S775 Vcore adjustment through VID Pad Mods
Oct 4, 2018 14:00:56 GMT -5
Mr.Scott, Macsbeach98, and 1 more like this
Post by Aleslammer on Oct 4, 2018 14:00:56 GMT -5
Generally for S775 MBs it's really not needed but for boards without voltage adjustment it's a little easier than a hard volt mod and a dab of alcohol on a rag it's gone.
Intel controls what the board uses for voltage through the VID Pads by controlling what the VID Pad says you can control the Vcore. From images 2 & 3 a 1 can be turned into an 0 by connecting a VID Pad to a nearby VSS Pad with a trace pin, an 0 to 1 by blocking contact with the socket pin below it.
Max VID is 1.60v from the two charts below which would probably net around 1.57v at board level, so make sure your cooling can handle what you set.
The first thing to do is to find the VID for your CPU to determine the state of VID pads 1-6, see images two and three below.
CPUz is probably the easiest for most. When you open CPUz Core Voltage will be shown to change this to VID open the Validate window and check the eXtreme OC Mode box and close CPUz, reopen ,CPUz now shows Core VID, its rounded to 3 places but close enough. (Using Version 1.86)
Checked CPUz VID information with:
Core Temp 1.0 RC6, no longer available on site 1.0 RC8 being the oldest available
Everest Ultimate Edition v5.50.2100 / Computer /Overclock / CPU Properties (Don't know about availability)
Looking through Real Temp changes, Version 2.5 looks promising and Version 2.7 complicates things a bit.
Tools needed, Conductive fluid/ink pen and tape, rubber cement or the sticky ends from the 771 to 775 adapters for me a good magnifier, never blocked a pad so don't know what would work best.
Most of this information was created or gathered the first time I used a VID mod and to help better understand how it works created a work sheet so I wouldn’t have to spend the time looking up the same information and verifying data the next time I needed it, the older I get the sooner I forget. First image below created for the X6800 with some VID settings I might want to use with a 4CoreDual-SATA2.
Notes
1 - The first image below shows the upper left hand corner of the CPU with the pads facing towards the viewer, as you would get ready to do the mod, the gold triangle on the CPU would be in the lower LEFT hand corner. The Intel Data Sheets show pad assignments looking down through the heat sink.
2 - Pad assignments are consistent with the listed processors.
3 – Green processors do not use VID 0&7, Yellow do, (sort of). (Earlier 775 CPUs before those listed in the first image below that I’ve checked use VIDs 0-5 & pad assignments differ slightly). Correction to my original information the Pentium Dual Core E5xxx & 6xxx also use VID 0&7 as shown in image 3 below.
4 – Have not checked if the 1&0 sequencing for each VID setting is the same for each processor family, so use the VID chart for your particular CPU.
Image 1
Core 2 Duo E6xxx & X6xxx VID Chart (Image 2)
Pentium Dual-Core E5xxx & E6xxx VID Chart (Image 3)
Created most of this at work should of done it while it was sitting in front of me, it is now, sometimes RIGHT is wrong.
Intel controls what the board uses for voltage through the VID Pads by controlling what the VID Pad says you can control the Vcore. From images 2 & 3 a 1 can be turned into an 0 by connecting a VID Pad to a nearby VSS Pad with a trace pin, an 0 to 1 by blocking contact with the socket pin below it.
Max VID is 1.60v from the two charts below which would probably net around 1.57v at board level, so make sure your cooling can handle what you set.
The first thing to do is to find the VID for your CPU to determine the state of VID pads 1-6, see images two and three below.
CPUz is probably the easiest for most. When you open CPUz Core Voltage will be shown to change this to VID open the Validate window and check the eXtreme OC Mode box and close CPUz, reopen ,CPUz now shows Core VID, its rounded to 3 places but close enough. (Using Version 1.86)
Checked CPUz VID information with:
Core Temp 1.0 RC6, no longer available on site 1.0 RC8 being the oldest available
Everest Ultimate Edition v5.50.2100 / Computer /Overclock / CPU Properties (Don't know about availability)
Looking through Real Temp changes, Version 2.5 looks promising and Version 2.7 complicates things a bit.
Tools needed, Conductive fluid/ink pen and tape, rubber cement or the sticky ends from the 771 to 775 adapters for me a good magnifier, never blocked a pad so don't know what would work best.
Most of this information was created or gathered the first time I used a VID mod and to help better understand how it works created a work sheet so I wouldn’t have to spend the time looking up the same information and verifying data the next time I needed it, the older I get the sooner I forget. First image below created for the X6800 with some VID settings I might want to use with a 4CoreDual-SATA2.
Notes
1 - The first image below shows the upper left hand corner of the CPU with the pads facing towards the viewer, as you would get ready to do the mod, the gold triangle on the CPU would be in the lower LEFT hand corner. The Intel Data Sheets show pad assignments looking down through the heat sink.
2 - Pad assignments are consistent with the listed processors.
3 – Green processors do not use VID 0&7, Yellow do, (sort of). (Earlier 775 CPUs before those listed in the first image below that I’ve checked use VIDs 0-5 & pad assignments differ slightly). Correction to my original information the Pentium Dual Core E5xxx & 6xxx also use VID 0&7 as shown in image 3 below.
4 – Have not checked if the 1&0 sequencing for each VID setting is the same for each processor family, so use the VID chart for your particular CPU.
Image 1
Core 2 Duo E6xxx & X6xxx VID Chart (Image 2)
Pentium Dual-Core E5xxx & E6xxx VID Chart (Image 3)
Created most of this at work should of done it while it was sitting in front of me, it is now, sometimes RIGHT is wrong.
