NVIDIA nForce 590 SLI Technology Chipset Overclocking
DU-02451-001_v01
25
05/17/06
PCI Express Overclocking
The NVIDIA nForce 590 SLI technology chipset is highly overclockable by design.
One of the main features it supports is NVIDIA LinkBoost
™
technology.
LinkBoost technology is only supported on this chipset and high-end NVIDIA
GeForce products such as the GeForce 7900GTX. LinkBoost technology increases
the PCI Express and HyperTransport link between NVIDIA nForce 590 MCP and
SPP chips by 25% out of the box. PCI Express, however, is far more overclockable
that 25%.
Use the following procedure to overclock the PCI Express interface:
1.
Load system configuration defaults in BIOS using Load Defaults option.
2.
Go to the
System Voltages
BIOS menu to change the following voltages so
they have exactly the same values as shown in Figure 5:
¾
HT nForce SPP <-> MCP
¾
nForce SPP
¾
nForce MCP
3.
Use the NVIDIA nTune 5.0 to dynamically change and test each x16 PCI
Express link within the Windows environment.
This will overclock PCI Express on the NVIDIA nForce 590 SLI chipset.
The NVIDIA nForce 590 SLI chipset can sustain PCI Express overclocking
more than 50% nominal. Figure 16 shows how to overclock each of the x16
PCI Express links.
Overclock PCI Express in increments, then test using Stability Test or
another system stress application to ensure proper system functionality after
each increment. Even though the NVIDIA nForce 590 SLI SPP PCI
Express interface might overclock more than its MCP counter part, there is
no performance impact if the two x16 PCI Express interfaces are not
balanced.
