Overclock.net › Forums › Components › Memory › Question about running a higher Uncore/NB Frequency
New Posts  All Forums:Forum Nav:

Question about running a higher Uncore/NB Frequency

post #1 of 7
Thread Starter 
Hey guys,

I have a question about my memory oc. I am using Super Talent 2000CL8's, and I'm trying to see how much I can get out of these @ 1600. Right now I have them stable at the following:



I still have to do a Prime test but they are stable at these settings thus far, I have tested using Linx and a 32m super pi run.

I noticed increasing my NB Frequency / UN Core I got a much lower latency and considerably higher Read/Write speeds on all fronts.

My question is, is running my uncore higher then x2 my ram speed a problem? On AUTO the Uncore is 3400Mhz (My ram is at 1600mhz).

Is running my Uncore at 3800Mhz Fine with 1600mhz or should I stick to 3200 ?

Thanks
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
post #2 of 7
I ran my uncore @ 4000mhz for the past few months with no problems. 3800Mhz will be fine for 24/7 and won't hurt anything.
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
post #3 of 7
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post
I ran my uncore @ 4000mhz for the past few months with no problems. 3800Mhz will be fine for 24/7 and won't hurt anything.
Good to know, thank you!
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
post #4 of 7
Running higher than 2x isn't a problem, and after you have found max CPU speed, you should then OC the uncore as far as you can with stability and without dangerous voltage.

Uncore is the speed of the L3 cache (which also connects all the cores together) and the IMC, so in some situations there is a significant performance benefit in raising it.

How high of an uncore you can get is luck of the draw, just like core OCing. Personally, I would not recommend using more than 1.4-1.45v uncore (QPI/VTT) long term. Few chips will be able to do more than 4GHz with that voltage, but most should do atleast 3.8GHz uncore.
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
post #5 of 7
Thread Starter 
Quote:
Originally Posted by Blameless View Post
Running higher than 2x isn't a problem, and after you have found max CPU speed, you should then OC the uncore as far as you can with stability and without dangerous voltage.

Uncore is the speed of the L3 cache (which also connects all the cores together) and the IMC, so in some situations there is a significant performance benefit in raising it.

How high of an uncore you can get is luck of the draw, just like core OCing. Personally, I would not recommend using more than 1.4-1.45v uncore (QPI/VTT) long term. Few chips will be able to do more than 4GHz with that voltage, but most should do atleast 3.8GHz uncore.
Indeed, as I found this to be the case. My CPU could absolutely not do 4000Mhz Uncore without a preposterous amount of QPI/VTT (were talking more then 1.45v here...much much more). This is the main reason I am running it at 1600 in the first place, and it is thus far stable with a nice 1.35 QPI/VTT.

Also, I didn't know it was the uncore the IMC had an issue with, I just thought the ram speed alone was too much stress on the IMC. Thanks for clearing that up! 3800MHz is stable thus far so that is good news.
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
post #6 of 7
Yeah, I had one 45nm i7 that could do 4GHz uncore, but it took ~1.5v to be stable, and that was out of my comfort zone for 24/7 use. None of my other chips would do better than 3.9GHz uncore without retarded levels of voltage (1.6v+) and my worst chip doesn't like anything more than 3.4-3.5GHz.

The only reason I have DDR3-2000 is because I now have a Gulftown (32nm) and they only need 1.5x the the DDR speed of the uncore in triple channel. On the downside, most Gulftowns crap out around 3.2-3.3GHz uncore (though having 50% more cache makes up for it, by and large).
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
post #7 of 7
Thread Starter 
Quote:
Originally Posted by Blameless View Post
Yeah, I had one 45nm i7 that could do 4GHz uncore, but it took ~1.5v to be stable, and that was out of my comfort zone for 24/7 use. None of my other chips would do better than 3.9GHz uncore without retarded levels of voltage (1.6v+) and my worst chip doesn't like anything more than 3.4-3.5GHz.

The only reason I have DDR3-2000 is because I now have a Gulftown (32nm) and they only need 1.5x the the DDR speed of the uncore in triple channel. On the downside, most Gulftowns crap out around 3.2-3.3GHz uncore (though having 50% more cache makes up for it, by and large).
Damn, that kind of really makes me want to upgrade to a Gulftown tbh. The IMC seems to be so much better, especially with a 1.5x requirement. 3000 Uncore would be plenty for 2000.....

Wish I could have gotten a better batch of 950, ah well...
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
Fresh
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 @ 4.0ghz 1.33v qpi/vtt @ 1.35v asus rampage iii extreme evga gtx 580 superclocked 1600 6-6-5-15-1T 
Hard DriveOSMonitorKeyboard
ocz vertex 2 ssd 60gb & 1tb wd caviar black win7 64bit ultimate acer 24" 1080p saitek eclipse 
PowerCaseMouseMouse Pad
enermax revolution85+ 1050w cm haf 932 deathadder qck+ 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › Question about running a higher Uncore/NB Frequency