Overclock.net › Forums › Components › Memory › Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion
New Posts  All Forums:Forum Nav:

Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion - Page 102

post #1011 of 2032
Quote:
Originally Posted by ti20n View Post

The official spec for these chips is 1.5v + 5% max, i.e. 1.575v; incidentally, that is also the max Vdram officially supported by Intel (IvyB). So I'm personally quite comfortable with that voltage (but I also bumped vccsa/vccio by 5% to match, which from what I understand is important).
That said, many retail forms of these chips (e.g. GSkill Trident X) run them at 1.65v, although granted that's with heatspreaders. But someone suggested earlier: ~1.60v without active cooling on the RAMs, ~1.65v with a fan pointed at them, should be safe.

Oh, okay. I thought the max specified was 1.5v. That's nice to know! thumb.gif
Quote:
Originally Posted by ericeod View Post

When running 4 or more modules, make sure to increase the tRFC. I noticed on the G.Skill 2600 ram using these ICs, the tRFC is like 209! I run tRFC of 148 when running 16Gb. Anyways, to give you an idea what timings G.Skill programs their Samsung 30nm chips to run at 2600, check out this link (courtesy of Da1Nonly):
http://www.xbitlabs.com/articles/memory/display/ivy-bridge-ddr3_6.html

Yeah, I know that other manufacturers just re-brand them, and some run at higher volts. What sort of setting should I be putting my set on, and what exactly does it do? smile.gif
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
post #1012 of 2032
Thread Starter 
There is a post burried deep in this longggg thread that explains the secondary timings for this kit. When I get a chance, I pull the info up and post for you.
My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7 3930k ASUS P9X79 Deluxe ASUS 7970 DC2T 32Gb G.Skill Sniper 1866 Cas10 
Hard DriveHard DriveHard DriveHard Drive
OS: Mushkin Cronos DX SSD Intel X25-M SSD Seagate HHD Samsung F3 
Optical DriveCoolingOSMonitor
LG BluRay x12 Noctua NH-D14 Windows 8 Pro 64 ASUS VW226H 26" x3 Eyefinity 
KeyboardPowerCaseMouse
Logitech G19 Seasonic 1250w 80+ Gold Silverstone Fortress FT02 Logitech G9X 
Audio
ASUS Xonar DX 
  hide details  
Reply
My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7 3930k ASUS P9X79 Deluxe ASUS 7970 DC2T 32Gb G.Skill Sniper 1866 Cas10 
Hard DriveHard DriveHard DriveHard Drive
OS: Mushkin Cronos DX SSD Intel X25-M SSD Seagate HHD Samsung F3 
Optical DriveCoolingOSMonitor
LG BluRay x12 Noctua NH-D14 Windows 8 Pro 64 ASUS VW226H 26" x3 Eyefinity 
KeyboardPowerCaseMouse
Logitech G19 Seasonic 1250w 80+ Gold Silverstone Fortress FT02 Logitech G9X 
Audio
ASUS Xonar DX 
  hide details  
Reply
post #1013 of 2032
Quote:
Originally Posted by ericeod View Post

There is a post burried deep in this longggg thread that explains the secondary timings for this kit. When I get a chance, I pull the info up and post for you.

Thanks! I shall read aroud later on the Internet also and verify my findings here! smile.gif

+rep btw

EDIT: Aww no reps for you D:

EDIT2: This, is a really good guide. Although it's a tad outdated. I shall have to fiddle with some stuff tonight!

Also i didn't know that the tRAS was the CAS-tRCD-tRP combined. So technically when i can't boot at less than 24 it means that the timings on the overall ram should be 8 + 8 + 8 or something. At least i think that's what it means. It could just be outdated however.
Edited by Matt-Matt - 7/11/12 at 7:57pm
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
post #1014 of 2032
Thread Starter 
Here is the link thaty explains the timings, and espeically the secondary timings for these modules:
http://www.techpowerup.com/reviews/Samsung/MV-3V4G3/6.html
Quote:
There are two timings that are linked together that will help greatly in overclocking. When these two timings are not set correctly, overclocking will not be as successful, and long-term stability can be hard to attain without excessive voltage. The above picture shows the primary and secondary timings we used to reach 2400 MHz with 1.575 V.

The two crucial timings, of course, are CAS Latency, and Write CAS Latency.

For CAS 6 and 7, tWCL should be CAS -1 (so CAS 6 gets tWCL 5 and CAS 7 gets tWCL 6)

For CAS 8 and 9, tWCL should be CAS -2 (so CAS 8 gets tWCL 6 and CAS 9 gets tWCL 7)

For CAS 10 and 11, tWCL should be CAS -3 (so CAS 10 gets tWCL 7, and CAS 11 gets tWCL 8)

I mention this as tWCL is not a timing that is talked about very often, if at all. However, because it has proven itself as a critical timing during testing, it is something that I felt must mention.
My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7 3930k ASUS P9X79 Deluxe ASUS 7970 DC2T 32Gb G.Skill Sniper 1866 Cas10 
Hard DriveHard DriveHard DriveHard Drive
OS: Mushkin Cronos DX SSD Intel X25-M SSD Seagate HHD Samsung F3 
Optical DriveCoolingOSMonitor
LG BluRay x12 Noctua NH-D14 Windows 8 Pro 64 ASUS VW226H 26" x3 Eyefinity 
KeyboardPowerCaseMouse
Logitech G19 Seasonic 1250w 80+ Gold Silverstone Fortress FT02 Logitech G9X 
Audio
ASUS Xonar DX 
  hide details  
Reply
My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7 3930k ASUS P9X79 Deluxe ASUS 7970 DC2T 32Gb G.Skill Sniper 1866 Cas10 
Hard DriveHard DriveHard DriveHard Drive
OS: Mushkin Cronos DX SSD Intel X25-M SSD Seagate HHD Samsung F3 
Optical DriveCoolingOSMonitor
LG BluRay x12 Noctua NH-D14 Windows 8 Pro 64 ASUS VW226H 26" x3 Eyefinity 
KeyboardPowerCaseMouse
Logitech G19 Seasonic 1250w 80+ Gold Silverstone Fortress FT02 Logitech G9X 
Audio
ASUS Xonar DX 
  hide details  
Reply
post #1015 of 2032
I'll give this a try tonight when I get home from work...Sounds really interesting!
Thanks for sharing biggrin.gif
post #1016 of 2032
Quote:
Originally Posted by ericeod View Post

Here is the link thaty explains the timings, and espeically the secondary timings for these modules:
http://www.techpowerup.com/reviews/Samsung/MV-3V4G3/6.html
Quote:
There are two timings that are linked together that will help greatly in overclocking. When these two timings are not set correctly, overclocking will not be as successful, and long-term stability can be hard to attain without excessive voltage. The above picture shows the primary and secondary timings we used to reach 2400 MHz with 1.575 V.

The two crucial timings, of course, are CAS Latency, and Write CAS Latency.

For CAS 6 and 7, tWCL should be CAS -1 (so CAS 6 gets tWCL 5 and CAS 7 gets tWCL 6)

For CAS 8 and 9, tWCL should be CAS -2 (so CAS 8 gets tWCL 6 and CAS 9 gets tWCL 7)

For CAS 10 and 11, tWCL should be CAS -3 (so CAS 10 gets tWCL 7, and CAS 11 gets tWCL 8)

I mention this as tWCL is not a timing that is talked about very often, if at all. However, because it has proven itself as a critical timing during testing, it is something that I felt must mention.

This seems really useful.. But

450

No option for it in my bios! redface.gif
Looks like unless i can figure out what it is off either values or another commonly used name i'm stuck!
What is it set to by default? Or does anyone know of an alternate name of tWCL? smile.gif

EDIT: I also just tried tRW level and it did nothing tongue.gif

EDIT2: In the screenshot off TPU, what's the program called? smile.gif
Edited by Matt-Matt - 7/12/12 at 8:18pm
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
post #1017 of 2032
Don't take my word for it, but I believe tWL = tCWL = tWCL depending on the BIOS
post #1018 of 2032
Quote:
Originally Posted by ti20n View Post

Don't take my word for it, but I believe tWL = tCWL = tWCL depending on the BIOS

Awesome, I'll take a look right now seeing as 1T is playing up all of a sudden..
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
HAF Too
(27 items)
 
  
CPUMotherboardGraphicsRAM
Convertible i5 3570k (De-Lidded) Gigabyte Z77x-D3H XFX R9 290 With Koolance Block (1075/1250) G-Skill Ares 1866 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 64GB Seagate Barracuda 2TB Western Digital Green 2TB Samsung Spinpoint 1TB 
Hard DriveOptical DriveCoolingCooling
Western Digital Green 640GB 2x OEM DVD Drives Heatkiller Rev 3.0 XSPC RX360 
CoolingCoolingCoolingOS
Laing D5 + XSPC Res Primochill Bloodshed Red Tubing Koolance Fullcover R9 290x Block Windows 7 Ultimate x64 
MonitorMonitorMonitorKeyboard
Asus VEH228H Asus VE228H Aavara TS742 Dual Monitor Stand Ducky Shine II Cherry Blue RED Backlit Mechanic... 
PowerCaseMouseMouse Pad
Silverstone Strider 850W HAF 932 Logitech G400 Gigabyte Ghost 
AudioOther
Microlab Solo6c Logitech C100 Webcam 
  hide details  
Reply
post #1019 of 2032
Quote:
Originally Posted by ti20n View Post

Don't take my word for it, but I believe tWL = tCWL = tWCL depending on the BIOS

Write CAS latency (tCWL) and write latency (tWL) are related, but they are not the same timing.

tWL = tCWL + AL (additive latency)

Setting tWL to the figures mentioned in the techpower up article may result in instability. Additive latency is often 0, so this isn't always the case.

Personally, I can't get tWL of less than 8 to be stable regardless of what CAS latency I use at DDR3-1600+ on my Gulftown with two DIMMs per channel.
post #1020 of 2032
just ordered my 4 sticks of this! biggrin.gif


are there any guides to overclocking ram? I have never touched it before thumb.gif
Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700k asrock z77 extreme 3  GTX 680 SC+ Signature+ edition 16gb samsung ddr3 
Hard DriveCoolingOSKeyboard
256gb 830 Samsung SSD h100 push pull windows 7 ulti Ducky DK9008 Shine II White 
PowerCaseMouseMouse Pad
650w Corsair AX 810 Switch  razer deathader 2013 puretrak complexity edition 
  hide details  
Reply
Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 2700k asrock z77 extreme 3  GTX 680 SC+ Signature+ edition 16gb samsung ddr3 
Hard DriveCoolingOSKeyboard
256gb 830 Samsung SSD h100 push pull windows 7 ulti Ducky DK9008 Shine II White 
PowerCaseMouseMouse Pad
650w Corsair AX 810 Switch  razer deathader 2013 puretrak complexity edition 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion