post #11 of 11
The eVGA 680i A1 and T1 boards were redesigned to allow for quad core OCing. The LT version of the board does not have the redesign. I dont know if the XFX equivelant boards are the same, but I suspect they are.

Also note that the 680i board will not work with the 45nm quads.

Quote:
Originally Posted by ericeod View Post
Update: Feb 23, 2008
Thanks to Choggs396 for doing some fantastic research. His post gives some great info on the different versions of the 680i offerings. Most impotant is how they OC the Q6600 and Q6700 quad cores:
Quote:
Originally Posted by Choggs396 View Post
Someone was asking about the differences between the 680i LT SLI and the 680i SLI in another thread, so Ericoed thought I should post what I found on this thread for anyone that may need it.

The EVGA 680i LT SLI (122-CK-NF67-T1) is basically a cost reduced version of the standard 680i SLI (122-CK-NF68-A1 or T1). There are some differences in the MCP (southbridge) and other features, including the BIOS and memory capabilities.

This comparison provided by AnandTech of the 680i LT and 680i SLI illustrates some of the changes:


Other differences in the LT are less USB ports (8 opposed to 10) and only 1 Ethernet port (opposed to 2).

Ericeod has mentioned the 680i SLI AR and TR boards (opposed to A1 and T1) lack the proper GTL reference voltage modification, making them poor for Quad core overclocking. The LT boards also lacks this modification. Anandtech noticed this as well:


Overall, it's not a bad board, IMO. It has definitely been shown to OC 65nm dual cores with great success. But it's definitely not the one you'd want for OC'ing a Quad Core CPU. I'd go with either a 680i SLI A1 or T1 (model 122-CK-NF68-A1 or T1).

The 780i (EVGA model 132-CK-NF78-A1) makes an even better choice for Quads, IMO - because it has specific GTL Reference Voltage adjustments options in the BIOS for each lane - making a higher, more stable Quad core overclock possible. This post on xtreview.com illustrates how GTL reference voltage adjustments can impact overclocking, especially on Quads.

Edited by ericeod - 12/17/08 at 2:06pm
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
6850K ASUS X99-A eVGA GTX 1060 32Gb Team Vulcan DDR4 3000 Cas 15 
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OS: Crucial M500 Seagate HDD Samsung F3 H100i 
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