GB Corsair Dominator Platinum DDR4-2800MHz Intel P3700 2TB Samsung SM961 1TB 2x Samsung PM1725 SSD 6.4TB (11.6TB Windows Sof... 
CoolingOSPowerCase
Corsair H110 2x140mm AIO water cooler Windows 7 Ultimate Corsair AX1500i Corsair Vengeance C70 
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post #30 of 58
Quote:
Originally Posted by lutjens View Post

No, they are not. The E5-1650 V2 and up from there are all unlocked. My E5-1680 V2 (octal core) is fully unlocked and is the only unlocked 8-core available for X79. V3s are also unlocked (E5-1650 V3 and up).

Trust me, I know what I'm talking about...I doubt anyone on the planet is more obsessed about unlocked Xeons than I am...wink.gif

I can't vouch for ES chips and whether or not they are unlocked (have no idea). The only ES I care about is an unlocked high core count (HCC) version if one ever became available (one has never been seen in the wild nor has proof of one in the wild been seen via CPU-Z screenshot).

Is there a thread here that provides details on Xeon? Such as generations and their overclocking capabilities.
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